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Almost every article comparing these two supplements reaches the same verdict: pterostilbene absorbs better, so pterostilbene wins. The absorption part is true. The verdict skips over the gut, the human evidence, and one cholesterol finding you should know about before you buy.
Resveratrol and pterostilbene are close chemical cousins. Pterostilbene is essentially resveratrol with two small methyl groups added, and that tiny change alters how your body handles it. It stays in your blood longer, reaches tissues more easily, and resists breakdown. But it also means less of it reaches your gut bacteria, and that turns out to matter.
The short version
- In rats, pterostilbene is about 80% bioavailable compared with about 20% for resveratrol, and it stays in the blood roughly seven times longer.
- Resveratrol has dozens of human trials behind it. Pterostilbene has essentially one standalone trial of 80 people.
- Pterostilbene on its own raised LDL cholesterol in that trial, though pairing it with grape extract prevented the rise.
- For gut and microbiome goals, resveratrol likely has the edge. Its “poor” absorption leaves more of it for your gut bacteria to work with.
- You don’t have to choose. The two occur together in nature, and taking both covers the strengths of each.
Table of Contents
Same family, one small difference
Both compounds are stilbenes, a group of polyphenols plants make to defend themselves against fungi and stress. Resveratrol has three hydroxyl (-OH) groups. Pterostilbene swaps two of those for methoxy (-OCH3) groups, keeping just one hydroxyl.
That swap matters because hydroxyl groups are where your liver and gut wall attach glucuronide and sulfate tags to prepare compounds for excretion. Resveratrol’s preferred tagging spot is exactly the position that’s capped off in pterostilbene. With fewer handles to grab, your body clears pterostilbene more slowly, and the methyl groups make it more fat-soluble, so it slips through cell membranes more easily (Nagarajan et al., 2022).
A short history of both compounds
Both compounds were discovered within a year of each other, on opposite sides of Asia, and then mostly ignored for half a century.
Resveratrol was first isolated in 1939 by Japanese chemist Michio Takaoka from the root of white hellebore (Veratrum grandiflorum), a toxic plant with a long medicinal history (review, 2020). Its name likely blends where it came from and what it is: a resorcinol-type compound from Veratrum, with alcohol groups (Pezzuto, 2019). In 1963, researchers found it in the root of Japanese knotweed, known as Ko-jo-kon in Japan and Hu Zhang in China, a plant used for centuries in traditional Chinese and Japanese medicine. By 1976 scientists had learned that grapevines produce resveratrol as a defense when they’re infected or injured (Baur and Sinclair, 2006).
Then 1992 changed everything. That year, resveratrol was measured in wine for the first time, and French researchers described the “French paradox,” the puzzle of low heart disease rates in France despite a diet rich in saturated fat. Red wine, and resveratrol with it, became the leading explanation. In 1997, a landmark paper in Science showed resveratrol blocked cancer development in animal models, and research exploded. Resveratrol now appears in more than 20,000 scientific papers (Pezzuto, 2019).
Pterostilbene was first isolated in 1940 from the heartwood of red sandalwood (Pterocarpus santalinus), a slow-growing tree native to southern India prized for its deep red wood (Kosuru et al., 2016). Its name comes from that tree genus. It’s also an active ingredient in the Indian kino tree (Pterocarpus marsupium), known as Vijaysar, which has traditionally been used in India to manage diabetes.
Pterostilbene stayed obscure until the early 2000s. Agnes Rimando, a chemist with the USDA’s Agricultural Research Service in Mississippi, published its cancer-preventive activity in 2002. In 2004, she and her colleagues reported that blueberries are a ready source of pterostilbene, along with animal research suggesting it could lower cholesterol (USDA Agricultural Research, 2006). That work, and a collaboration between the USDA and the University of Mississippi, helped bring pterostilbene to the supplement market.
Where each one comes from and how supplements are made
In food, resveratrol is concentrated in red grape skins, red wine, peanuts, and some berries. Pterostilbene is found mostly in blueberries, with smaller amounts in grapes and peanuts. But neither supplement is usually made from those foods, because the amounts are far too small.
Most resveratrol supplements come from Japanese knotweed root (Polygonum cuspidatum, also called Fallopia japonica). The dried root is extracted with solvents such as ethanol, water, and ethyl acetate, then purified to trans-resveratrol, with much of the world’s supply coming from China. Japanese knotweed is fast-growing and is an invasive weed across much of North America, so there’s no shortage of raw material. Some products use grape skin or seed extracts instead, which deliver less resveratrol but a broader mix of grape polyphenols.
Purity matters here. Knotweed root naturally contains emodin, a compound with a laxative effect, and lower-purity extracts (often labeled as 50% resveratrol) can carry more of it. If a resveratrol supplement upsets your stomach, a higher-purity product labeled 98% trans-resveratrol may solve it.
Most pterostilbene supplements are “nature-identical.” Because blueberries and Indian kino bark contain so little, most pterostilbene on the market is made in a lab to be chemically identical to the natural compound. The best-known branded ingredient, pTeroPure, is sold as 99% pure nature-identical trans-pterostilbene (Nutritional Outlook, 2011). A smaller number of products use Indian kino bark extract or blueberry concentrates, usually as a complement rather than the main source.
“Nature-identical” can sound like a red flag, but the molecule is the same one a blueberry makes. What matters more is purity, the trans form, and third-party testing.
Bioavailability: where pterostilbene clearly wins
The key head-to-head study, funded by the National Cancer Institute, gave rats equal molar doses of each compound for 14 days. Resveratrol was about 20% bioavailable, while pterostilbene was about 80%. Blood levels of pterostilbene and its sulfate form were markedly higher than the resveratrol equivalents (Kapetanovic et al., 2011).
Half-life shows a similar gap: about 14 minutes for resveratrol versus about 105 minutes for pterostilbene. Many websites describe that 105-minute figure as human data. It isn’t. The Alzheimer’s Drug Discovery Foundation notes that pterostilbene’s half-life hasn’t been documented in humans and cites 1.7 hours in rats (ADDF, 2024). The direction is almost certainly the same in people, but the exact numbers are from animals.
This is why you’ll see pterostilbene products sold at much lower doses than resveratrol. But better absorption in a rat doesn’t automatically mean better results in a person, and that’s where the evidence gap comes in.
Human evidence: where resveratrol clearly wins
Resveratrol has been through dozens of randomized trials in people, covering blood pressure, blood sugar, blood vessel function, inflammation, cognition, and the gut microbiome. One blood pressure meta-analysis alone pooled 17 of them (Fogacci et al., 2019).
Pterostilbene’s human evidence rests largely on a single randomized trial. Researchers at the University of Mississippi gave 80 adults with high cholesterol one of four treatments for 6 to 8 weeks: 50 mg of pterostilbene twice daily, 125 mg twice daily, 50 mg plus 100 mg of grape extract twice daily, or placebo. The trial was run in collaboration with ChromaDex, a pterostilbene ingredient supplier.
| Outcome | What happened with pterostilbene |
|---|---|
| Safety | No adverse effects on liver, kidney, or blood sugar markers. Considered generally safe up to 250 mg per day (Riche et al., 2013). |
| Blood pressure | At 250 mg per day, systolic dropped by 7.8 mmHg and diastolic by 7.3 mmHg. The low dose with grape extract lowered systolic pressure. |
| LDL cholesterol | Rose by 17.1 mg/dL with pterostilbene alone. No significant rise when combined with grape extract (Riche et al., 2014). |
| Weight | Small weight loss in participants not on cholesterol medication. |
A blood pressure drop of nearly 8 points is impressive for a supplement. But it comes from one small, industry-supported trial that hasn’t been replicated with pterostilbene alone.
The LDL cholesterol flag
This is the finding most comparison articles leave out. In the same trial, pterostilbene on its own raised LDL cholesterol by about 17 mg/dL over 6 to 8 weeks. The rise was smaller in people already taking cholesterol medication, and it didn’t appear at all when pterostilbene was paired with grape extract.
Nobody knows exactly why, and a single trial isn’t the final word. The ADDF’s review also notes that pterostilbene may raise cholesterol and may interact with some drugs. For anyone with elevated LDL or a family history of heart disease, I’d treat this as a real signal. If you do try pterostilbene, get a lipid panel before you start and again after 6 to 8 weeks. That’s “test, not guess” in action.
The gut twist: why “better absorbed” isn’t always better
Here’s where the story gets interesting. In my deep dive on resveratrol and the gut microbiome, I explained that resveratrol’s poor absorption has an upside. Much of each dose reaches the colon, where your bacteria convert it into compounds like dihydroresveratrol and lunularin, which may do much of the real work.
Pterostilbene flips that pattern. Because more of it is absorbed higher up, less of it arrives in the colon for bacteria to transform.
Animal studies that compared the two directly back this up:
- Intestinal injury in piglets. Both compounds improved the gut lining and reduced leakiness. Pterostilbene had stronger effects on oxidative stress, villus height, and the tight junction protein occludin. Resveratrol had the stronger effect on gut bacteria and was the only one to significantly raise butyrate, the short-chain fatty acid that fuels colon cells (Journal of Animal Science and Biotechnology, 2021).
- Fatty liver in rats. On a high-fat, high-fructose diet, lower doses of pterostilbene increased Akkermansia, a bacterium linked to a healthy gut lining. Higher doses seemed to dampen microbial changes, and the microbiome shifts didn’t fully explain pterostilbene’s liver benefits (Nutrients, 2021).
- Circadian disruption in mice. In jet-lagged mice, both compounds helped restore daily rhythms in gut bacteria and blood markers, and pterostilbene prevented jet-lag weight gain (Koh et al., 2021).
The pattern that emerges is a division of labor. Pterostilbene looks like the stronger direct antioxidant, working in tissues. Resveratrol looks like the stronger microbiome modulator, working through your bacteria.
Which one should you choose?
If you only want one, the better choice depends on what you’re trying to accomplish. But as I explain below, for many people the best answer is both.
| Your goal or situation | Better fit | Why |
|---|---|---|
| Gut health and the microbiome | Resveratrol | More reaches the colon, and it had stronger effects on gut bacteria and butyrate in head-to-head animal work. |
| Insulin resistance or metabolic health | Resveratrol | Multiple human trials, including one showing microbiome and insulin improvements together. |
| Endometriosis or painful periods | Resveratrol | More research on inflammation and prostaglandins, and it’s what I’ve used with clients. |
| Brain health and antioxidant support | Pterostilbene | Better absorption and tissue penetration, including the brain in animal studies. |
| Elevated LDL cholesterol | Resveratrol, or pterostilbene only with grape extract | Pterostilbene alone raised LDL in the main human trial. |
| Wanting the most human data | Resveratrol | Dozens of trials compared with one standalone trial. |
| Wanting the strengths of both | Both together | Resveratrol for the gut, pterostilbene for tissue levels, and pairing may offset pterostilbene’s LDL effect. |
Dosing each one
Doses used in human research
- Resveratrol: Benefits in human trials cluster between about 150 and 500 mg per day of trans-resveratrol, taken for 8 to 12 weeks. I break down how I arrived at that range in my resveratrol and gut microbiome guide.
- Pterostilbene: The only human trial tested 100 mg and 250 mg per day, split into two doses, for 6 to 8 weeks. Doses up to 250 mg per day were considered safe. Blood pressure benefits appeared at 250 mg.
- With food: Both are fat-soluble, so taking them with a meal that contains some fat makes practical sense.
- Monitor: If you take pterostilbene, check a lipid panel before starting and after 6 to 8 weeks.
These are the doses used in research, not a personal prescription. Your right dose depends on your health history and medications.
You can’t realistically reach either dose through food. Blueberries contain roughly 99 to 520 nanograms of pterostilbene per gram (McCormack and McFadden, 2013). Reaching 100 mg would take around 200 kilograms of even the richest blueberries. Eat them anyway for their fiber and anthocyanins, but for research-level doses, a supplement is the only realistic route.
Why taking both together makes sense
Nature doesn’t make you choose. Grapes and blueberries contain both resveratrol and pterostilbene, and many supplements on the market combine them. There’s a logic to that pairing: pterostilbene reaches your blood and tissues, while resveratrol travels on to your gut bacteria.
The best human evidence for combining comes from the pterostilbene trial itself. Pterostilbene paired with grape extract, which supplies resveratrol and other grape polyphenols, did not raise LDL cholesterol the way pterostilbene alone did, and it still lowered systolic blood pressure (Riche et al., 2014). No trial has yet tested a resveratrol and pterostilbene combination directly, so that remains an open question for research.
Adding quercetin. Resveratrol and pterostilbene are often paired with quercetin, a flavonoid found in onions, apples, and capers that helps dampen the inflammatory cascade. In lab research, quercetin and resveratrol both calm mast cells, the immune cells that release histamine and other inflammatory signals, by reducing the receptor that triggers allergic reactions (lab study, 2022). In rats on a high-fat diet, the resveratrol and quercetin combination reduced weight gain and inflammation in fat tissue (rat study, 2017). One thing quercetin doesn’t do is boost resveratrol absorption. That idea looked promising in the lab, but a human study adding 500 mg of quercetin to resveratrol found no increase in blood levels (Smoliga and Blanchard, 2014). The value of the pairing is complementary anti-inflammatory action, not better absorption. You can read more in my post on quercetin for allergies, heart health, and more.
To make it simple, I’ve put together a Fullscript collection with resveratrol and pterostilbene options so you can get both at the same time. If you have high LDL, check your lipids before starting and again after 6 to 8 weeks, as you would with pterostilbene on its own.
Safety and who should be careful
Both compounds are generally well tolerated at the doses discussed here. Mild digestive upset is the most common complaint. A few groups should check with their provider first:
- People with high LDL or heart disease risk, especially when considering pterostilbene on its own.
- Anyone on blood thinners or antiplatelet drugs. Resveratrol reduces platelet clumping and could add to their effects.
- Anyone taking several medications. Pterostilbene may interact with some drugs, so ask your pharmacist.
- People with estrogen-sensitive conditions. Resveratrol has weak phytoestrogen activity.
- Pregnant or breastfeeding women. There isn’t enough safety data for either at supplement doses.
Where to buy
Look for products that list the exact amount of trans-resveratrol or trans-pterostilbene per capsule, and choose brands that share third-party test results. My Fullscript collection has practitioner-grade resveratrol and pterostilbene together, so you can get both in one order.
If you prefer to buy pterostilbene on its own, here are two options I link to:
My take
My take is that you don’t have to pick a side. Resveratrol and pterostilbene are found together in nature, many quality supplements already combine them, and each covers a gap the other leaves. Resveratrol brings the deeper human evidence and the gut connection, and it’s what I’ve seen help women with endometriosis and painful periods. Pterostilbene brings better absorption and a promising blood pressure signal. Taking both is probably the best approach for most people, ideally alongside quercetin for extra anti-inflammatory support.
The one exception is if your LDL cholesterol runs high. In that case, work with your provider and recheck your lipids after starting, since pterostilbene alone raised LDL in its main trial.
The bigger lesson is that absorption numbers don’t tell you everything. Where a compound goes in your body matters as much as how much of it gets there.
Frequently asked questions
Is pterostilbene better than resveratrol?
Pterostilbene is absorbed much better, with about 80% oral bioavailability compared with about 20% for resveratrol in rat studies. Resveratrol has far more human research behind it, and its poor absorption means more of it reaches your gut bacteria. Which one is better depends on your goal.
Does pterostilbene raise cholesterol?
In the main human trial, pterostilbene alone raised LDL cholesterol by about 17 mg/dL over 6 to 8 weeks. The increase was not seen when it was combined with grape extract, and it was smaller in people already taking cholesterol medication. If you take pterostilbene, check your lipids.
How much pterostilbene should I take?
Human trials have tested 100 and 250 mg per day for 6 to 8 weeks, and doses up to 250 mg per day were considered safe. Talk with your provider about the right dose for you.
Which is better for gut health, resveratrol or pterostilbene?
Resveratrol likely has the edge for the microbiome. In a head-to-head animal study, pterostilbene better protected the intestinal lining from oxidative stress, while resveratrol had a stronger effect on gut bacteria and raised butyrate.
Where do resveratrol and pterostilbene supplements come from?
Most resveratrol supplements are extracted from the root of Japanese knotweed and purified to trans-resveratrol. Most pterostilbene supplements are nature-identical, meaning they are made in a lab to be chemically identical to the pterostilbene in blueberries, because natural sources contain only tiny amounts.
Can you take resveratrol and pterostilbene together?
Yes, and many supplements combine them. They occur together in nature in grapes and blueberries, and in the main human trial, pairing pterostilbene with grape extract prevented the LDL rise seen with pterostilbene alone. No trial has tested a resveratrol and pterostilbene combination directly, so check with your provider, especially if you take medications.
References
- Kapetanovic IM, Muzzio M, Huang Z, Thompson TN, McCormick DL. Pharmacokinetics, oral bioavailability, and metabolic profile of resveratrol and its dimethylether analog, pterostilbene, in rats. Cancer Chemotherapy and Pharmacology. 2011;68:593-601. Link
- Alzheimer’s Drug Discovery Foundation. Pterostilbene: Cognitive Vitality Report. Updated June 2024. Link
- Nagarajan S, Mohandas S, Ganesan K, Xu B, Ramkumar KM. New insights into dietary pterostilbene: sources, metabolism, and health promotion effects. Molecules. 2022;27(19):6316. Link
- Riche DM, McEwen CL, Riche KD, et al. Analysis of safety from a human clinical trial with pterostilbene. Journal of Toxicology. 2013;2013:463595. Link
- Riche DM, Riche KD, Blackshear CT, et al. Pterostilbene on metabolic parameters: a randomized, double-blind, and placebo-controlled trial. Evidence-Based Complementary and Alternative Medicine. 2014;2014:459165. Link
- Fogacci F, Tocci G, Presta V, et al. Effect of resveratrol on blood pressure: a systematic review and meta-analysis of randomized, controlled, clinical trials. Critical Reviews in Food Science and Nutrition. 2019;59(10):1605-1618. Link
- Resveratrol and its derivative pterostilbene ameliorate intestine injury in intrauterine growth-retarded weanling piglets by modulating redox status and gut microbiota. Journal of Animal Science and Biotechnology. 2021. Link
- Gut microbiota induced by pterostilbene and resveratrol in high-fat-high-fructose fed rats: putative role in steatohepatitis onset. Nutrients. 2021. Link
- Koh YC, et al. Dietary pterostilbene and resveratrol modulate the gut microbiota influenced by circadian rhythm dysregulation. Molecular Nutrition & Food Research. 2021;65:2100434. Link
- McCormack D, McFadden D. A review of pterostilbene antioxidant activity and disease modification. Oxidative Medicine and Cellular Longevity. 2013;2013:575482. Link
- The plant-derived compound resveratrol in brain cancer: a review. 2020. Link
- Pezzuto JM. Resveratrol: twenty years of growth, development and controversy. Biomolecules & Therapeutics. 2019;27(1):1-14. Link
- Baur JA, Sinclair DA. Therapeutic potential of resveratrol: the in vivo evidence. Nature Reviews Drug Discovery. 2006;5:493-506. Link
- Kosuru R, Rai U, Prakash S, Singh A, Singh S. Promising therapeutic potential of pterostilbene and its mechanistic insight based on preclinical evidence. European Journal of Pharmacology. 2016;789:229-243. Link
- USDA Agricultural Research Service. Pterostilbene research profile. Agricultural Research Magazine. November 2006. Link
- Quercetin and resveratrol differentially decrease expression of the high-affinity IgE receptor (FcεRI) by human and mouse mast cells. 2022. Link
- Combination treatment with quercetin and resveratrol attenuates high fat diet-induced obesity and associated inflammation in rats via the AMPKα1/SIRT1 signaling pathway. 2017. Link
- Smoliga JM, Blanchard O. Enhancing the delivery of resveratrol in humans: if low bioavailability is the problem, what is the solution? Molecules. 2014;19(11):17154-17172. Link
- New pterostilbene, resveratrol supplement introduced. Nutritional Outlook. April 2011. Link
This article is for educational purposes and is not medical advice. Talk with your healthcare provider before starting any supplement, especially if you take medications or have a health condition. Some links are affiliate links, which means I may earn a small commission at no extra cost to you. #TheHealthyRD
