Interactions on record — worth a quick check against your medications. Based on 5 of 8 ingredients. Check your meds →
Dietary supplement

Plant Enzymes Ingredients & Drug Interactions

by NOW

Capsule Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Plant Enzymes is a dietary supplement by NOW with 8 active ingredients. Its ingredients are commonly taken for inflammation and swelling, sinus and nasal congestion, digestion support.Based on those ingredients, 141 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Bromelain, Papain. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Plant Enzymes by NOW

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

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 8 active ingredients.
  • “Multi-Enyzme Blend” is a proprietary blend — the label gives one combined amount (71 mg) without saying how much of each component you get.

Plant Enzymes by NOW contains 8 active ingredients: Amylase, Bromelain, Protease, Lipase, Lactase, Cellulase, Acid Protease, and Papain in a Multi-Enzyme Blend. These are digestive enzymes — proteins your body uses to break down carbohydrates, fats, and proteins in food.

Lactase specifically helps digest lactose in dairy products. The inactive ingredients are microcrystalline cellulose, hypromellose, calcium laurate, and silicon dioxide (the capsule and fillers).

Does it work?

Strong 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
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: support proper digestion and nutrient absorption.
  • We looked for evidence on: Dyspepsia, Lactose intolerance, Exercise-induced muscle soreness, bloating, gas, indigestion.
  • The strongest evidence on file: Lactase is rated "Effective" for Lactose intolerance (Natural Medicines).
  • Also on file: Papain is rated "Insufficient Reliable Evidence To Rate" for Exercise-induced muscle soreness.
  • Also on file: Lipase is rated "Insufficient Reliable Evidence To Rate" for Dyspepsia.

The evidence for most of these enzymes is limited. Lactase is the exception — it's effective for lactose intolerance.

For bromelain, the data shows insufficient evidence for hay fever, burns, cancer, nerve pain, vein problems, and diabetes. Papain also lacks reliable evidence for cancer, tooth decay, radiation burns, muscle soreness, shingles, and parasites.

Lipase has insufficient evidence for digestive upset and inflammatory bowel disease. We hold no effectiveness ratings for Protease, Acid Protease, Amylase, or Cellulase in our data.

The evidence, ingredient by ingredient Bromelain Proteolytic Enzymes (proteases) Lipase Lactase Papain

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 5 of the 5 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 5 of 5.
  • General safety write-ups exist for 5 of 5.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Most of these enzymes are generally well tolerated short-term. Bromelain may cause diarrhea, flatulence, stomach upset, and headache, and allergic reactions are possible if you're sensitive.

Protease and Acid Protease can cause digestive upset or allergic reactions; occupational exposure to airborne protease has triggered asthma in some workers. Papain is usually fine as a food but may irritate your digestive tract or cause allergic reactions at supplement doses — rarely, very high doses have caused esophageal damage.

Lactase is generally safe; one case of allergic contact dermatitis was reported in a worker handling powdered lactase. Pregnancy and breastfeeding: bromelain and papain should be avoided (not enough safety data or theoretical concerns).

Protease, Acid Protease, and Lipase are cautioned — use only with medical advice. Lactase is likely safe in pregnancy but check with your doctor first; limited data exists for breastfeeding.

Side effects, ingredient by ingredient Bromelain Proteolytic Enzymes (proteases) Lipase Lactase Papain

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?
  • 2 of the 5 matched ingredients can interact with medications — Papain, Bromelain.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 141 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.

If you're on anticoagulants or antiplatelet drugs (blood thinners, aspirin, warfarin), double-check this product first — bromelain and papain both carry Moderate interaction risk. Tetracycline antibiotics are a Minor concern with bromelain.

No interactions are documented for Protease, Acid Protease, or Lactase; we could not check Amylase or Cellulase.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with clinical evidence supporting its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

If you take blood thinners (like warfarin or aspirin), tetracycline antibiotics, or any prescription medication, check your exact drugs with our search tool before starting. The enzymes here, especially bromelain and papain, need that extra step.

If you're pregnant or breastfeeding, talk to your pharmacist — most of these ingredients lack solid safety data in those situations.

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

Assessment coverage: 6 of 8 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 25, 2025.

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 Plant Enzymes, straight from the product label.

Brand NOW
Barcode (UPC) 733739029676
Net contents 240 Veg Capsule(s)
Market status On market
Date entered into DSLD Sep 25, 2025
DSLD ID 335291
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Kosher, Halal, Dairy 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 Plant Enzymes by NOW, 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 Veg Capsule(s)
Maximum serving Sizes:
1 Veg Capsule(s)
Servings per container
240
UPC/BARCODE
733739029676
IngredientAmount% DV
Amylase0 NP--
Bromelain0 NP--
Protease0 NP--
Lipase0 NP--
Lactase0 NP--
Cellulase0 NP--
Acid Protease0 NP--
Papain0 NP--
Multi-Enyzme Blend71 mg--

Other ingredients: Microcrystalline Cellulose, Hypromellose, Calcium Laurate, Silicon Dioxide

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

Suggested Usage: Take 1 capsule with each meal.

Formula

NOW Plant Enzymes is a comprehensive blend of enzymes that helps to support proper digestion. NOW Plant Enzymes also includes lactase to support the digestion of dairy products for those who are sensitive to lactose.

Plant Enzymes With Lactase, Protease, Papain, and Bromelain

Triangle K (Kosher)

Crescent H (Halal)

Formulation

This product's combination of enzymes assists in the breakdown of fats, fiber, proteins, and carbohydrates, thus optimizing the availability of nutrients in the food you eat.

Natural color variation may occur in this product.

Supports Healthy Digestion

Non-GMO

Vegetarian/Vegan

Made and quality tested in the USA with globally sourced ingredients.

Not manufactured with milk, egg, fish, shellfish, tree nut or sesame ingredients.

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: For adults only. Keep out of reach of children.

Not recommended for individuals with known pineapple/papaya/enzyme allergies.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Contains sulfites.

Storage

Store in a cool, dry place after opening.

FDA Statement of Identity

A Dietary Supplement

Seals/Symbols

Triangle K (Kosher)

GMP Quality Assured Crescent H (Halal)

General Statements

Digestive Family owned since 1968.

This bottle is made from 100% PCR (post-consumer recycled) resin.

See for yourself

Plant Enzymes by NOW label

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

What’s inside

The Ingredients in Plant Enzymes by NOW

These are the 8 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Veg Capsule(s) Dosage formCapsule Servings per container240 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Multi-Enyzme Blend

71 mg per serving

Other (inactive) ingredients: Microcrystalline Cellulose, Hypromellose, Calcium Laurate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Plant Enzymes by NOW Drug Interactions

Want to check YOUR meds against Plant Enzymes?

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
141Drugs
122 Moderate 19 Minor

Ingredients driving the most interactions

Bromelain 141
Papain 2

Each ingredient & the kinds of drugs it affects

For each ingredient in Plant Enzymes with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Bromelain2 drug types · 141 drugs

Anticoagulant/Antiplatelet Drugs

Bromelain may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
There is one case report of a patient experiencing minor bruising while taking bromelain with naproxen. Bromelain is thought to have antiplatelet activity. Whether this interaction is of concern with topical bromelain is unclear. Interference with coagulation of burn wounds has been reported in a patient receiving bromelain-based enzymatic debridement. However, observational research has found that topical bromelain debridement is not associated with increases or decreases in laboratory markers of coagulation when compared with surgical debridement.

Likelihood Possible Evidence D
Tetracycline Antibiotics

Theoretically, bromelain might increase levels of tetracycline antibiotics.
Laboratory research suggests that bromelain might increase the absorption of tetracycline antibiotics. However, a study in healthy adults reported no difference in tetracycline plasma levels when a 500 mg dose was taken with or without bromelain 80 mg.

Likelihood Possible Evidence B

Papain1 drug type · 2 drugs

Warfarin (Coumadin)

Theoretically, papain might increase the effects and side effects of warfarin.
In one case report, a patient previously stable on warfarin was found to have an international normalization ratio (INR) of 7.4, which was attributed to ingestion of a supplement containing papain from papaya extract.

Likelihood Possible Evidence D
The maker

Brand information

Manufacturer and brand details for Plant Enzymes, from the product label.

NOW

See all NOW products
Name
NOW Foods
Street Address
395 S. Glen Ellyn Rd.
City
Bloomingdale
State
IL
ZipCode
60108
Web Address
nowfoods.com
Pharmacist Counseling Corner

Plant Enzymes by NOW: Common Questions

Does Plant Enzymes by NOW interact with any medications?
Yes. Based on its ingredients, Plant Enzymes has a known interaction with 141 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Plant Enzymes contains 8 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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.
Does this help with digestion?
These enzymes are designed to break down carbs, fats, and proteins in food. But we don't hold effectiveness data for most of them — the only one with solid evidence is lactase for lactose intolerance. If you have specific digestive concerns, ask your pharmacist whether enzymes make sense for you.
Can I take this if I'm on blood thinners?
No, not without checking with your pharmacist first. Bromelain and papain in this product both interact with blood thinners (warfarin especially) and can increase bleeding risk. One patient on warfarin had dangerously high levels after taking papaya extract. Your pharmacist can tell you if it's safe for your specific medication.
What side effects might I get?
Most common are digestive — diarrhea, gas, stomach upset, or headache with bromelain. Allergic reactions are possible if you're sensitive to these enzymes; symptoms can include itchy eyes, runny nose, rash, or rarely respiratory trouble. Papain at very high doses has caused serious stomach damage in rare cases, but supplements are at lower doses.
Is it safe during pregnancy?
No — bromelain and papain should be avoided in pregnancy. There isn't enough safety data on Protease, Acid Protease, and Lipase to know either way; talk to your doctor or pharmacist before using. Lactase is likely safe, but check first. Your healthcare provider can give you personalized advice based on your situation.
Can I take it while breastfeeding?
The safety data here is limited. Bromelain and papain are best avoided. Protease, Acid Protease, and Lipase are not recommended without medical advice because we don't have enough information. Lactase is probably fine since it works only in the gut, but ask your pharmacist to be sure.
Does it interact with antibiotics?
Bromelain may increase blood levels of tetracycline antibiotics, but a human study found the effect was small or absent at typical doses. Still, mention this product to your pharmacist if you're on a tetracycline. No other interactions with antibiotics are documented for the ingredients we could check.

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

Not sure if Plant Enzymes 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.

Plant Enzymes label
Go deeper

The Full Monographs Behind Plant Enzymes’s Ingredients

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

Sources

Sources & How We Checked

Plant Enzymes'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 35 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.

Bromelain 19 references
  1. Nettis E, Napoli G, Ferrannini A, Tursi A. IgE-mediated allergy to bromelain. Allergy 2001;56:257-8. PubMed
  2. Taussig SJ, Batkin S. Bromelain, the enzyme complex of pineapple (Ananas comosus) and its clinical application. An update. J Ethnopharmacol 1988;22:191-203.. PubMed
  3. Bradbrook ID, Morrison PJ, Rogers HJ. The effect of bromelain on the absorption of orally administered tetracycline. Br J Clin Pharmacol 1978;6:552-4. PubMed
  4. Bush TM, Rayburn KS, Holloway SW, et al. Adverse interactions between herbal and dietary substances and prescription medications: a clinical survey. Altern Ther Health Med 2007;13:30-5.
  5. Brien S, Lewith G, Walker AF, et al. Bromelain as an adjunctive treatment for moderate-to-severe osteoarthritis of the knee: a randomized placebo-controlled pilot study. QJM 2006;99:841-50. PubMed
  6. Mori S, Ojima Y, Hirose T, et al. The clinical effect of proteolytic enzyme containing bromelain and trypsin on urinary tract infection evaluated by double blind method. Acta Obstet Gynaecol Jpn 1972;19:147-53.
  7. Glaser D, Hilberg T. The influence of bromelain on platelet count and platelet activity in vitro. Platelets 2006;17:37-41. PubMed
  8. Heinicke R M, van der Wal L, Yokoyama M. Effect of bromelain (Ananase) on human platelet aggregation. Experientia 1972;28:844-5. PubMed
  9. Gailhofer, G., Wilders-Truschnig, M., Smolle, J., and Ludvan, M. Asthma caused by bromelain: an occupational allergy. Clin Allergy 1988;18(5):445-450. PubMed
  10. Mattei, O., Fabri, G., and Farina, G. [Occupational health experience regarding four cases of asthma due to bromelain (author's transl)]. Medicina del Lavoro 1979;70(5):404-409.
  11. Galleguillos, F. and Rodriguez, J. C. Asthma caused by bromelin inhalation. Clin Allergy 1978;8(1):21-24. PubMed
  12. Perez-Camo I, Quirce S, Duran MA, and et al. Latex allergy: evidence of cross-reactivity with papain and bromelain [abstract]. Allergy 1996;51(suppl 31):48.
  13. Martin GJ, Ehrenreich J, and Asbell N. Bromelain: pineapple proteases with anti-edema activity. Exp Med Surg 1962;20:227-247.
  14. Kasemsuk T, Saengpetch N, Sibmooh N, Unchern S. Improved WOMAC score following 16-week treatment with bromelain for knee osteoarthritis. Clin Rheumatol. 2016 Oct;35(10):2531-40. PubMed
  15. Kutlu Ö, DemirbaS A, Elmas ÖF, Güvenç U, Metin A. Fixed drug eruption: a new side effect of bromelain. Contact Dermatitis 2020. Online ahead of print. PubMed
  16. Shoham Y, Shapira E, Haik J, et al. Bromelain-based enzymatic debridement of chronic wounds: Results of a multicentre randomized controlled trial. Wound Repair Regen 2021;29(6):899-907. PubMed
  17. Pfister P, Garcia Wendel PD, Kim BS, et al. Coagulation side effects of enzymatic debridement in burned patients. Burns 2022. PubMed
  18. Hasham S, Riyat H, Fletcher A, O'Boyle CP, Alexander S. To bleed or not to bleed? Case series and discussion of haemorrhage risk with enzymatic debridement in burn injuries. Scars Burn Heal 2023;9:20595131231168333. PubMed
  19. Leelakanok N, Petchsomrit A, Janurai T, Saechan C, Sunsandee N. Efficacy and safety of bromelain: A systematic review and meta-analysis. Nutr Health 2023. PubMed

See these in context on the Bromelain monograph →

Proteolytic Enzymes (proteases) 3 references
  1. Weeks JA, Harper RA, Simon RA, Burdick JD. Assessment of sensitization risk of a laundry pre-spotter containing protease. Cutan Ocul Toxicol. 2011;30(4):272-9. PubMed
  2. Marquès LI, Lara S, Abós T, Bartolomé B. Occupational rhinitis due to pepsin. J Investig Allergol Clin Immunol. 2006;16(2):136-7. DOI
  3. Cartier A, Malo JL, Pineau L, Dolovich J. Occupational asthma due to pepsin. J Allergy Clin Immunol. 1984;73(5 Pt 1):574-7. PubMed

See these in context on the Proteolytic Enzymes (proteases) monograph →

Lipase 1 reference
  1. Casper C, Hascoet JM, Ertl T, et al. Recombinant bile salt-stimulated lipase in preterm infant feeding: A randomized phase 3 study. PLoS One. 2016;11(5):e0156071. PubMed

See these in context on the Lipase monograph →

Lactase 1 reference
  1. Laukkanen A, Ruoppi P, Remes S, Koistinen T, Mäkinen-Kiljunen S. Lactase-induced occupational protein contact dermatitis and allergic rhinoconjunctivitis. Contact Dermatitis. 2007;57(2):89-93. PubMed

See these in context on the Lactase monograph →

Papain 11 references
  1. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Shaw D, Leon C, Kolev S, Murray V. Traditional remedies and food supplements: a 5-year toxicological study (1991-1995). Drug Saf 1997;17:342-56.
  3. Shuttleworth D, Hill S, Marks R, Connelly DM. Relief of experimentally induced pruritus with a novel eutectic mixture of local anaesthetic agents. Br J Dermatol 1988;119:535-40.
  4. Mansfield LE, Ting S, Haverly RW, Yoo TJ. The incidence and clinical implications of hypersensitivity to papain in an allergic population, confirmed by blinded oral challenge. Ann Allergy 1985;55:541-3.
  5. Martin, T., Uhder, K., Kurek, R., Roeddiger, S., Schneider, L., Vogt, H. G., Heyd, R., and Zamboglou, N. Does prophylactic treatment with proteolytic enzymes reduce acute toxicity of adjuvant pelvic irradiation? Results of a double-blind randomized trial PubMed
  6. Walker-Renard, P. Update on the medicinal management of phytobezoars. Am J Gastroenterol. 1993;88(10):1663-1666.
  7. Tymoszuk D, Wiszniewska M, Walusiak-Skorupa J. Papain-induced occupational rhinoconjunctivitis and asthma - A case report. Med Pr 2016;67(1):109-12. PubMed
  8. Soto-Mera MT, López-Rico MR, Filgueira JF, et al. Occupational allergy to papain. Allergy 2000;55(10):983-4. PubMed
  9. Tarlo SM, Shaikh W, Bell B, et al. Papain-induced allergic reactions. Clin Allergy 1978;8(3):207-15. PubMed
  10. Baur X, König G, Bencze K, Fruhmann G. Clinical symptoms and results of skin test, RAST and bronchial provocation test in thirty-three papain workers: Evidence for strong immunogenic potency and clinically relevant proteolytic e?ects of airborne papain. C
  11. Novey HS, Keenan WJ, Fairshter RD, Wells ID, Wilson AF, Culver BD. Pulmonary disease in workers exposed to papain: clinico-physiological and immunological studies. Clin Allergy 1980;10(6):721-31. PubMed

See these in context on the Papain 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