Best Pterostilbene Supplements 2026: 6 Products Compared

Last updated: August 28, 2026 · Published by Eternal Elixir

Last updated: August 28, 2026 · By Eternal Elixir Editorial · 6 products compared

You add pterostilbene to your cart, glance at the label, and realize the two bottles in front of you are not remotely comparable. One holds 50 mg per capsule. The other holds 500 mg — ten times the dose, in a capsule that looks identical. Neither label tells you which one matches what researchers actually gave people.

That is the real problem with shopping for the best pterostilbene supplement in the US. Capsule strengths in this category span a 10x range, prices per bottle span a 7x range, and the two numbers move independently of each other. A cheap bottle can be the most expensive way to buy the compound, and the strongest capsule can be the hardest one to actually dose correctly.

So we did the arithmetic that product pages leave out. We read every price live from the brand’s own US listing on August 28, 2026, divided by the total milligrams of trans-pterostilbene in the bottle, and then checked something almost no comparison does: whether each product can actually deliver the daily doses used in published human research without splitting or stacking capsules.

The short version: the best pterostilbene supplement is the one whose capsule strength matches a dose that has actually been studied in people — 100 mg or 250 mg per day — at the lowest cost per 100 mg you can find.

Key numbers:

• Cost per 100 mg of trans-pterostilbene across the six products ranges from $0.14 to $0.73 — a 5.2x spread.
• The only published randomized human trial tested 100 mg/day and 250 mg/day (50 mg or 125 mg twice daily) over 6–8 weeks (PMID 25057276).
• That trial reported systolic blood pressure down 7.8 mmHg (P < 0.01) on the high dose — alongside an LDL increase of 17.1 mg/dL (P = 0.001) on pterostilbene alone.
• A separate randomized study gave 200 mg/day to 60 healthy adults for short-term safety assessment (PMID 37671486).
• Only 2 of 6 products can hit a studied daily dose with exactly one capsule.

Why capsule strength decides the best pterostilbene supplement

Most supplement comparisons rank on price per bottle or price per capsule. For pterostilbene, both are close to meaningless, because capsule strength varies more than anything else on the shelf.

Consider two real products from this roundup. Swanson Ultra sells a 50 mg capsule for $8.19 a bottle — by far the cheapest bottle here.

Eternal Elixir sells a 500 mg capsule at $64.99 — by far the most expensive.

On price per bottle, that looks like an eight-fold difference in favor of Swanson.

On cost per 100 mg of actual trans-pterostilbene, Swanson costs $0.55 and Eternal Elixir costs $0.14. The ranking inverts completely.

This is the same arithmetic trap we walked through in our guide to the best resveratrol supplements, where 98% purity claims disguise wildly different actual doses. Stilbenes are sold by capsule, but they work by milligram.

Capsule strength also decides something blunter: can you hit a studied dose at all? Human research here is thin — one randomized controlled trial on metabolic endpoints, one randomized safety study. Between them, the daily doses actually administered were 100 mg, 200 mg and 250 mg.

If your capsule is 50 mg, you take two or five. If your capsule is 500 mg, you cannot reach any of those numbers, because you cannot reliably split a filled capsule. That is a genuine limitation, and it applies to our own product as much as anyone’s. We have written more about the underlying evidence in our pterostilbene benefits and dosage guide.

Best pterostilbene supplements 2026 at a glance

Every row below is normalized to the same unit — US dollars per 100 mg of trans-pterostilbene — so the column is directly comparable across bottles of different sizes and strengths. Prices were read live from each brand’s own US listing on August 28, 2026.

1. ProHealth Pterostilbene Pro 250 — best overall

ProHealth Longevity is a US longevity-focused brand, and its Pterostilbene Pro 250 is the product that lines up most cleanly with the published research. One capsule delivers 250 mg of pterostilbene, which is precisely the high-dose arm administered in the randomized controlled trial discussed below. No splitting, no doubling, no guesswork.

Key specs: 250 mg per capsule, 60 capsules per bottle, $29.15, third-party tested, 4.8 out of 5 across 63 customer ratings on the brand’s own listing.

Pros:

• One capsule equals a dose actually administered in a published human trial
• Second-best value on this table at $0.19 per 100 mg
• 60 capsules is a two-month supply at one per day
• Strong, high-volume customer rating from a specialist longevity retailer
• Third-party tested, shipped domestically within the US

Cons:

• 250 mg is the dose associated with the LDL increase seen in the trial — a real consideration if your cholesterol is already elevated
• No lower-strength option in the same product line for people who want to start smaller
• Narrower catalog than the largest US supplement brands if you want to build a wider routine

Best for: anyone who wants to take the dose that was actually studied, in a single capsule, without doing arithmetic.

Price and where to buy: $29.15 direct from ProHealth’s US site.

2. Eternal Elixir Trans-Pterostilbene 500mg — best cost per 100 mg

This is our own product, and we are ranking it second rather than first for a specific reason we will state plainly.

On pure value it wins outright: 500 mg of trans-pterostilbene per capsule across 90 capsules works out to 45,000 mg in the bottle for $64.99, or $0.14 per 100 mg — the lowest figure on this table by a clear margin, roughly a quarter of what the most expensive option costs per milligram.

The formulation is deliberately plain. Each capsule contains trans-pterostilbene (3,5-dimethoxy-4′-hydroxystilbene) at 500 mg, rice flour as a carrier, and a cellulose capsule shell. There is no proprietary blend and no undisclosed filler stack. Every product from Eternal Elixir is third-party lab tested and made under GMP certified manufacturing.

Key specs: 500 mg per capsule, 90 capsules per bottle, 90 label servings at one capsule per serving, $64.99, third-party lab tested, GMP certified manufacturing, ships in 24 hours, free shipping over $100, 30-day money back guarantee.

Pros:

• Lowest cost per 100 mg of any product compared here, at $0.14
• 90 capsules per bottle — the longest supply on this table
• Single-active formula with the full inactive ingredient list published on the product page
• Third-party tested and GMP certified, with US shipping in 24 hours
• Sits inside a 20-product longevity range, so it stacks easily with NAD+ and other polyphenol support

Cons:

• 500 mg per capsule is above any dose used in published human pterostilbene research. The highest daily amount administered in the randomized trial was 250 mg. If you want to take a studied dose, this capsule cannot be divided to get there.
• Highest upfront bottle price here at $64.99, even though the per-milligram cost is the lowest
• Fewer public customer reviews than the long-established US brands on this list

Best for: experienced users who already know pterostilbene suits them, want the lowest cost per milligram available, and are building a broader longevity routine rather than buying a single bottle.

Price and where to buy: $64.99 at Eternal Elixir Trans-Pterostilbene 500mg, shipped from within the US.

3. Double Wood Pterostilbene — best for matching the low trial dose

Double Wood has become the default US mid-market supplement brand, and its pterostilbene is a good example of why. At 100 mg per capsule it lands exactly on the low-dose arm of the published trial — 50 mg twice daily, or one capsule a day if you prefer single dosing — and at $19.95 it is the cheapest realistic entry point into a studied dose.

Key specs: 100 mg per capsule, 60 capsules per bottle, $19.95, third-party tested, manufactured in the USA, no magnesium stearate.

Pros:

• 100 mg per capsule matches a dose used in human research
• Cheapest bottle that reaches a studied dose without stacking capsules
• Stocked through Amazon, Target, Vitacost and other major US retailers, so it is easy to find
• Third-party tested with a clean excipient profile

Cons:

• $0.33 per 100 mg is more than double the best value on this table
• 60 capsules is only two months at one per day, and one month if you follow the twice-daily trial protocol
• Review volume on the brand’s own site is thin, though marketplace listings carry far more

Best for: first-time pterostilbene buyers who want a studied dose without committing much money. We looked at the brand’s wider catalog in our full Double Wood Supplements review.

Price and where to buy: $19.95 direct, with broad US retail availability.

4. Jarrow Formulas trans-Pterostilbene — best for careful titration

Jarrow has been selling stilbenes longer than almost anyone on this list, and its 50 mg capsule is the most flexible dosing unit available. If you want to start at 50 mg, move to 100 mg, and stop there, this is the cleanest way to do it without cutting anything.

Key specs: 50 mg trans-pterostilbene per capsule, 60 veggie capsules, $21.99 to $29.45 depending on retailer, vegan, gluten-free.

Pros:

• 50 mg increments make gradual dose-finding straightforward
• Two capsules give you exactly the 100 mg studied daily dose
• Long-standing brand with wide US distribution through Walmart, Swanson, Vitacost and Macy’s
• Vegan capsule, gluten-free

Cons:

• Most expensive option per milligram here at $0.73 per 100 mg
• Price varies by roughly 34% between retailers, so it pays to compare listings
• At 100 mg/day a bottle lasts only a month

Best for: cautious users who want to build up slowly and are willing to pay a premium per milligram for that control.

Price and where to buy: $21.99 at Swanson Vitamins, up to $29.45 at Walmart.

5. Swanson Ultra Pterostilbene — best low-cost first trial

At $8.19 for 30 capsules, this is the cheapest way to find out whether it agrees with you before spending real money. It is a 50 mg capsule in a 30-count bottle, which is a one-month trial at one per day.

Key specs: 50 mg per capsule, 30 veg capsules, $8.19, vegan, non-GMO, 3.5 out of 5 across 8 ratings.

Pros:

• Lowest-risk way to trial the compound at $8.19
• Widely stocked and easy to reorder
• Vegan, non-GMO capsule

Cons:

• $0.55 per 100 mg — nearly four times the best value here
• Only 30 capsules, so a studied 100 mg/day dose empties the bottle in 15 days
• Lowest customer rating on this table, from a small number of reviews

Best for: a genuinely low-stakes first trial, not a long-term supply.

Price and where to buy: $8.19 direct from Swanson.

6. Vitality Pro Advanced Pterostilbene — best absorption-focused formula

Vitality Pro takes the opposite approach to the single-active products above. Each capsule pairs 100 mg of trans-pterostilbene with 200 mg of grape seed extract and 10 mg of piperine, on the reasoning that a fat-soluble stilbene benefits from absorption support and complementary polyphenols.

That combination is more interesting than it first appears. In the randomized trial, the LDL increase seen with pterostilbene alone was not observed in the group that took pterostilbene alongside grape extract. That is a single finding from one study and should not be over-read, but it is the one formulation detail on this list with a specific piece of human data behind it.

Key specs: 100 mg trans-pterostilbene plus 200 mg grape seed extract and 10 mg piperine per capsule, 60 capsules, $38.00, over 98% purity, third-party tested, 4.7 out of 5 across 49 ratings.

Pros:

• The only product here combining pterostilbene with grape-derived polyphenols
• Third-party tested at over 98% purity
• 100 mg matches the low studied dose
• Strong customer rating across a reasonable review count

Cons:

• $0.63 per 100 mg of pterostilbene — second-worst value on the table
• UK-based brand, so US delivery is slower and less predictable than domestic options
• Piperine can interact with some medications, which makes this the wrong pick if you take prescription drugs without checking first

Best for: buyers specifically interested in the grape extract combination and willing to accept slower US shipping.

Price and where to buy: $38.00 direct from Vitality Pro.

How we scored these six pterostilbene supplements

We applied five weighted criteria and let the ranking fall where the numbers put it. Eternal Elixir came second. We think that is the honest result, and we would rather publish it than reweight the criteria until our own product wins.

• Quality and purity (30%) — third-party testing, declared active amounts, published inactive ingredients, manufacturing standards.
• US availability and shipping speed (20%) — domestic fulfillment, retail breadth, realistic delivery times.
• Price per dose in USD (20%) — cost per 100 mg of trans-pterostilbene, calculated from live prices and label-declared strength.
• Product range for stacking (15%) — whether the brand supports a wider longevity routine.
• Customer reviews and reputation (15%) — rating and review volume on the brand’s own listing.

ProHealth finished ahead of us on the combination of dose appropriateness and review depth. We finished ahead on cost per milligram and catalog breadth. Double Wood was close behind both on the strength of retail availability. The three products at the bottom of the table lost ground almost entirely on value per milligram, which is the criterion that separates this category most sharply.

One thing we did not do: claim to have tested these products ourselves. We did not run competitor bottles through a lab. Every specification here comes from the brand’s own published label and listing, read on August 28, 2026, and every dose claim is checked against the published research linked below. The same approach underpins our other comparisons, including the best NMN supplements roundup.

What the human evidence supports — and what it does not

It is a methylated stilbene structurally related to resveratrol, found naturally in blueberries and in Pterocarpus marsupium heartwood. Most of what circulates about it online comes from cell and animal work. The human record is genuinely small, and worth stating precisely.

The central study is a randomized, double-blind, placebo-controlled trial published in Evidence-Based Complementary and Alternative Medicine (PMID 25057276). Researchers enrolled 80 adults with total cholesterol at or above 200 mg/dL and/or LDL at or above 100 mg/dL, and assigned them to pterostilbene 125 mg twice daily, pterostilbene 50 mg twice daily, pterostilbene 50 mg plus grape extract 100 mg twice daily, or matching placebo, for six to eight weeks.

The results cut both ways. Systolic blood pressure fell 7.8 mmHg in the high-dose group (P < 0.01).

Diastolic pressure fell 7.3 mmHg in the same arm (P < 0.001).

Participants not taking cholesterol medication showed a small reduction in BMI (−0.62 kg/m², P = 0.012).

But LDL cholesterol rose 17.1 mg/dL (P = 0.001) with pterostilbene on its own — an effect that was not seen in the group taking it alongside grape extract (P = 0.47).

The authors’ own stated conclusion was that pterostilbene increases LDL and reduces blood pressure in adults.

The second human data point is a randomized, double-blind, placebo-controlled safety study in the Journal of Evidence-Based Integrative Medicine (PMID 37671486), which gave 60 healthy adults a standardized Pterocarpus marsupium extract containing 90% pterostilbene at 200 mg per day and assessed short-term clinical safety.

Beyond those two, the literature is largely preclinical. A widely cited 2013 review by McCormack and colleagues surveys pterostilbene’s antioxidant activity across that earlier body of work (available via PubMed Central), but a review of mechanistic and animal studies is not evidence of a human outcome, and should not be read as one.

Two practical conclusions follow. First, studies suggest a blood pressure effect at 250 mg/day, which is a reason to take the dose seriously rather than casually. Second, the LDL signal means anyone managing cholesterol should speak to a qualified healthcare professional before starting, and should know that the one formulation where the effect did not appear also contained grape extract.

Which dose band actually suits you

Because capsule strength is the deciding variable, it is more useful to pick a dose band first and a brand second.

The 50 mg band — Jarrow and Swanson. This is where to start if you have never taken a stilbene, or if you are sensitive to supplements generally, or if you want to observe how you respond before committing. You will pay the most per milligram for that caution, which is a reasonable trade.

The 100 mg band — Double Wood and Vitality Pro. This matches the low-dose arm of the published trial and is the most defensible everyday choice for most people. Double Wood is the value option; Vitality Pro adds the grape extract and piperine combination at roughly double the cost per milligram.

The 250 mg band — ProHealth. This is the studied high dose, the one associated with the blood pressure reduction and with the LDL increase. It is a deliberate choice, not a default.

The 500 mg band — Eternal Elixir. Above any studied dose in a single capsule. This makes sense as a value purchase for people already established on pterostilbene who understand they are exceeding the researched range, and it is the reason we did not rank our own product first. If that band is not what you want, one of the five products above it on this page will serve you better.

Whichever band you choose, pterostilbene is fat-soluble, so it is generally taken with a meal containing some fat.

How pterostilbene fits into a wider longevity routine

This compound is rarely taken alone. It sits in the same polyphenol family as resveratrol, and most people running a longevity routine pair a stilbene with NAD+ precursor support rather than choosing between them. We compared the two stilbenes head to head in our NMN vs resveratrol comparison, and mapped the broader category in our guide to the best longevity supplements.

If you are building that kind of routine, the Eternal Elixir catalog was designed for it. Trans-Resveratrol 600mg at 98% purity is the natural companion to a pterostilbene capsule, and NMN 500mg or the NMN 1200mg Advanced Longevity Complex cover the NAD+ side. For autophagy-focused routines, Spermidine is the usual third addition. Buying these from one place is also the practical argument for range: single US shipment, one checkout, free shipping over $100.

If NAD+ support is the part of your routine you are least sure about, our roundup of the best NAD+ boosters and our nicotinamide riboside comparison both work through the options in the same cost-per-milligram way we used on this page.

Frequently asked questions about pterostilbene supplements

Is pterostilbene worth taking?

It depends on what you want from it. The published human evidence is limited to two randomized studies, and the stronger of the two found a meaningful blood pressure reduction at 250 mg/day alongside an increase in LDL cholesterol.

If blood pressure support is your interest and your cholesterol is well managed, there is a real, if small, evidence base. If you are looking for proven anti-aging or cognitive outcomes in humans, that evidence does not currently exist.

How much pterostilbene should I take a day?

The doses actually administered in published human research are 100 mg, 200 mg and 250 mg per day. Product labels across the US market range from 50 mg to 500 mg per capsule, which means many products sit outside the studied range in one direction or the other. Follow the physical product label, and speak with a qualified healthcare professional about what is appropriate for you.

What are the side effects of pterostilbene?

The most clearly documented effect from the randomized trial was an increase in LDL cholesterol of 17.1 mg/dL when taken on its own.

The randomized safety study at 200 mg/day assessed short-term clinical safety in 60 healthy adults. Anyone taking cholesterol medication, blood pressure medication or other prescriptions should check with a healthcare professional first.

What is the best pterostilbene supplement to buy in the US?

On our weighted scoring, ProHealth Pterostilbene Pro 250 ranked first because a single 250 mg capsule matches a studied dose at $0.19 per 100 mg.

Eternal Elixir Trans-Pterostilbene 500mg ranked second and offers the lowest cost per milligram at $0.14 per 100 mg. Double Wood at 100 mg is the best low-cost entry to a studied dose.

How much does a pterostilbene supplement cost in the US?

Bottle prices in this comparison ran from $8.19 to $64.99, but bottle price is misleading because capsule strengths differ tenfold.

Normalized to cost per 100 mg of trans-pterostilbene, the range was $0.14 to $0.73 — a 5.2x spread.

That normalized figure is the number worth comparing.

Is trans-pterostilbene different from pterostilbene?

Trans-pterostilbene is the specific isomer used in research and in essentially all quality supplements; “pterostilbene” on a label almost always refers to it. The useful thing to check is not the prefix but whether the label declares a specific milligram amount of the active compound, rather than a milligram amount of a plant extract that contains an unstated percentage of it.

Is a 500 mg pterostilbene capsule too strong?

It is above any dose used in published human research, where the maximum daily amount administered was 250 mg. That does not automatically make it unsafe, but it does mean you are outside the studied range, and a filled capsule cannot be reliably divided. If you want to stay within researched doses, choose a 100 mg or 250 mg capsule instead.

Where can I buy pterostilbene supplements in the US?

Double Wood, Jarrow and Swanson are stocked through major US retailers including Amazon, Target, Vitacost and Walmart. ProHealth and Eternal Elixir sell direct from their own US sites.

Vitality Pro ships to the US from the UK, which means longer delivery times. Buying direct from a brand generally gives you the freshest stock and the clearest returns path. Before you order, our guide to pterostilbene dosage and its evidence base sets out which daily amount the research actually supports.

The verdict: which pterostilbene supplement should you buy?

If you want the studied dose in one capsule: ProHealth Pterostilbene Pro 250, $29.15.

It matches the trial’s high-dose arm exactly and costs $0.19 per 100 mg.

If you are new to pterostilbene: Double Wood Pterostilbene 100 mg, $19.95. A studied dose, cheap enough to try, and stocked almost everywhere.

If you want to start smaller: Swanson Ultra at $8.19 for a one-month trial, or Jarrow at 50 mg if you want a longer runway to titrate.

If value per milligram is what matters and you already know pterostilbene suits you: Eternal Elixir Trans-Pterostilbene 500mg, $64.99 for 45,000 mg — $0.14 per 100 mg, the best figure on this page, with third-party lab testing and US shipping in 24 hours.

If you want the grape extract combination: Vitality Pro, $38.00, accepting slower delivery from the UK.

Whatever you choose, the number to carry with you is cost per 100 mg, not price per bottle. It is the single figure that reorders this entire category, and almost no product page will calculate it for you.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.