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Pycnogenol
Pycnogenol is worth considering if you have leg heaviness, swelling, or visible signs of chronic venous insufficiency, and the brand on the label matters more here than for almost any other supplement.
- Evidence
- Mixed Evidence
- Category
- Heart & Cardiovascular
- Best form
- Pycnogenol® (Horphag Research) - the trademarked French maritime pine bark extract standardized to 65-75% procyanidins; the form used in nearly every clinical trial
- Effective dose
- 100-200mg daily for general circulatory and skin support
- Lab tested
- 2 of 9 products
- Category
- Heart & Cardiovascular
- Best form
- Pycnogenol® (Horphag Research) - the trademarked French maritime pine bark extract standardized to 65-75% procyanidins; the form used in nearly every clinical trial
- Effective dose
- 100-200mg daily for general circulatory and skin support
- Lab tested
- 2 of 9 products
Key takeaways
- →Strongest evidence is for chronic venous insufficiency (leg edema, heaviness) at 150-300mg/day — Cesarone 2010 and the 2020 Cochrane update both point in that direction, though much of the literature comes from one Italian lab.
- →The brand on the label matters: nearly all trials use Pycnogenol® (Horphag Research), standardized to 65-75% procyanidins. Generic pine bark extract has similar chemistry but is not the form that was tested.
- →Cardiovascular signals beyond venous insufficiency (endothelial function, blood pressure) are smaller but real — Enseleit 2012 in EHJ is the rare large independent trial.
- →Skin, cognitive, and ADHD claims are early-signal at best and rest on small single-lab trials; treat as exploratory rather than settled.
What Is Pycnogenol?
Pycnogenol is worth considering if you have leg heaviness, swelling, or visible signs of chronic venous insufficiency, and the brand on the label matters more here than for almost any other supplement. The published trials almost exclusively use Pycnogenol®, the trademarked French maritime pine bark extract from Horphag Research that is standardized to 65-75% procyanidins. Generic "pine bark extract" sold at lower prices may have similar chemistry on paper but does not have the same trial data, the same standardization, or the same lot-to-lot consistency. Treat Pycnogenol and generic pine bark as different products even when the price difference is tempting.
The strongest single signal is chronic venous insufficiency. Cesarone and Belcaro's 2010 controlled study in Phytomedicine showed meaningful improvement in leg edema and CVI symptoms at 150-300mg/day, and several earlier Cesarone trials in Angiology found similar venous tone and microangiopathy benefits. The 2020 Robertson Cochrane review (Pine bark extract for chronic disorders, updating the 2012 Schoonees review) was more cautious, concluding that current trials are too small and too heterogeneous to draw firm conclusions but acknowledging consistent directional benefit for CVI. So the venous data is genuinely promising at the Tier 2/3 boundary, but it is also concentrated in one Italian research group, which is the central caveat for the entire Pycnogenol literature.
Cardiovascular signals beyond CVI are smaller. Enseleit 2012 in the European Heart Journal — a rare large independent trial — found 200mg/day Pycnogenol improved flow-mediated dilation in patients with stable coronary artery disease, with no effect on inflammation markers or platelet function. Modest blood pressure reductions have been reported, particularly in hypertensives on antihypertensive therapy. Liu 2004 in Life Sciences showed adjunctive benefit on glycemic control in type 2 diabetes at 100mg/day. These are interesting but smaller signals.
Skin photoaging and pigmentation: Furumura 2012 (using Flavangenol, a closely related but distinct French maritime pine bark extract, not Pycnogenol) showed reduced UV-induced pigmentation over 12 weeks. The Belcaro group has reported Pycnogenol-specific elasticity and hydration improvements at 100-150mg/day, though again from the same lab.
Cognitive function in healthy students (Luzzi 2011) and ADHD in children (Trebatická 2006) have small positive trials but no independent replication at scale. Asthma adjuvant trials are similarly small.
Practical bottom line: 100-150mg/day of genuine Pycnogenol® is a reasonable trial if your goal is leg comfort, healthy circulation, or skin elasticity. The trial data is real but heavily dependent on one research group, and generic pine bark extract is not a clean substitute despite similar chemistry. Do not expect dramatic effects and do not buy on dose alone — the brand on the label is doing real work here.
Does It Work? The Evidence
How A-F grades workChronic venous insufficiency (leg edema, heaviness, venous tone)
Cesarone 2010 Phytomedicine RCT (PMID 20579863, n=156, 150-300mg/day): significant improvement in CVI signs and symptoms; Cesarone 2006 Angiology (PMID 17067979) rapid relief in venous microangiopathy; Robertson 2020 Cochrane (PMID 32990945) updated review found consistent CVI direction but low-quality evidence
Endothelial function and flow-mediated dilation
Enseleit 2012 European Heart Journal (PMID 22240497, n=23, 200mg/day x 8 weeks, double-blind crossover): significant improvement in flow-mediated dilation in stable coronary artery disease, no change in inflammation markers - a rare independent (Swiss) Pycnogenol RCT
Blood pressure reduction in hypertensives
Multiple small RCTs in mild-to-moderate hypertension at 100-200mg/day suggest modest systolic reductions, often as adjunct to standard antihypertensives; effects most consistent in trials from the Belcaro / Cesarone group
Type 2 diabetes glycemic control (adjunct)
Liu 2004 Life Sciences (PMID 15363656, n=77, 100mg/day x 12 weeks): significant reduction in fasting glucose and HbA1c as adjunct to standard care in type 2 diabetes
Skin elasticity, hydration, and photoaging
Furumura 2012 Clin Interv Aging (PMID 22956863, n=112, 12 weeks, 100mg/day): improved photoaged skin clinical scores - note this trial used Flavangenol, a related but distinct pine bark extract, not Pycnogenol itself; Belcaro group reports separate elasticity gains with Pycnogenol
Cognitive function in healthy young adults
Luzzi 2011 Panminerva Medica (PMID 22108481, n=53 students, 100mg/day x 8 weeks): significant improvement in attention, working memory, and exam performance vs. control - single Belcaro-group trial, no independent replication
ADHD symptoms in children (adjunct)
Trebatická 2006 Eur Child Adolesc Psychiatry (PMID 16699814, n=61, 1mg/kg/day x 4 weeks): reduced hyperactivity, improved attention and visual-motor coordination vs. placebo in children with ADHD - small, single-site trial
Asthma symptom control (adjunct)
Small Belcaro-group adjuvant trials report reduced inhaled steroid use and symptom score improvement; no large independent RCT to date
| Grade | Claimed Benefit | Key Studies | Our Verdict |
|---|---|---|---|
| B | Chronic venous insufficiency (leg edema, heaviness, venous tone) | Cesarone 2010 Phytomedicine RCT (PMID 20579863, n=156, 150-300mg/day): significant improvement in CVI signs and symptoms; Cesarone 2006 Angiology (PMID 17067979) rapid relief in venous microangiopathy; Robertson 2020 Cochrane (PMID 32990945) updated review found consistent CVI direction but low-quality evidence | Early Signal |
| B | Endothelial function and flow-mediated dilation | Enseleit 2012 European Heart Journal (PMID 22240497, n=23, 200mg/day x 8 weeks, double-blind crossover): significant improvement in flow-mediated dilation in stable coronary artery disease, no change in inflammation markers - a rare independent (Swiss) Pycnogenol RCT | Early Signal |
| C | Blood pressure reduction in hypertensives | Multiple small RCTs in mild-to-moderate hypertension at 100-200mg/day suggest modest systolic reductions, often as adjunct to standard antihypertensives; effects most consistent in trials from the Belcaro / Cesarone group | Early Signal |
| C | Type 2 diabetes glycemic control (adjunct) | Liu 2004 Life Sciences (PMID 15363656, n=77, 100mg/day x 12 weeks): significant reduction in fasting glucose and HbA1c as adjunct to standard care in type 2 diabetes | Early Signal |
| C | Skin elasticity, hydration, and photoaging | Furumura 2012 Clin Interv Aging (PMID 22956863, n=112, 12 weeks, 100mg/day): improved photoaged skin clinical scores - note this trial used Flavangenol, a related but distinct pine bark extract, not Pycnogenol itself; Belcaro group reports separate elasticity gains with Pycnogenol | Early Signal |
| C | Cognitive function in healthy young adults | Luzzi 2011 Panminerva Medica (PMID 22108481, n=53 students, 100mg/day x 8 weeks): significant improvement in attention, working memory, and exam performance vs. control - single Belcaro-group trial, no independent replication | Not There Yet |
| C | ADHD symptoms in children (adjunct) | Trebatická 2006 Eur Child Adolesc Psychiatry (PMID 16699814, n=61, 1mg/kg/day x 4 weeks): reduced hyperactivity, improved attention and visual-motor coordination vs. placebo in children with ADHD - small, single-site trial | Not There Yet |
| C | Asthma symptom control (adjunct) | Small Belcaro-group adjuvant trials report reduced inhaled steroid use and symptom score improvement; no large independent RCT to date | Not There Yet |
How to Choose: Forms, Doses & What Matters
Clinical dose: 100-200mg daily for general circulatory and skin support; 150-360mg daily (typically split) for chronic venous insufficiency and leg edema trials
Best forms: Pycnogenol® (Horphag Research) - the trademarked French maritime pine bark extract standardized to 65-75% procyanidins; the form used in nearly every clinical trial, Generic pine bark extract (Pinus pinaster or Pinus massoniana) - similar chemistry but not standardized to Pycnogenol's specs and not the form tested in the published RCTs, Mirtogenol® (Pycnogenol + bilberry combination) - branded combo used in Belcaro group ocular-pressure and microcirculation trials
Most adult trials use 100-200mg per day, taken either as a single dose or split twice daily with meals. Chronic venous insufficiency trials typically use 150-300mg/day split into two or three doses; the Cesarone studies dosed 50-100mg three times daily. Endothelial-function and blood-pressure trials usually use 100-200mg/day. Skin trials use 75-150mg/day. Take with food to reduce mild GI upset; absorption is reasonable either with or without food. Effects on venous symptoms typically take 4-8 weeks; endothelial and skin endpoints in published trials read out at 8-12 weeks. There is no clear benefit to dosing above 360mg/day and most trials cap there.
Who Should Take Pycnogenol?
Adults with chronic venous insufficiency symptoms — leg heaviness, ankle swelling, varicose-vein discomfort — looking for an adjunct to compression and lifestyle measures. People with mild hypertension already on standard care who want a complementary dietary intervention. Adults interested in supporting healthy endothelial function and circulation, particularly those with cardiovascular risk factors. People interested in skin elasticity and hydration support, with the caveat that the data is smaller than the marketing suggests. Anyone using Pycnogenol should buy genuine Pycnogenol® (Horphag Research licensed), not generic pine bark extract, because the trial data does not transfer cleanly between forms.
Who Should Avoid It?
Not for everyone
Side Effects & Safety
Product Scores
9 products scored on dosing accuracy, third-party testing, cost per effective dose, and label transparency.
The Scorecard: 9 Products Compared
Pycnogenol 100mg, 120 Veggie Capsules
Healthy Origins
$45.99 ÷ 121 days at 100mg/day (1 serving × 100mg)
Healthy Origins is one of the longest-running US Pycnogenol licensees and is consistently the cheapest per-day genuine-Pycnogenol option in the 100mg category
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pycnogenol French Maritime Pine Bark Extract 100mg, 60 Capsules
Life Extension$30.00 ÷ 60 days at 100mg/day (1 serving × 100mg)
Reasonable swap for Healthy Origins if you already shop Life Extension and want their testing program; same active ingredient at a modest premium
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pycnogenol 100mg, 60 Capsules
Pure Encapsulations$42.00 ÷ 60 days at 100mg/day (1 serving × 100mg)
Pick this if hypoallergenic excipients and Pure Encapsulations' QA program matter more than per-day cost; the active ingredient is identical to the cheaper licensed-Pycnogenol SKUs
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pycnogenol 100mg with Amla, 60 Veg Capsules
NOW Foods$32.99 ÷ 60 days at 100mg/day (1 serving × 100mg)
The amla addition is a sensible antioxidant co-formulation that does not change the Pycnogenol dose; pick this if you want a clean NOW SKU and do not mind the amla extra
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pycnogenol 100mg, 30 Vegetable Capsules
Solgar$21.99 ÷ 30 days at 100mg/day (1 serving × 100mg)
A solid Pycnogenol SKU if you already buy Solgar elsewhere, but the small bottle makes the per-day economics worse than the larger Healthy Origins format
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pycnogenol 100mg, 30 Vegan Capsules
Country Life
$22.50 ÷ 30 days at 100mg/day (1 serving × 100mg)
A reasonable Pycnogenol option if Country Life is already your house brand, but the small bottle and per-day cost are hard to justify against the larger Healthy Origins format
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pycnogenol 60mg with Acerola & Rutin, 50 Veg Capsules
NOW Foods$19.99 ÷ 50 days at 60mg/day (1 serving × 60mg)
Useful as a flexible starter SKU if you want to titrate up from 60mg, but if you already know you want 100mg/day, the 100mg NOW or Healthy Origins SKU is better economics
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pycnogenol Premium Blend 50mg, 30 Vegan Tablets
Nature's Way
$18.99 ÷ 30 days at 50mg/day (1 serving × 50mg)
A low-dose, small-bottle SKU that does not scale well to the published clinical doses; included for completeness rather than as a value pick
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Pine Bark Extract 300mg (20:1, standardized to 95% Proanthocyanidins), 180 Capsules
Nutricost$24.95 ÷ 178 days at 300mg/day (1 serving × 300mg)
Included for transparency: this is the kind of generic pine bark extract that looks chemically similar to Pycnogenol on the label but is not the form tested in any of the published RCTs. If your goal is evidence-based supplementation, pay the premium for a licensed Pycnogenol® SKU; if you just want a cheap antioxidant and accept the loss of trial backing, this is a reasonable budget pick
Prices checked 2026-05-17. Cost shown is per clinically effective daily dose, not per pill.
Full Comparison
| Category | Pycnogenol 100mg, 120 Veggie Capsules Healthy Origins | Pycnogenol French Maritime Pine Bark Extract 100mg, 60 Capsules Life Extension | Pycnogenol 100mg, 60 Capsules Pure Encapsulations | Pycnogenol 100mg with Amla, 60 Veg Capsules NOW Foods | Pycnogenol 100mg, 30 Vegetable Capsules Solgar | Pycnogenol 100mg, 30 Vegan Capsules Country Life | Pycnogenol 60mg with Acerola & Rutin, 50 Veg Capsules NOW Foods | Pycnogenol Premium Blend 50mg, 30 Vegan Tablets Nature's Way | Pine Bark Extract 300mg (20:1, standardized to 95% Proanthocyanidins), 180 Capsules Nutricost |
|---|---|---|---|---|---|---|---|---|---|
| Brand Score | 91/100Winner | 89/100 | 89/100 | 86/100 | 85/100 | 83/100 | 80/100 | 74/100 | 68/100 |
| Dosing & Form | 25/25Winner | 25/25 | 25/25 | 25/25 | 25/25 | 25/25 | 20/25 | 17/25 | 20/25 |
| Purity | 19/25 | 20/25 | 22/25Winner | 18/25 | 18/25 | 17/25 | 18/25 | 17/25 | 14/25 |
| Value | 24/25Winner | 21/25 | 19/25 | 22/25 | 19/25 | 18/25 | 21/25 | 19/25 | 23/25 |
| Transparency | 23/25Winner | 23/25 | 23/25 | 21/25 | 23/25 | 23/25 | 21/25 | 21/25 | 11/25 |
| Cost/Day | $0.38 | $0.50 | $0.70 | $0.55 | $0.73 | $0.75 | $0.40 | $0.63 | $0.14Winner |
| Dose/Serving | 100mg | 100mg | 100mg | 100mg | 100mg | 100mg | 60mg | 50mg | 300mg |
| Form | Pycnogenol® French Maritime Pine Bark Extract (vegan capsule) | Pycnogenol® French Maritime Pine Bark Extract (vegetarian capsule) | Pycnogenol® French Maritime Pine Bark Extract (vegetarian capsule) | Pycnogenol® French Maritime Pine Bark Extract with Amla (vegetarian capsule) | Pycnogenol® French Maritime Pine Bark Extract (vegetable capsule) | Pycnogenol® French Maritime Pine Bark Extract (vegan capsule) | Pycnogenol® with Acerola and Rutin (vegetarian capsule) | Pycnogenol® with Rosemary Leaf (vegan tablet) | Generic Pine Bark Extract 20:1 (vegetarian capsule) |
| Third-Party Tested | No | ✓ Yes | ✓ Yes | No | No | No | No | No | No |
| Proprietary Blend | No | No | No | No | No | No | No | No | No |
Frequently Asked Questions
Is Pycnogenol the same as generic pine bark extract?
Chemically they are similar — both are extracts of pine bark rich in procyanidins and other polyphenols — but practically they are not interchangeable. Pycnogenol® is a specific trademarked extract from French maritime pine (Pinus pinaster) made by Horphag Research, standardized to 65-75% procyanidins, with patented extraction and consistent lot-to-lot specifications. Virtually all of the clinical trial evidence — Cesarone, Belcaro, Enseleit, Liu, Trebatická — uses Pycnogenol® specifically. Generic pine bark extract from other species or different extraction methods has similar chemistry on paper but does not have the same RCT support and lot-to-lot consistency varies widely. If you are buying for evidence-based reasons, look for the Pycnogenol® trademark on the label.
What dose of Pycnogenol should I take?
It depends on your goal. For general circulatory and antioxidant support, 100-150mg/day is the most common range and matches the lower end of published trials. For chronic venous insufficiency and leg edema, the Cesarone trials used 150-300mg/day, often split into three 50-100mg doses. For endothelial function and blood pressure, the Enseleit and Belcaro studies used 100-200mg/day. For skin elasticity, 75-150mg/day. There is no convincing evidence that doses above 360mg/day add benefit, and most trials cap at or below that ceiling.
How is Pycnogenol different from grape seed extract?
Both are sources of oligomeric proanthocyanidins (OPCs), and both have antioxidant and vasoactive activity. They are often discussed together as 'OPC supplements.' The differences: Pycnogenol comes from French maritime pine bark and has a specific patented extraction; grape seed extract comes from grape seeds and has its own family of trials. Pycnogenol has more venous-insufficiency and endothelial-function data; grape seed extract has more blood-pressure and lipid data. They are not interchangeable in clinical trials even though they overlap in chemistry. If a specific outcome matters to you, follow the form that was studied for that outcome.
How long until Pycnogenol works for leg swelling?
Most CVI trials run 4-12 weeks before reading out. The Cesarone 2006 'rapid relief' study reported symptom changes within a few weeks, but most patients in the published literature took 4-8 weeks at 150-300mg/day to see meaningful reductions in leg circumference, edema, and symptom scores. If you do not notice a difference at 8 weeks of consistent dosing, it is unlikely to be a major contributor for you, and the underlying venous disease deserves a vascular workup independent of any supplement.
Is the Belcaro / Cesarone trial concentration a real problem?
It is the central caveat for the entire Pycnogenol literature, and the Cochrane reviewers flagged it. The Belcaro / Cesarone group at G. D'Annunzio University in Italy has produced a large fraction of the positive Pycnogenol trials, often with industry funding from Horphag Research and small to mid-size sample sizes. Their work is not necessarily wrong, but the absence of large independent replications outside this group is a real limitation. The exceptions — like Enseleit 2012 in EHJ from a Swiss team — are valuable precisely because they are independent. Treat the venous-insufficiency signal as 'consistent but mostly from one lab' and the cognitive / skin / ADHD signals as 'small single-lab pilots.'
Can I take Pycnogenol with my blood pressure medication?
Most Pycnogenol blood-pressure trials were adjunct studies — patients stayed on their existing antihypertensives and added Pycnogenol. The interaction direction is additive: Pycnogenol may modestly lower blood pressure further, which is usually the goal but can cause symptomatic lows in some people. If you are on multiple antihypertensives or your blood pressure is well-controlled, talk to your prescriber before adding 100-200mg/day, and monitor at home for the first month.
Is Pycnogenol safe long-term?
Short-to-medium term safety up to 6 months at 100-360mg/day looks good in the published RCTs, with mostly mild GI side effects and no serious adverse events. Long-term safety beyond 12 months has not been rigorously studied in independent trials. The theoretical concerns are antiplatelet activity (relevant if you are on blood thinners) and immune modulation (relevant in autoimmune disease or transplant patients). For a generally healthy adult taking 100-150mg/day for venous or skin support, the safety profile is reassuring; for indefinite high-dose use, periodic reassessment with your physician is sensible.
Related Reading
Sources
- Cesarone MR, Belcaro G, Rohdewald P, et al. Improvement of signs and symptoms of chronic venous insufficiency and microangiopathy with Pycnogenol: a prospective, controlled study. Phytomedicine. 2010;17(11):835-839.
- Cesarone MR, Belcaro G, Rohdewald P, et al. Rapid relief of signs/symptoms in chronic venous microangiopathy with Pycnogenol: a prospective, controlled study. Angiology. 2006;57(5):569-576.
- Robertson NU, Schoonees A, Brand A, Visser J. Pine bark (Pinus spp.) extract for treating chronic disorders. Cochrane Database Syst Rev. 2020;9:CD008294.
- Schoonees A, Visser J, Musekiwa A, Volmink J. Pycnogenol® (extract of French maritime pine bark) for the treatment of chronic disorders. Cochrane Database Syst Rev. 2012;(2):CD008294.
- Enseleit F, Sudano I, Périat D, et al. Effects of Pycnogenol on endothelial function in patients with stable coronary artery disease: a double-blind, randomized, placebo-controlled, cross-over study. Eur Heart J. 2012;33(13):1589-1597.
- Liu X, Wei J, Tan F, Zhou S, Würthwein G, Rohdewald P. Antidiabetic effect of Pycnogenol French maritime pine bark extract in patients with diabetes type II. Life Sci. 2004;75(21):2505-2513.
- Furumura M, Sato N, Kusaba N, Takagaki K, Nakayama J. Oral administration of French maritime pine bark extract (Flavangenol®) improves clinical symptoms in photoaged facial skin. Clin Interv Aging. 2012;7:275-286.
- Luzzi R, Belcaro G, Zulli C, et al. Pycnogenol® supplementation improves cognitive function, attention and mental performance in students. Panminerva Med. 2011;53(3 Suppl 1):75-82.
- Trebatická J, Kopasová S, Hradecná Z, et al. Treatment of ADHD with French maritime pine bark extract, Pycnogenol. Eur Child Adolesc Psychiatry. 2006;15(6):329-335.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products discussed on this page are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.