Pterostilbene

Pterostilbene is the flashy resveratrol cousin that supplement brands love to hype—but the real story is more interesting than the marketing. Early human studies show legit signals for blood pressure and fasting glucose, while one cholesterol result goes the wrong way.

4 papers 14 claims 15 outcomes

Pterostilbene is a plant compound in the polyphenol family, found naturally in blueberries, grapes, and certain tree woods. Chemically, it sits very close to resveratrol, which is why people lump them together, but pterostilbene behaves a little differently once you swallow it.²

Pterostilbene carries two extra methyl groups that work like adding wax to a paper bag—they make the molecule less waterlogged, so it slips through fatty cell membranes more easily and tends to stick around longer in circulation.² In lab and animal research, it turns on nutrient- and stress-sensing systems such as SIRT1, AMPK, and antioxidant-response pathways, which act like a cell's fuel gauge, thermostat, and cleanup crew.³ That gives researchers a believable mechanism for the early human signals in blood pressure, fasting glucose, and oxidative-stress markers, but the human evidence base is still small enough that confidence stays limited.¹⁴

Dosing

How to take pterostilbene

Range

Human trials in this dataset cluster between 100 and 250 mg per day. The standout protocols were 100 mg/day for blood-sugar outcomes, 200 mg/day for oxidative-stress outcomes, and 125 mg twice daily (250 mg/day total) for several blood-pressure and metabolic endpoints.¹⁴

Timing

Trials generally used oral daily dosing, either once per day or split into two capsules per day, for roughly 6 to 8 weeks.¹⁴ Taking it with food makes practical sense because pterostilbene is fat-friendly, and split dosing matches the best-studied 250 mg/day protocol.¹²

Form

Most human data use purified oral pterostilbene capsules rather than blueberry powders or food-based extracts. The best-studied cardiometabolic protocol used 125 mg twice daily, while smaller studies used 100 mg or 200 mg once daily depending on the endpoint.¹⁴

More findings

Smaller effects and promising leads

2 promising leads — steady your blood sugar levels, lower your blood pressure

Steady your blood sugar levels — Keeps fasting glucose and your three-month average in a healthier range. ^40024751

1 studies · 18 people

Lower your blood pressure — Brings down both systolic and diastolic, especially when baseline runs high. ^{25057276,37671486}

2 studies · 99 people

12 early-stage findings — lose weight on the scale, boost skin hydration, clear dandruff flakes, lower triglycerides, and 8 more

Lose weight on the scale — Less weight on your joints, better blood markers, easier movement. ^{25057276 +1}

2 studies

Boost skin hydration — Locks more moisture into skin so it feels softer and less tight. ^35696226

1 study

Clear dandruff flakes — Reduces visible scalp flaking and dryness within the first couple months. ^35696226

1 study

Lower triglycerides — Reduces the blood fats that rise after meals and drive heart risk. ^{25057276 +1}

2 studies

Raise good cholesterol levels — Boosts the cholesterol that pulls fat out of artery walls. ^25057276

1 study

Reduce fine lines and wrinkles — Smooths crow's feet, forehead lines, and surface roughness. ^35696226

1 study

Build firmer, denser skin — More collagen density for skin that bounces back and holds its shape. ^35696226

1 study

Build glutathione antioxidant levels — Your cells' main internal antioxidant defense gets deeper reserves. ^37671486

1 study

Reduce oxidative cell damage — Less oxidative damage to your cell membranes, proteins, and DNA. ^37671486

1 study

Boost skin radiance — Better blood flow and hydration working together under the surface. ^35696226

1 study

Increase antioxidant defenses — Your blood neutralizes oxidants faster, before they damage cells. ^37671486

1 study

Lower bad and total cholesterol — Cuts the cholesterol that builds into artery plaque over time. ^25057276

1 study

Safety

What to watch for

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thromboembolic event (venous thromboembolism) — severe

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constipation — moderate

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dizziness — moderate

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fatigue — moderate

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gait disturbance — moderate

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headache — moderate

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rash maculo-papular — moderate

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urinary tract infection — moderate

Interactions

Drug and supplement interactions

gefitinib — major, increases_effect

sertraline — major, increases_effect

polymyxin B — major, increases_effect

colistin — major, increases_effect

carbamazepine — major, increases_concentration

oxcarbazepine — major, increases_concentration

paclitaxel — major, increases_concentration

gentamicin — moderate, increases_effect

antidepressants — moderate, increases_toxicity

clonazepam — moderate, increases_effect

Synergies

What pairs well

Grape

1 shared endpoints · d=0.23

The bottom line

Pterostilbene looks most interesting if you want an experimental add-on for blood pressure or fasting-glucose support and you understand that the evidence is still early. It is not a first-pick supplement for cholesterol, because one human trial pushed LDL and total cholesterol the wrong direction while other benefits looked better.¹ Skip it if you use medications with major interaction risk or if your clinician already monitors you closely for clotting-related issues.

Frequently asked

Common questions

What is pterostilbene, exactly?

Pterostilbene is a polyphenol found in small amounts in blueberries and grapes. It looks a lot like resveratrol, but its structure makes it more fat-friendly and longer-lasting in the body, which is why supplement companies market it as the more practical cousin.²

Does pterostilbene lower blood pressure?

Early human research suggests it does, especially around 200 to 250 mg per day and especially when baseline blood pressure starts higher. The catch: the trial count is still tiny, so this sits in the promising-not-proven bucket.¹

Can pterostilbene raise LDL cholesterol?

Surprisingly, yes—one small human trial found LDL and total cholesterol moved in the wrong direction even while blood pressure improved.¹ That makes pterostilbene a bad choice for anyone assuming every antioxidant automatically improves a lipid panel.

What dose has actually been studied in humans?

The small human dataset used 100 mg/day for glucose endpoints, 200 mg/day for oxidative-stress markers, and 250 mg/day for several cardiometabolic outcomes, usually over about 6 to 8 weeks.¹⁴

Is pterostilbene worth taking for skin?

Right now, skin claims sit on single-study territory. Early findings on hydration, radiance, and wrinkles look interesting, but they need replication before pterostilbene earns a serious spot as a skin supplement.⁴

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Sources

Generated April 3, 2026