How much pterostilbene should I take a day?

Reviewed and updated: 13 September 2026

How Much Pterostilbene Should I Take a Day? The Honest Answer

How much pterostilbene should I take a day is a question I get asked more often than almost anything else about our NMN formula, and the honest answer is that most people take somewhere between 50 mg and 250 mg a day, with the upper end of that range being the highest amount ever formally tested for safety in a published human trial. Below about 50 mg you are into amounts that no study has looked at. Above 250 mg a day you are past the point where anyone has checked properly, and there is a specific reason to be careful up there that most dosage guides skip entirely.

That is the short version. The longer version is more interesting, because pterostilbene is one of those ingredients where the right amount genuinely depends on what else is in the capsule with it, and where the chemistry explains the dose far better than the marketing does.

The Quick Version

• What it is: a stilbene compound found naturally in blueberries and in the heartwood of the Indian kino tree, chemically almost identical to resveratrol but with two methyl groups swapped in.
• The tested range: a published human safety trial used 100 mg a day and 250 mg a day for six to eight weeks and concluded that pterostilbene is generally safe for use in humans up to 250 mg a day.
• What most UK products supply: usually 50 mg to 100 mg per serving, either on its own or sitting inside a wider polyphenol formula.
• Take it with food. Pterostilbene is fat soluble, and in animal work fasting cut its absorption dramatically. A meal is not optional if you want the label dose to mean anything.
• One honest caution: in the same group of trial participants, the higher pterostilbene dose taken on its own was associated with a rise in LDL cholesterol. That rise did not appear when pterostilbene was paired with a grape extract. It is the single most important thing to know before you reach for a high-dose standalone capsule.

What Pterostilbene Actually Is, and Where It Comes From

Before we talk about milligrams, it helps to know what you are actually measuring.

Pterostilbene is a stilbene, which is a small family of plant compounds that plants make when they are stressed, damaged or under attack from fungi. It takes its name from Pterocarpus marsupium, the Indian kino tree, whose heartwood has been used in traditional Ayurvedic practice for a very long time, and which turned out to contain unusually high amounts of it. It also occurs in grapes, in almonds, and most famously in blueberries.

The blueberry connection is the one everyone repeats, and it is true, but it is worth putting a number on it. Researchers at the United States Department of Agriculture measured stilbene content across ten Vaccinium species and found pterostilbene in rabbiteye blueberry and deerberry at levels of roughly 99 to 520 nanograms per gram of dried sample (Rimando and colleagues, Journal of Agricultural and Food Chemistry, 2004).

Why you cannot eat your way to a supplement dose

Run that arithmetic and it becomes quite funny. A nanogram is a billionth of a gram. At the top end of that measured range, 520 nanograms per gram of dried berry, you would need to eat something in the order of a hundred kilograms of dried blueberries to reach even 50 mg of pterostilbene. Fresh blueberries are mostly water, so the fresh-weight figure is far higher again.

I mention this not to talk you out of blueberries, which are a lovely thing to eat and bring plenty else with them, but because it settles an argument people have with themselves. If you are interested in pterostilbene at the amounts that have actually been studied, food is not the route. That is simply a matter of arithmetic, not of anyone selling you anything.

The Chemistry Behind the Dose: Why Two Methyl Groups Change Everything

Here is the bit that actually explains why a sensible pterostilbene dose is smaller than a sensible resveratrol dose.

Resveratrol and pterostilbene are near twins. Both are built on the same stilbene backbone, two aromatic rings joined by a short double-bonded bridge. The difference is what is hanging off one of those rings. Resveratrol carries three hydroxyl groups, which is to say three oxygen-and-hydrogen pairs. Pterostilbene has two of those three replaced with methoxy groups, an oxygen with a methyl group attached. Chemists call it the dimethylether analogue of resveratrol, which is a mouthful, but all it means is that two hydroxyls have been capped with little methyl caps.

Two consequences follow, and both of them matter for dosing.

The first is fat solubility. Hydroxyl groups like water. Methoxy groups do not. Swapping two of them makes the molecule considerably more lipophilic, which is to say more willing to dissolve in fat and more willing to cross the fatty membranes that line your gut and wrap your cells. That is why the take-with-food advice further down this page is not a throwaway line.

The second is metabolic durability, and this is the real story. Your body deals with polyphenols by attaching things to their hydroxyl groups, mostly glucuronic acid and sulfate, which makes them water soluble and easy to excrete. It is a tidy system and it is very fast. Resveratrol has three hydroxyls available for that process, and gets conjugated so quickly that most of an oral dose is dealt with before it reaches the general circulation. Pterostilbene has one hydroxyl left exposed. There is simply less for the machinery to grab.

Absorption: Why Pterostilbene Needs Less on the Label

That chemistry shows up clearly in the pharmacokinetic work.

The most-quoted comparison comes from a study at the United States National Cancer Institute, in which rats were given resveratrol and pterostilbene orally at equivalent molar doses for fourteen consecutive days, with plasma levels of the parent compounds and their metabolites measured by mass spectrometry. Resveratrol came out at roughly 20 per cent orally bioavailable. Pterostilbene came out at roughly 80 per cent (Kapetanovic and colleagues, Cancer Chemotherapy and Pharmacology, 2011).

Be careful how you read that, because a lot of supplement copy is not. It is a rat study, not a human one, and no human pharmacokinetic study of pterostilbene at supplement doses has been published. What it tells you is directional and mechanistic rather than a precise human multiplier. But the direction is consistent across the literature, and a separate review of the pharmacokinetics concluded the same thing: the higher in vivo bioavailability of pterostilbene relative to resveratrol is the compound's fundamental practical advantage.

The dosing implication is straightforward. If more of what you swallow survives the trip, you need less of it on the label to reach a comparable exposure. That is why a thoughtfully built formula will not simply match pterostilbene milligram for milligram against resveratrol, and why a product boasting a very large pterostilbene number is not automatically the better buy. In this case the bigger number may just mean the formulator was not paying attention to the chemistry.

What the Human Trial Actually Tested, and At What Dose

This is where most dosage guides get vague, so let us be precise, because there is really only one trial that anchors the whole question.

A team led by Daniel Riche at the University of Mississippi ran a prospective, randomised, double-blind, placebo-controlled trial specifically designed to look at the safety of longer-term pterostilbene in people. Eighty participants were enrolled, all of whom had raised cholesterol at baseline, and they were divided evenly into four arms for six to eight weeks (Riche and colleagues, Journal of Toxicology, 2013).

The four arms were these. Pterostilbene at 125 mg twice daily, which is 250 mg a day. Pterostilbene at 50 mg twice daily, which is 100 mg a day. Pterostilbene at 50 mg twice daily together with 100 mg of grape extract twice daily. And a matching placebo twice daily.

Just over 91 per cent of participants completed. The average age was 54. The researchers tracked liver markers, kidney markers and glucose markers, alongside self-reported symptoms. They found no adverse drug reactions on any of the biochemical measures, and no statistically significant self-reported problems. Their conclusion, in their own words, was that pterostilbene is generally safe for use in humans up to 250 mg a day.

That sentence is doing an enormous amount of work across the internet, so it is worth being clear about what it does and does not establish. It establishes a tested safety ceiling for six to eight weeks in eighty adults. It does not establish an optimal dose, because the trial was not designed to find one. It does not tell you anything about twelve months of use, or about people much younger or much older than the participants. And the participants were not a general healthy population; they were selected for raised cholesterol, which turns out to matter a great deal for the next section.

The Finding Most Dosage Guides Leave Out

The same eighty participants were also reported on in a second paper, this one looking at what happened to their metabolic measurements rather than just their safety bloods. I think it is the most useful thing ever published about how to dose this compound, and it is oddly hard to find in consumer write-ups.

Here is what the researchers measured (Riche and colleagues, Evidence-Based Complementary and Alternative Medicine, 2014).

LDL cholesterol rose in the pterostilbene-only arms, by an average of 17.1 mg/dL, and that result was statistically robust. It did not happen in the arm where pterostilbene was combined with grape extract. The presence of an existing cholesterol medicine appeared to blunt the effect. Blood pressure readings came down at the higher dose, by roughly 7.8 mmHg systolic and 7.3 mmHg diastolic. Participants who were not taking a cholesterol medicine showed a small reduction in body mass index.

None of that is a benefit I am claiming for anything we sell, and I want to be plain about that. It is a description of what one trial in eighty people with raised cholesterol recorded, in a study the researchers themselves describe as needing follow-up. But it is genuinely useful when you are deciding on a daily amount, for two reasons.

First, it means high-dose standalone pterostilbene is not a free lunch. If you have raised cholesterol, or a family history, or you are already having your lipids monitored, taking 250 mg a day of pterostilbene entirely on its own is a conversation to have with your GP before you start rather than after. That is a genuinely different message from the one the supplement category usually gives out.

Second, and more interestingly, the effect disappeared when pterostilbene was not flying solo. The combination arm used half the dose alongside another polyphenol source, and the LDL signal was not there. One trial is one trial, and I would not want to build a theory on it. But it does line up with something formulators have believed for a while, which is that polyphenols behave differently in company than they do in isolation.

How UK Products Are Actually Dosed

Walk through what is on sale in the UK and you will find pterostilbene showing up in three broadly different shapes.

Standalone capsules. Usually 50 mg or 100 mg per capsule, occasionally 150 mg. These sit at or below the tested range and are the format most likely to invite you to take two or three a day, which is how people quietly end up at or above 250 mg without ever deciding to.

Stilbene pairings. Pterostilbene alongside trans-resveratrol, typically with the resveratrol number larger. This is the shape the trial data arguably supports best, given what the combination arm showed.

Wider NAD-focused formulas. Pterostilbene as one component among several, usually alongside an NAD precursor such as NMN or nicotinamide riboside, often with quercetin, TMG and CoQ10. Here the pterostilbene number is usually modest, somewhere in the 25 mg to 60 mg range, because it is not the headline ingredient and is not meant to be.

It is worth knowing that pterostilbene sold in the UK carries no authorised health claim of its own, so anything a label tells you about what it does for you should be read with that in mind. What a label can and should tell you is exactly how much is in there, in what form, and per what serving. That is the information that actually helps you.

Synthesised or Extracted? What the Source Tells You About the Dose

Here is a question almost nobody asks and everybody should, because it changes what a milligram on the label is actually worth.

Pterostilbene on the supplement market comes from two routes. It can be extracted from plant material, usually Pterocarpus marsupium heartwood, or it can be chemically synthesised. Both end up at the same molecule. The difference is in what comes along with it and in how consistent the result is batch to batch.

Plant extraction has a romance to it, and for some ingredients it genuinely matters, because the whole extract carries a family of related compounds that the isolate does not. For pterostilbene specifically, the picture is less compelling. Yields from heartwood are low, which pushes the price up, and extract-derived material is where variability and adulteration concerns tend to cluster. Synthesised pterostilbene of pharmaceutical-grade purity is chemically identical, tends to be more consistent, and is what most of the credible research material has been.

Why this bears on dose: if a label declares 100 mg of a plant extract standardised to, say, 90 per cent pterostilbene, you are getting 90 mg of the compound, not 100. If it declares 100 mg of 98 per cent pure pterostilbene, you are getting 98. Over a month those gaps are real. A label that names neither the source nor the purity has told you the least useful version of the number, and my instinct in that situation is to assume the least flattering interpretation, because a manufacturer proud of the figure usually prints it.

Tolerability: What People Actually Report

The published safety trial is reassuring on the measurements that matter most. No adverse reactions showed up on liver markers, kidney markers or glucose markers across six to eight weeks, and there were no statistically significant self-reported problems in any arm.

That is a stronger result than it might sound, because those three panels are precisely where supplement problems usually surface first. Better than nine in ten participants completed the trial, which is a decent completion rate and tells you the capsules were not unpleasant to take.

Outside that trial, the reports that do come up are the ordinary ones you would expect from any fat-soluble compound taken on an empty stomach: mild digestive unsettlement, occasionally a slightly queasy feeling in the first hour. Both of those usually resolve by doing the thing this article keeps recommending, which is taking it with a proper meal rather than alone with a coffee. If you are one of the people who finds polyphenols generally sit heavily, starting at the lower end of the range and moving up after a fortnight is a sensible way in.

What I would take as a reason to stop and ask for advice, rather than to push through, is anything persistent: ongoing digestive upset beyond the first week or two, unusual bruising, or any new symptom you would not have expected. None of those are common, and none of them appeared in the trial, but a supplement is not worth tolerating discomfort over.

Does the Dose Change If You Take It Alongside NMN?

This is the most common real-world version of the question, because very few people in the UK are taking pterostilbene entirely on its own. It usually arrives inside an NAD-focused routine.

The honest answer is that the dose does not need to go up, and there is a reasonable argument it should sit lower.

Two points. First, the largest study of pterostilbene alongside an NAD precursor gave it in combination rather than at a high standalone dose. In a randomised, double-blind, placebo-controlled trial of 120 healthy adults aged 60 to 80, participants took nicotinamide riboside combined with pterostilbene daily for eight weeks, at a recommended dose and at double that dose. The researchers measured whole-blood NAD and found it rose in a dose-dependent way, by roughly 40 per cent in the standard-dose group and roughly 90 per cent in the double-dose group, against placebo and baseline, and sustained across the eight weeks, with no serious adverse events reported (Dellinger and colleagues, npj Aging and Mechanisms of Disease, 2017). I am describing what that trial measured, not promising it for anything you buy from us, and the pterostilbene in those combinations sat in the tens of milligrams rather than the hundreds.

Second, and more practically, if you are already taking several polyphenols together, the sensible instinct is restraint on each rather than maximalism on all of them. A routine carrying quercetin, trans-resveratrol and pterostilbene at once does not need every one of them pushed to its individually tested ceiling. Our own formula reflects that: 125 mg of quercetin, 100 mg of trans-resveratrol, 50 mg of pterostilbene, each chosen in relation to the others rather than in isolation.

Why Our Own Formula Uses 50 mg and Not 250 mg

Since I have just spent several hundred words on dose logic, it would be odd not to apply it to our own product and show my working.

NMN Fusion Pro contains 50 mg of pterostilbene per two-capsule serving, sitting alongside 100 mg of trans-resveratrol, 500 mg of NMN, 500 mg of TMG, 125 mg of quercetin, 100 mg of CoQ10 and 5 mg of piperine. Every one of those numbers is printed separately on the pouch rather than hidden inside a blend.

Three reasons for the 50 mg.

The first is the absorption data. If pterostilbene survives the first pass far better than resveratrol does, then matching them milligram for milligram would be putting in more than the chemistry calls for. The 50 mg against 100 mg of trans-resveratrol reflects the difference in how the two behave once swallowed, not a decision to be stingy.

The second is the trial data I walked through above. The arm that showed no LDL signal was the lower-dose combination arm, not the 250 mg standalone arm. A formula designed to be taken every day for months, rather than for six to eight weeks under supervision, belongs at the conservative end of a tested range.

The third is simply that pterostilbene is not the headline here. NMN is. Pterostilbene is in the formula to broaden the polyphenol profile rather than to be the star, and a 250 mg dose of a supporting ingredient would tell you the formula had been built to impress on a label rather than to be taken daily.

If you want the fuller comparison between the two stilbenes and which one suits which reader, we have written that up separately in resveratrol versus pterostilbene.

How to Read a Pterostilbene Label: A UK Buyer's Dose Checklist

This is the part none of the pages currently ranking for this question bother to give you, so here it is properly. Six things to check, in order, before you decide what your daily amount actually is.

1. Find the per-serving number, not the per-capsule number. These are different, and the gap between them is where most accidental double-dosing happens. A pouch declaring 100 mg per serving with a two-capsule serving size is a 50 mg capsule. If you take four capsules because a forum told you to, you are at 200 mg and you did not knowingly choose that.

2. Check that it says trans-pterostilbene, or at least that the form is stated. Stilbenes exist as trans and cis isomers, and the trans form is the stable, well-characterised one that the research uses. Labels that just say pterostilbene have not told you which you are getting.

3. Look for a purity percentage. Quality pterostilbene is typically supplied at 98 per cent or higher purity. If a product is standardised to a lower percentage, the number on the front is not the number reaching you, and you should be doing the arithmetic yourself.

4. Add up every source in your cupboard. This is the one people miss. If you take a standalone pterostilbene capsule and an NAD-focused blend and a resveratrol complex, the pterostilbene in all three adds together. The 250 mg tested ceiling is a daily total, not a per-product allowance.

5. Work out the cost per day, not the cost per bottle. Divide the price by the number of servings, not the number of capsules. Pterostilbene is one of the more expensive polyphenols to produce, and a suspiciously cheap high-dose product deserves a hard look at its purity documentation.

6. Ask what testing has been done. Every Pure Vitamins product is formulated in the UK and made in a facility certified to ISO 22000:2018, HACCP and GMP, and is tested for purity and heavy metals, with certificates of analysis available on request. Whoever you buy from, that question should have a clear answer. If you would like the wider version of this skill, we have a guide on how to read supplement labels.

When to Take It, and Whether Food Matters

Food matters more than the hour of the day, and it is not close.

A pharmacokinetic study in rats looked directly at what changes pterostilbene absorption, and the fasting result is the one to remember. Given as an oral suspension, bioavailability came out at roughly 16 per cent. When the animals were fasted, that fell below 5.5 per cent. Formulating the same dose into a properly solubilised solution pushed it up to around 59 per cent. The authors concluded that poor water solubility is the main barrier to pterostilbene's oral absorption (Yeo and colleagues, Molecular Nutrition and Food Research, 2013).

Again, rats rather than people, so read the exact percentages as illustrative. But the principle is solid and it is the same principle that governs vitamin D, vitamin E and CoQ10. A fat-soluble compound taken on an empty stomach is partly wasted.

So the practical advice is unglamorous. Take pterostilbene with a meal that contains some fat. Not a huge meal, and not a special one. Ordinary breakfast with eggs or yoghurt, or lunch with olive oil on something, is entirely sufficient. Taking a 100 mg capsule with a black coffee at seven in the morning may well deliver less to you than a 50 mg capsule taken with lunch.

As for morning versus evening, there is no human trial that settles it, and anyone telling you otherwise is extrapolating from a mathematical model of NAD rhythms rather than from data on pterostilbene. My own view is that the best time is whichever mealtime you will actually remember, every day, for months. Consistency beats optimisation here by a wide margin. We go into this in more depth in our guide to when to take NMN with TMG and resveratrol.

Splitting the Dose or Taking It All at Once

The trial that anchors the safety ceiling used twice-daily dosing, so 125 mg morning and 125 mg evening rather than 250 mg in one go. If you are running at the higher end of the range, splitting is the pattern that has actually been tested, and I would follow it.

At 50 mg to 100 mg a day, which is where most people and most sensible formulas sit, once daily with a meal is perfectly reasonable. Pterostilbene clears more slowly than resveratrol does, which is precisely the point of the methyl groups, so there is less argument for chasing it around the clock.

One thing I would avoid is the habit of taking a double dose to catch up after a missed day. It does not work that way with polyphenols, and it pushes you toward the part of the range where the LDL question lives.

How Long Before You Reassess

The published human trial ran for six to eight weeks. That is a reasonable frame to borrow for your own thinking: give it a couple of months of consistent daily use before you form any view, and then actually form one rather than drifting.

Reassessing honestly means asking whether you can point to any reason to continue beyond the fact that you bought a second pouch. If you are taking it as part of a wider NAD-focused routine, the sensible question is whether that whole routine still earns its place, not whether one ingredient in it does. We have written a fuller version of that argument in is NMN worth taking, and the same reasoning applies here.

A Few Cautions Worth Knowing

Short section, but please do read it.

• Raised cholesterol or lipid monitoring. Because of the LDL finding described above, if your cholesterol is being watched, talk to your GP before starting standalone pterostilbene, particularly at the higher end of the range.
• Blood pressure medicines. The same trial recorded reductions in blood pressure at the higher dose. If you take medication for blood pressure, that is a conversation for your GP or pharmacist rather than something to manage yourself.
• Blood thinners. Stilbenes as a class have been studied for effects on platelet behaviour. If you take warfarin, a direct oral anticoagulant, or regular aspirin, check before adding any stilbene supplement.
• Pregnancy and breastfeeding. There is no safety data here, so it is a no. The same applies to anyone under 18.
• Existing medication generally. Polyphenols can interact with the enzymes that metabolise medicines. If you are on anything regular, a quick word with your pharmacist costs nothing.
• Do not stack blindly. As above, count every product in your cupboard that contains pterostilbene before deciding you are at 50 mg.

What to Realistically Expect

I would rather be straight with you than sell you a feeling.

Pterostilbene is not something you take and notice. There is no day-two effect, no perceptible lift, nothing you could pick out in a blind test. The human evidence base consists of essentially one trial of eighty people run over a couple of months, plus a body of laboratory and animal work that is genuinely interesting but is not the same thing as evidence in people.

What you are actually buying, at a sensible dose inside a well-built formula, is a small, well-characterised, reasonably well-absorbed polyphenol that broadens the profile of what you are already taking. That is a modest and defensible proposition. If someone is selling you more than that, be sceptical of them rather than of the compound.

And if you are choosing between spending on a high-dose standalone pterostilbene capsule and spending on the basics, the basics win. Vitamin D through a British winter, enough iron if you are low, a B12 source if you eat little or no animal food. Those are the ones with the evidence and the authorised claims behind them. You can browse the full set in our supplement guides hub, and the wider NAD picture sits in our guide to choosing an NMN supplement in the UK.

Frequently Asked Questions

Is 50 mg of pterostilbene a day enough?

It sits below the amounts used in the published human trial, which tested 100 mg and 250 mg a day, but it is the most common amount used inside combination formulas and it is the end of the range with the least uncertainty attached to it. Given how much better pterostilbene is absorbed than resveratrol, 50 mg taken consistently with food is a reasonable daily amount, and it is what we use in our own formula.

Can you take 500 mg of pterostilbene a day?

No published human trial has tested 500 mg a day. The safety work stops at 250 mg a day over six to eight weeks. Going to double the highest tested amount means you are past the point where anyone has checked, and you would be doing that without the benefit of the monitoring the trial participants had. I would not.

Should pterostilbene be taken with food?

Yes. It is fat soluble, and in animal pharmacokinetic work fasting cut its oral bioavailability to below 5.5 per cent, against roughly 16 per cent when given normally. Take it with a meal that contains some fat. Which meal matters far less than whether there is a meal at all.

Is pterostilbene better than resveratrol?

Better is the wrong frame. Pterostilbene is more stable in the body and better absorbed, which is why a smaller amount goes further. Resveratrol has far more human research behind it. That is why our formula carries both, at different amounts, rather than picking a side. There is a full comparison in our separate guide on the two.

Does pterostilbene raise cholesterol?

In one randomised trial of eighty adults who already had raised cholesterol, LDL rose by an average of 17.1 mg/dL in the arms taking pterostilbene on its own. That rise was not seen in the arm that combined a lower pterostilbene dose with grape extract, and having an existing cholesterol medicine appeared to blunt it. It is one trial in a selected group, so it is a reason to talk to your GP if your lipids are being watched, not a reason to panic.

How long does it take pterostilbene to work?

There is no honest timeline to give you, because the human research has not measured a subjective effect to time. The published trial ran for six to eight weeks, which is a sensible period to use consistently before you reassess whether it earns a place in your routine.

Can I get enough pterostilbene from blueberries?

Not at anything approaching supplement amounts. Measured pterostilbene content in blueberry species runs at roughly 99 to 520 nanograms per gram of dried berry, so reaching even 50 mg from food alone is not realistic. Eat the blueberries anyway, for everything else they bring.

Where I Would Leave It

If you take one number away from this page, make it 250 mg a day, because that is the ceiling the only proper human safety trial actually reached, and everything above it is uncharted. If you take two, make the second one 50 mg, because that is where a well-built combination formula tends to land and where the evidence sits most comfortably.

And take it with your lunch.

Dr. Miron, Founder of Pure Vitamins UK

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Sources

• Riche DM and colleagues. Analysis of safety from a human clinical trial with pterostilbene. Journal of Toxicology, 2013. Read the paper
• Riche DM and colleagues. Pterostilbene on metabolic parameters: a randomized, double-blind, and placebo-controlled trial. Evidence-Based Complementary and Alternative Medicine, 2014. Read the paper
• Kapetanovic IM and colleagues. Pharmacokinetics, oral bioavailability, and metabolic profile of resveratrol and its dimethylether analog, pterostilbene, in rats. Cancer Chemotherapy and Pharmacology, 2011. Read the paper
• Yeo SCM and colleagues. Pharmacokinetics of pterostilbene in Sprague-Dawley rats. Molecular Nutrition and Food Research, 2013. Read the paper
• Dellinger RW and colleagues. Repeat dose NRPT (nicotinamide riboside and pterostilbene) increases NAD levels in humans safely and sustainably. npj Aging and Mechanisms of Disease, 2017. Read the paper
• Rimando AM and colleagues. Resveratrol, pterostilbene, and piceatannol in Vaccinium berries. Journal of Agricultural and Food Chemistry, 2004, volume 52, pages 4713 to 4719.

A food supplement is not a substitute for a varied, balanced diet and a healthy lifestyle. This article is for general information and is not medical advice. If you take medication or have a medical condition, speak to your GP or pharmacist before starting any new supplement.