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Dietary supplement

Long Pepper Ingredients & Drug Interactions

by Herbal Terra

Long Pepper label
See full label image
Liquid 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 Long Pepper 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

Long Pepper is a dietary supplement by Herbal Terra with 1 active ingredient. Its ingredients are commonly taken for digestive upset, respiratory and cough complaints, boosting absorption of other supplements.Based on those ingredients, 896 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are certified organic Long Pepper (Piper longum) dried whole pepper liquid extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Long Pepper by Herbal Terra

Ask about any prescription or over-the-counter medication and we check it for interactions with Long Pepper by Herbal Terra — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Long Pepper by Herbal Terra

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 Aug 20, 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: certified organic Long Pepper (Piper longum) dried whole pepper liquid extract. Long pepper is a traditional spice related to black pepper; its key active compound is piperine, which research shows can affect how your body absorbs and processes other substances.

Does it work?

Couldn't assess
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
Not assessable

This is a single-ingredient Indian Long Pepper product and its label doesn't state a use — see Indian Long Pepper's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence we hold does not establish that Long Pepper is effective for the conditions listed — bronchitis, asthma, cancer, cardiovascular disease, and liver disease all show insufficient reliable evidence to rate its benefit. If you're considering this supplement for a specific health goal, talk with your doctor or pharmacist about what the current research actually supports.

The evidence, ingredient by ingredient Indian Long Pepper

How safe is it?

Some data gaps
Safety Information · database check
Some gaps

Safety data exists for these ingredients, but with some important gaps.

Why this rating?
  • We hold adverse-effect (side-effect) data for 0 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.

Long Pepper is likely fine as a food spice, but concentrated liquid supplements like this one lack strong safety data, and piperine can affect how your body absorbs other substances — a reason to be cautious if you're on medications. During pregnancy, medicinal amounts are not well studied and are traditionally discouraged, so avoid supplement doses.

There isn't enough safety information for medicinal amounts while breastfeeding either, so avoid it then too.

Side effects, ingredient by ingredient Indian Long Pepper

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 — Indian Long Pepper.
  • 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: 897 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 with your own doctor or pharmacist if you take blood thinners or antiplatelet drugs, propranolol or other heart and blood pressure medications that are CYP3A4 substrates, drugs processed by P-glycoprotein, theophylline, cyclosporine, pentobarbital, or diabetes medications. Moderate interactions are documented for all of these.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and some safety-information gaps remain.

If you're not on medications and you're not pregnant or breastfeeding, Long Pepper liquid extract is likely tolerated without major issues. But if you take any prescription drugs — especially blood thinners, heart medications, diabetes treatments, or theophylline — you need to check your exact medications with your doctor or pharmacist before starting.

The interaction potential is real and worth sorting out in advance.

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 Sep 25, 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 Long Pepper, straight from the product label.

Brand Herbal Terra
Barcode (UPC) 0617503382665
Net contents 4 Fluid Ounce(s); 120 mL
Market status On market
Date entered into DSLD Sep 25, 2020
DSLD ID 235072
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Organic, Gluten Free
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 Long Pepper by Herbal Terra, 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 mL
Maximum serving Sizes:
1 mL
Servings per container
120
UPC/BARCODE
0617503382665
IngredientAmount% DV
certified organic Long Pepper (Piper longum) dried whole pepper liquid extract970 mg--

Other ingredients: Menstruum

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.
Suggested/Recommended/Usage/Directions

Direction Shake well before use. Adults take up to 30 drops (1 mL, one full squeeze of the dropper bulb) in 3-4 fl. oz of juice or water up to 4 times a day. We recommend to seek expert medical advice before taking this or any other herbal supplements.

FDA Disclaimer Statement

Notice This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease.

Formulation

Manufactured in the USA in an FDA registered facility

Alcohol free

Dried herb/menstruum ratio: 1:3 Expertly extracted Laboratory tested 330 mg/1 mL Premium product Alcohol-free liquid herbal extract

Non GMO

No artificial ingredients, GMO, gluten, color additives, fillers, preservatives or binders. Natural Gluten Free

Precautions

Caution May have contraindications.

Do not use if you are allergic to any ingredients.

Consult a physician before using during pregnancy, if nursing, or if you are on any medications.

Keep out of the reach of children.

Storage

Store in a cool, dry, dark place.

Formula

Piper longum

FDA Statement of Identity

Herbal Supplement

Seals/Symbols

Made in USA Made in an FDA registered facility Natural Gluten Free

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

See for yourself

Long Pepper by Herbal Terra label

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

Long Pepper 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 Long Pepper by Herbal Terra

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

Serving size1 mL Dosage formLiquid Servings per container120 Amounts shown are per serving.

Certified organic Long Pepper (Piper longum) dried whole pepper liquid extract

Interacts with
896 drugs
970 mg per serving

Indian long pepper (pippali) is a spice long used in Ayurvedic medicine and is best known for its piperine content, which may increase how well the bo...

Certified organic Long Pepper (Piper longum) dried whole pepper liquid extract monograph & interactions

Other (inactive) ingredients: Menstruum. These complete the product’s ingredient list but are not active constituents.

Interaction report

Long Pepper by Herbal Terra Drug Interactions

Want to check YOUR meds against Long Pepper?

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
896Drugs
893 Moderate 3 Minor

Ingredients driving the most interactions

certified organic Long Pepper (Piper longum) dried whole pepper liquid extract 896

Individual Drug Interactions

The ingredients in Long Pepper interact with 896 drugs. Click any drug to see the details.

1 of the 1 ingredient in Long Pepper interact with drugs. Each result below shows which ingredient is responsible. certified organic Long Pepper (Piper longum) dried whole pepper liquid extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Long Pepper 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.

certified organic Long Pepper (Piper longum) dried whole pepper liquid extract14 drug types · 896 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, Indian long pepper might increase the risk of bleeding when taken with anticoagulant/antiplatelet drugs.
In vitro research shows that Indian long pepper extract inhibits platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, Indian long pepper might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research shows that piperine, a constituent of Indian long pepper, can reduce blood glucose levels. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Cyclosporine (Neoral, Sandimmune)

Theoretically, Indian long pepper might increase the effects and adverse effects of cyclosporine.
In vitro research shows that piperine, a constituent of Indian long pepper, increases the bioavailability of cyclosporine.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, Indian long pepper might increase the effects and adverse effects of CYP3A4 substrates.
In vitro research shows that piperine, a constituent of Indian long pepper, inhibits CYP3A4.

Likelihood Possible Evidence D
Nevirapine (Viramune)

Theoretically, Indian long pepper might increase blood levels of nevirapine.
A small pharmacokinetic study shows that piperine, a constituent of Indian long pepper, increases the plasma concentration and systemic exposure of nevirapine. However, no adverse effects were associated with the elevated plasma levels of nevirapine.

Likelihood Probable Evidence B
P-Glycoprotein Substrates

Theoretically, Indian long pepper might increase levels of P-glycoprotein substrates.
In vitro research shows that piperine, a constituent of Indian long pepper, can inhibit P-glycoprotein.

Likelihood Possible Evidence D
Pentobarbital (Nembutal)

Theoretically, Indian long pepper might increase the sedative effects of pentobarbital.
Animal research shows that piperine, a constituent of Indian long pepper, can increase pentobarbitone-induced sleeping time.

Likelihood Possible Evidence D
Phenytoin (Dilantin)

Theoretically, Indian long pepper might increase blood levels of phenytoin.
A small pharmacokinetic study shows that piperine, a constituent of Indian long pepper, increases phenytoin serum levels and slows its elimination.

Likelihood Possible Evidence B
Propranolol (Inderal)

Theoretically, Indian long pepper might increase blood levels of propranolol.
A small pharmacokinetic study shows that piperine, a constituent of Indian long pepper, accelerates absorption and increases serum concentrations of propranolol.

Likelihood Possible Evidence B
Rifampin (Rifadin)

Theoretically, Indian long pepper might increase blood levels of rifampin.
Piperine, a constituent of Indian long pepper, seems to increase absorption and serum levels of rifampin.

Likelihood Possible Evidence D
Theophylline

Indian long pepper might increase blood levels of theophylline.
A small pharmacokinetic study shows that piperine, a constituent of Indian long pepper, increases serum concentrations and slows elimination of theophylline.

Likelihood Possible Evidence B
Amoxicillin (Amoxil, Trimox)

Theoretically, Indian long pepper might increase the effects and adverse effects of amoxicillin.
Evidence from animal research shows that piperine, a constituent of Indian long pepper, increases the plasma levels of amoxicillin when taken concomitantly.

Likelihood Possible Evidence D
Carbamazepine (Tegretol)

Theoretically, Indian long pepper might increase blood levels of carbamazepine.
A small pharmacokinetic study in patients taking carbamazepine 300 mg or 500 mg twice daily shows that a single 20 mg dose of purified piperine, which is a constituent of Indian long pepper, increases carbamazepine levels. Piperine may increase absorption by increasing blood flow to the GI tract, increasing the surface area of the small intestine, or by cytochrome P450 3A4 (CYP3A4) inhibition in the gut wall. Absorption was significantly increased by 7-10 mcg/mL/hour. The time to eliminate carbamazepine was also increased by 4-8 hours. Although carbamazepine levels were increased, this did not appear to increase side effects.

Likelihood Possible Evidence B
Cefotaxime (Claforan)

Theoretically, Indian long pepper might increase the effects and adverse effects of cefotaxime.
Animal research shows that piperine, a constituent of Indian long pepper, increases the plasma levels of cefotaxime when taken concomitantly.

Likelihood Possible Evidence D
certified organic Long Pepper (Piper longum) dried whole pepper liquid extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Long Pepper, from the product label.

Herbal Terra

See all Herbal Terra products
Name
Herbal Terra
Pharmacist Counseling Corner

Long Pepper by Herbal Terra: Common Questions

Does Long Pepper by Herbal Terra interact with any medications?
Yes. Based on its ingredients, Long Pepper has a known interaction with 896 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Long Pepper 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.
Can I take this if I'm on a blood thinner?
Not without checking first with your doctor or pharmacist. Long pepper can inhibit platelet aggregation and may increase bleeding risk when combined with blood thinners or antiplatelet drugs — a Moderate concern. Don't start this supplement without clearing it with your own healthcare provider.
What's actually in this liquid extract?
The active ingredient is certified organic Long Pepper (Piper longum) dried whole pepper liquid extract. The only other ingredient listed is menstruum, which is the liquid used to extract the pepper. There are no added fillers or binders.
Does it work for asthma or bronchitis?
We don't have reliable evidence that it does. The data we hold rates both conditions as having insufficient evidence to support Long Pepper's benefit. If you're looking for a treatment, talk with your doctor about options with stronger research behind them.
Is it safe during pregnancy?
No — medicinal amounts are not well studied and are traditionally discouraged during pregnancy. If you're pregnant or planning to be, avoid this supplement and talk with your doctor or pharmacist about safe alternatives.
Can I take it while breastfeeding?
There isn't enough safety information to recommend medicinal amounts while breastfeeding. Avoid this supplement during that time, and discuss it with your doctor or pharmacist if you're unsure about what's safe for you and your baby.
Why does this interact with so many medications?
Long pepper's active compound, piperine, affects how your body absorbs and processes many drugs — it can speed up or slow down how your liver and gut handle them. That's why it shows potential interactions with blood thinners, heart drugs, diabetes medicines, and others. The risk to you depends on your exact medications, which is why checking with your pharmacist first matters.

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

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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.

Long Pepper label
Go deeper

The Full Monographs Behind Long Pepper’s Ingredients

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

Herb & supplement monograph

Indian Long Pepper

Interacts with 896 drugs

Indian long pepper (pippali) is a spice long used in Ayurvedic medicine and is best known for its piperine content, which may increase how well the body absorbs certain other substances. Mod...

Read the full Indian Long Pepper monograph →
Sources

Sources & How We Checked

Long Pepper'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 12 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.

Indian Long Pepper 12 references
  1. Bano G, Amla V, Raina RK, et al. The effect of piperine on pharmacokinetics of phenytoin in healthy volunteers. Planta Med 1987;53:568-9. PubMed
  2. Bano G, et al. Effect of piperine on bioavailability and pharmacokinetics of propranolol and theophylline in healthy volunteers. Eur J Clin Pharmacol 1991;41;615-7. PubMed
  3. Bhardwaj RK, Glaeser H, Becquemont L, et al. Piperine, a major constituent of black pepper, inhibits human P-glycoprotein and CYP3A4. J Pharmacol Exp Ther 2002;302:645-50. PubMed
  4. Pattanaik S, Hota D, Prabhakar S, et al. Pharmacokinetic interaction of a single dose of piperine with steady-state carbamazepine in epilepsy patients. Phytother Res 2009;23:1281-6.
  5. Kasibhatta, R. and Naidu, M. U. Influence of piperine on the pharmacokinetics of nevirapine under fasting conditions: a randomised, crossover, placebo-controlled study. Drugs R.D. 2007;8(6):383-391. PubMed
  6. Mujumdar, A. M., Dhuley, J. N., Deshmukh, V. K., Raman, P. H., Thorat, S. L., and Naik, S. R. Effect of piperine on pentobarbitone induced hypnosis in rats. Indian J Exp.Biol. 1990;28(5):486-487.
  7. Panda, S. and Kar, A. Piperine lowers the serum concentrations of thyroid hormones, glucose and hepatic 5'D activity in adult male mice. Horm.Metab Res. 2003;35(9):523-526. PubMed
  8. Hiwale, A. R., Dhuley, J. N., and Naik, S. R. Effect of co-administration of piperine on pharmacokinetics of beta-lactam antibiotics in rats. Indian J Exp.Biol. 2002;40(3):277-281.
  9. Han, Y., Chin Tan, T. M., and Lim, L. Y. In vitro and in vivo evaluation of the effects of piperine on P-gp function and expression. Toxicol.Appl.Pharmacol. 8-1-2008;230(3):283-289. PubMed
  10. Sharma, P., Varma, M. V., Chawla, H. P., and Panchagnula, R. In situ and in vivo efficacy of peroral absorption enhancers in rats and correlation to in vitro mechanistic studies. Farmaco 2005;60(11-12):874-883. PubMed
  11. Zutshi, R. K., Singh, R., Zutshi, U., Johri, R. K., and Atal, C. K. Influence of piperine on rifampicin blood levels in patients of pulmonary tuberculosis. J Assoc.Physicians India 1985;33(3):223-224.
  12. Yadav V, Krishnan A, Vohora D. A systematic review on Piper longum L.: Bridging traditional knowledge and pharmacological evidence for future translational research. J Ethnopharmacol. 2020;247:112255. PubMed

See these in context on the Indian Long Pepper 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

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