Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Pine Bark Extract 150 mg Ingredients & Drug Interactions

by tnvitamins

Pine Bark Extract 150 mg label
See full label image
Tablet Or Pill Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Pine Bark Extract 150 mg against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Pine Bark Extract 150 mg is a dietary supplement by tnvitamins with 1 active ingredient. Its ingredients are commonly taken for circulation and vein health, antioxidant support, skin health and aging.Based on those ingredients, 327 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Pine bark extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Pine Bark Extract 150 mg by tnvitamins

Ask about any prescription or over-the-counter medication and we check it for interactions with Pine Bark Extract 150 mg by tnvitamins — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Pine Bark Extract 150 mg by tnvitamins

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: maritime pine bark extract at 150 mg per tablet. Pine bark extract is a concentrated source of polyphenols (plant compounds with antioxidant and anti-inflammatory properties).

The tablet also contains several inactive ingredients — dicalcium phosphate, microcrystalline cellulose, stearic acid, croscarmellose sodium, silicon dioxide, and magnesium stearate — which help form and stabilize the tablet.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed

This product doesn't appear to be marketed for a specific use, so we graded Maritime Pine's overall clinical evidence instead.

Moderate

Some clinical evidence supports Maritime Pine for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Asthma — rated "Possibly Effective" (Natural Medicines).
  • On file: Chronic venous insufficiency (CVI) — rated "Possibly Effective" (Natural Medicines).
  • On file: Osteoarthritis — rated "Possibly Effective" (Natural Medicines).

Pine bark extract is possibly effective for osteoarthritis and chronic venous insufficiency (CVI, a condition where blood pools in the legs). The evidence for these uses comes from clinical studies, though more research is ongoing.

For high cholesterol (hyperlipidemia), the current evidence suggests it's probably ineffective. We don't have established effectiveness data for asthma in our records.

The evidence, ingredient by ingredient Maritime Pine

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Maritime pine bark extract is generally well tolerated in studies, though long-term safety hasn't been fully established. The most common side effects when taken by mouth are stomach upset, dizziness, and vertigo (a spinning sensation).

Headache and chest pain have been reported rarely, though a direct link to the extract wasn't clear in those cases. The safety data advises against use during pregnancy and breastfeeding because there isn't enough information to know it's safe in those situations.

If you're pregnant, planning to become pregnant, or breastfeeding, talk with your pharmacist or doctor before starting this product.

Side effects, ingredient by ingredient Maritime Pine

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Maritime Pine.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications.
  • For scale: 327 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, check if you're on blood thinners or antiplatelet drugs (Moderate interaction — increased bleeding risk), diabetes medications (Moderate — risk of low blood sugar), or immunosuppressant drugs (Moderate — may weaken their effect). Use the medication search tool on this page with your exact prescription names.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

Pine bark extract may be worth considering if you have osteoarthritis or chronic venous insufficiency and want a plant-based option. If you take blood thinners, diabetes drugs, or immunosuppressants, check with your pharmacist first — the interactions are real and may need monitoring.

Talk to your pharmacist before starting, especially if you're on any prescription medications.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Apr 23, 2020.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Pine Bark Extract 150 mg, straight from the product label.

Brand tnvitamins
Barcode (UPC) 095234229204
Net contents 60 Tablet(s)
Market status On market
Date entered into DSLD Apr 23, 2020
DSLD ID 217664
Product type Botanical
Supplement form Tablet Or Pill
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Pine Bark Extract 150 mg by tnvitamins, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Tablet(s)
Maximum serving Sizes:
1 Tablet(s)
Servings per container
60
UPC/BARCODE
095234229204
IngredientAmount% DV
Pine bark extract150 mg--

Other ingredients: Dicalcium Phosphate, Microcrystalline Cellulose, Stearic Acid, Croscarmellose Sodium, Silicon Dioxide, Magnesium Stearate

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula

Standardized to contain 95% OPC (oligomeric proanthocyanidins)

The group of antioxidants found in pine bark extract are known as oligomeric proanthocyanidins, or OPCs for short.

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement, take one (1) tablet per day with a meal, or as directed by a health care professional.

FDA Disclaimer Statement

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.

Precautions

Caution: Pregnant or lactating women should consult a doctor before use.

If you are under medical supervision, please consult a doctor before use. Discontinue use and consult a doctor if any adverse reactions occur.

Keep out of reach of children.

Storage

Store in a cool, dry place.

General Statements

To reorder www.tnvitamins.com 1-800-645-4446

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Pine Bark Extract 150 mg by tnvitamins label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Pine Bark Extract 150 mg label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Pine Bark Extract 150 mg by tnvitamins

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Tablet(s) Dosage formTablet Or Pill Servings per container60 Amounts shown are per serving.

Pine bark extract

Interacts with
327 drugs
150 mg per serving Form: Oligomeric Proanthocyanidins

Maritime pine bark extract (often sold as Pycnogenol) is a plant-based antioxidant most studied for circulation, vein, and skin health. Some research...

Pine bark extract monograph & interactions

Other (inactive) ingredients: Dicalcium Phosphate, Microcrystalline Cellulose, Stearic Acid, Croscarmellose Sodium, Silicon Dioxide, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Pine Bark Extract 150 mg by tnvitamins Drug Interactions

Want to check YOUR meds against Pine Bark Extract 150 mg?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
327Drugs
327 Moderate

Ingredients driving the most interactions

Pine bark extract 327

Individual Drug Interactions

The ingredients in Pine Bark Extract 150 mg interact with 327 drugs. Click any drug to see the details.

1 of the 1 ingredient in Pine Bark Extract 150 mg interact with drugs. Each result below shows which ingredient is responsible. Pine bark extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Pine Bark Extract 150 mg with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Pine bark extract3 drug types · 327 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, maritime pine bark extract might increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
Clinical research suggests that maritime pine bark extract inhibits platelet aggregation. However, the clinical significance of this effect is unclear.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, maritime pine bark extract might increase the risk of hypoglycemia when used with antidiabetes drugs.
One clinical study shows that maritime pine bark extract decreases blood sugar in patients with diabetes being treated with antidiabetes agents. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence B
Immunosuppressants

Theoretically, maritime pine bark extract might decrease the effectiveness of immunosuppressant therapy.
In vitro and animal research suggests that maritime pine bark extract has immunostimulant activity. This effect has not been reported in humans.

Likelihood Possible Evidence D
Pine bark extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Pine Bark Extract 150 mg, from the product label.

tnvitamins

See all tnvitamins products
Name
Total Nutrition, Inc.
City
Farmingdale
State
NY
ZipCode
11735
Phone Number
1-800-645-4446
Web Address
www.tnvitamins.com
Pharmacist Counseling Corner

Pine Bark Extract 150 mg by tnvitamins: Common Questions

Does Pine Bark Extract 150 mg by tnvitamins interact with any medications?
Yes. Based on its ingredients, Pine Bark Extract 150 mg has a known interaction with 327 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Pine Bark Extract 150 mg contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What is pine bark extract used for?
The evidence shows it's possibly effective for osteoarthritis and chronic venous insufficiency — a condition where blood pools in your legs and causes swelling or discomfort. For high cholesterol, it appears ineffective based on current research.
Can I take this while pregnant or breastfeeding?
There isn't enough safety data either way. The safety information advises against it during pregnancy and breastfeeding. Talk with your pharmacist or doctor to decide what's right for your situation.
What are the most common side effects?
Stomach upset, dizziness, and vertigo (spinning sensation) are the most common side effects reported. Headache has also been noted. Most people tolerate it well, though long-term safety data is limited.
Does pine bark extract interact with blood thinners?
Yes — it may increase your bleeding risk because it can slow blood clotting. This is a Moderate interaction, so if you take warfarin, aspirin, or another blood thinner, you need to check with your pharmacist before starting this product.
Can I take this with diabetes medication?
Not without checking first. Pine bark extract may lower blood sugar, so combining it with diabetes drugs raises the risk of low blood sugar (hypoglycemia). If you take diabetes medication, your doctor or pharmacist may want to monitor your blood glucose closely.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Pine Bark Extract 150 mg is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Pine Bark Extract 150 mg label
Go deeper

The Full Monographs Behind Pine Bark Extract 150 mg’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Maritime Pine

Interacts with 327 drugs

Maritime pine bark extract (often sold as Pycnogenol) is a plant-based antioxidant most studied for circulation, vein, and skin health. Some research is promising, but many studies are small...

Read the full Maritime Pine monograph →
Sources

Sources & How We Checked

Pine Bark Extract 150 mg's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 14 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Maritime Pine 14 references
  1. Rice-Evans CA, Packer L, eds. Flavonoids in Health and Disease. Manhattan, NY: Marcel Dekker, Inc., 1998.
  2. Liu FJ, Zhang YX, Lau BH. Pycnogenol enhances immune and haemopoietic functions in senescence-accelerated mice. Cell Mol Life Sci 1998;54:1168-72. PubMed
  3. Putter M, Grotemeyer KH, Wurthwein G, et al. Inhibition of smoking-induced platelet aggregation by aspirin and pycnogenol. Thromb Res 1999;95:155-61. PubMed
  4. Kohama T, Inoue M. Pycnogenol alleviates pain associated with pregnancy. Phytother Res 2006;20:232-4.
  5. Liu X, Zhou HJ, Rohdewald P. French maritime pine bark extract pycnogenol dose-dependently lowers glucose in type 2 diabetic patients (letter). Diabetes Care 2004;27:839. PubMed
  6. Liu X, Wei J, Tan F, et al. Antidiabetic effect of Pycnogenol French maritime pine bark extract in patients with diabetes type II. Life Sci 2004;75:2505-13. PubMed
  7. Wilson D, Evans M, Guthrie N et al. A randomized, double-blind, placebo-controlled exploratory study to evaluate the potential of pycnogenol for improving allergic rhinitis symptoms. Phytother Res 2010;24:1115-9.
  8. Araghi-Niknam, M., Hosseini, S., Larson, D., Rohdewald, P., and Watson, R. R. Pine bark extract reduces platelet aggregation. Integr.Med. 3-21-2000;2(2):73-77. PubMed
  9. Trebaticka, J., Kopasova, S., Hradecna, Z., Cinovsky, K., Skodacek, I., Suba, J., Muchova, J., Zitnanova, I., Waczulikova, I., Rohdewald, P., and Durackova, Z. Treatment of ADHD with French maritime pine bark extract, Pycnogenol. Eur.Child Adolesc.Psychi PubMed
  10. Suzuki, N., Uebaba, K., Kohama, T., Moniwa, N., Kanayama, N., and Koike, K. French maritime pine bark extract significantly lowers the requirement for analgesic medication in dysmenorrhea: a multicenter, randomized, double-blind, placebo-controlled study
  11. Cisar, P., Jany, R., Waczulikova, I., Sumegova, K., Muchova, J., Vojtassak, J., Durackova, Z., Lisy, M., and Rohdewald, P. Effect of pine bark extract (Pycnogenol) on symptoms of knee osteoarthritis. Phytother.Res. 2008;22(8):1087-1092.
  12. Enseleit, F., Sudano, I., Periat, D., Winnik, S., Wolfrum, M., Flammer, A. J., Frohlich, G. M., Kaiser, P., Hirt, A., Haile, S. R., Krasniqi, N., Matter, C. M., Uhlenhut, K., Hogger, P., Neidhart, M., Luscher, T. F., Ruschitzka, F., and Noll, G. Effects
  13. Schoonees, A., Visser, J., Musekiwa, A., and Volmink, J. Pycnogenol(R) (extract of French maritime pine bark) for the treatment of chronic disorders. Cochrane.Database.Syst.Rev. 2012;4:CD008294.
  14. Wang S, Tan D Zhao Y et al. The effect of pycnogenol on the microcirculation, platelet function and ischemic myocardium in patients with coronary artery diseases. Eur Bull Drug Res 1999;7:19-25.

See these in context on the Maritime Pine monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team