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

Neem Ingredients & Drug Interactions

by Herbal Hills

Neem label
See full label image
Capsule 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 Neem 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

Neem is a dietary supplement by Herbal Hills with 1 active ingredient. Its ingredients are commonly taken for skin conditions, dental and gum health, antimicrobial and antiparasitic.Based on those ingredients, 1,013 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Neem leaves extract & Neem leaves powder Blend. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Neem by Herbal Hills

Ask about any prescription or over-the-counter medication and we check it for interactions with Neem by Herbal Hills — 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 Neem by Herbal Hills

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 27, 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: a blend of neem leaves extract and neem leaves powder. Neem is an herbal remedy with a long history in traditional medicine, sourced from the neem tree.

The capsule itself is made from HPMC (a plant-based capsule material) and silicon dioxide, both inactive ingredients.

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 Neem's overall clinical evidence instead.

Moderate

Some clinical evidence supports Neem 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: Dental plaque — rated "Possibly Effective" (Natural Medicines).
  • On file: Gingivitis — rated "Possibly Effective" (Natural Medicines).
  • On file: Lice — rated "Possibly Effective" (Natural Medicines).

The evidence supports neem leaf for gingivitis (gum inflammation) and lice — both are rated possibly effective based on available research. Dental plaque also has a possibly effective rating.

For acne and tungiasis (a parasitic skin condition), the evidence isn't strong enough to say whether it works. We don't hold data on how well this product performs for any other uses.

The evidence, ingredient by ingredient Neem

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.

Neem leaf preparations are generally well tolerated when taken by mouth for short periods in adults, though high-quality safety studies haven't been done. Topically (on the skin), neem is well tolerated in both children and adults, though sensitive individuals may get contact dermatitis.

The serious caution: neem oil and seed extracts can be toxic if swallowed, and children are at particular risk of serious harm from oral neem oil. The safety data advises against neem during pregnancy — it may affect fertility and pregnancy outcomes.

There isn't enough reliable safety information to know whether it's okay while breastfeeding, so that's another time to skip it. Rare but serious effects reported with oral neem include heart rhythm problems (cardiac arrest, ventricular fibrillation) and kidney damage in adults, and hemolytic anemia (where red blood cells break down) in people with a glucose-6-phosphate dehydrogenase deficiency.

Talk with your doctor or pharmacist before starting neem if you have any of these concerns or if you're pregnant or nursing.

Side effects, ingredient by ingredient Neem

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 — Neem.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: immunosuppressants / transplant drugs; diabetes medications.
  • For scale: 1,014 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 neem, double-check the following medication types with your doctor or pharmacist: antidiabetes drugs (risk of dangerously low blood sugar), immunosuppressants (may become less effective), and any drugs cleared by your liver or kidneys, including those processed by CYP1A2, CYP2C8, CYP2C9, and CYP3A4 enzymes or P-glycoprotein transport.

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.

Neem may help with gingivitis, plaque, and lice based on available evidence. It interacts with over 1,000 medications across several drug-processing pathways, so if you take any prescription drugs — especially diabetes medications, immunosuppressants, or anything your liver breaks down — you need to check with your own doctor or pharmacist before taking it.

Avoid it during pregnancy and breastfeeding. Use only the leaf preparation, never neem oil, especially if children are in the home.

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 Jul 25, 2017.

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 Neem, straight from the product label.

Brand Herbal Hills
Barcode (UPC) 8906068413641
Net contents 120 Vegi Capsule(s)
Market status On market
Date entered into DSLD Jul 25, 2017
DSLD ID 75167
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Halal
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 Neem by Herbal Hills, 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 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
UPC/BARCODE
8906068413641
IngredientAmount% DV
Neem leaves extract & Neem leaves powder Blend350 mg--

Other ingredients: Silicon Dioxide, HPMC Capsule

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.
FDA Statement of Identity

Dietary Supplement

General Statements

Mfg. Lic. No. : PD/AYU/002/10

(An ISO 22000:2005 Certified Company)

Back to nature

Healthy blood support

~ Pure ~ Natural ~ Effective

Neem is considered important for its variety of beneficial uses. In Sanskrit Neem herb is called 'Sarva Roga Nivaran'. It is considered to be nature's best blood purifier, analgesic, antiseptic and one of the most important detoxicant in Ayurveda. Neem helps in the detoxification of undesirable compounds. It helps maintain overall skin health.

Contents based on standard raw material as per Ayurvedic text

Brand IP Statement(s)

Product name: Neemhills

Seals/Symbols

JAS-ANZ ICS ISO 22000:2005 Reg. No.: RH91/7301

GMP Good Manufacturing Practice

Halal India www.halalindia.com

Storage

Store in a cool dry place away from direct sunlight.

Precautions

Keep out of reach of children.

Do not use if inner seal is broken or missing.

Caution: Pregnant or lactating women are advised to consume herbal products under the advice of the healthcare practitioner.

Formula

Standardized extract / 3.5% Bitter

Halal India www.halalindia.com

Suggested/Recommended/Usage/Directions

Directions For Use: As a dietary supplement take 1 capsule twice daily, preferably after meals. For better results it should be taken with warm water

FDA Disclaimer Statement

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

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

See for yourself

Neem by Herbal Hills label

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

Neem 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 Neem by Herbal Hills

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

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

Neem leaves extract & Neem leaves powder Blend

Interacts with
1,013 drugs
350 mg per serving Form: Bitter

Neem is a tree from India used for centuries in traditional medicine, especially for skin, dental, and antimicrobial purposes. Some small studies are...

Neem leaves extract & Neem leaves powder Blend monograph & interactions

Other (inactive) ingredients: Silicon Dioxide, HPMC Capsule. These complete the product’s ingredient list but are not active constituents.

Interaction report

Neem by Herbal Hills Drug Interactions

Want to check YOUR meds against Neem?

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
1,013Drugs
1,013 Moderate

Ingredients driving the most interactions

Neem leaves extract & Neem leaves powder Blend 1,013

Individual Drug Interactions

The ingredients in Neem interact with 1,013 drugs. Click any drug to see the details.

1 of the 1 ingredient in Neem interact with drugs. Each result below shows which ingredient is responsible. Neem leaves extract & Neem leaves powder Blend

Each ingredient & the kinds of drugs it affects

For each ingredient in Neem 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.

Neem leaves extract & Neem leaves powder Blend7 drug types · 1,013 drugs

Antidiabetes Drugs

Neem might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Some clinical research shows that neem can lower blood glucose levels in adults with type 2 diabetes, including those already taking metformin.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, neem leaf extract might increase the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that neem leaf extract inhibits CYP1A2 enzymes. So far, this reaction has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C8 (Cyp2C8) Substrates

Theoretically, neem leaf extract might increase the levels and clinical effects of CYP2C8 substrates.
In vitro research shows that neem leaf methanol extract inhibits CYP2C8 enzymes. So far, this reaction has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, neem leaf extract might increase the levels and clinical effects of CYP2C9 substrates.
In vitro research shows that neem leaf methanol extract inhibits CYP2C9 enzymes. So far, this reaction has not been reported in humans.

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

Theoretically, neem leaf extract might increase the levels and clinical effects of CYP3A4 substrates.
In vitro research shows that neem leaf methanol extract inhibits CYP3A4 enzymes. So far, this reaction has not been reported in humans.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, neem might decrease the effectiveness of immunosuppressants.
Animal research suggests that neem might have immunostimulant effects.

Likelihood Possible Evidence D
P-Glycoprotein Substrates

Theoretically, neem leaf extract might increase the levels and clinical effects of P-glycoprotein substrates.
In vitro research shows that neem leaf methanol extract inhibits renal P-glycoprotein transport activity. So far, this reaction has not been reported in humans.

Likelihood Possible Evidence D
Neem leaves extract & Neem leaves powder Blend full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Neem, from the product label.

Herbal Hills

See all Herbal Hills products
Name
Isha Agro Developers Pvt. Ltd.
Street Address
55-A/B, Lonavala Co-op. Indl. Est. Ltd.
City
Nangargaon, Lonavala, Taluka-Maval, Dist. Pune,
State
Maharashtra
ZipCode
410401
Web Address
0091 22 2868 6868
Pharmacist Counseling Corner

Neem by Herbal Hills: Common Questions

Does Neem by Herbal Hills interact with any medications?
Yes. Based on its ingredients, Neem has a known interaction with 1,013 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Neem 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.
Is neem safe to take while pregnant or breastfeeding?
No. The safety data advises against neem during pregnancy because it may affect fertility and pregnancy. There isn't enough safety information to recommend it while breastfeeding either. Talk with your doctor or pharmacist if you're pregnant, planning to become pregnant, or nursing.
Can I use neem on my skin if I have sensitive skin?
Neem is generally well tolerated on the skin in both children and adults, but sensitive individuals can develop contact dermatitis (an allergic rash). If you have very reactive skin, patch-test it on a small area first or check with your pharmacist.
What is neem good for?
Based on available evidence, neem leaf is possibly effective for gingivitis (inflamed gums), lice, and dental plaque. For acne and other uses, the evidence isn't established. Talk with your doctor if you're considering neem for a specific health concern.
Is neem oil the same as the leaf preparation in this product?
No. This product contains neem leaf extract and powder, not neem oil. Neem oil can be toxic if swallowed, especially in children, so it's important to use only the leaf preparation form.
Will neem interact with my diabetes medication?
Yes. Neem can lower blood sugar, and when combined with diabetes drugs, it may increase your risk of low blood sugar (hypoglycemia). If you take medication for diabetes, check with your doctor or pharmacist before starting neem.
Does this product contain fillers?
The capsule is made from HPMC (a plant-based material) and silicon dioxide, both inactive ingredients that make up the capsule structure itself. There are no other fillers listed.

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

Not sure if Neem 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.

Neem label
Go deeper

The Full Monographs Behind Neem’s Ingredients

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

Herb & supplement monograph

Neem

Interacts with 1,013 drugs

Neem is a tree from India used for centuries in traditional medicine, especially for skin, dental, and antimicrobial purposes. Some small studies are promising for oral health and skin, but...

Read the full Neem monograph →
Sources

Sources & How We Checked

Neem'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 28 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.

Neem 28 references
  1. Sinniah D, Baskaran G. Margosa oil poisoning as a cause of Reye's syndrome. Lancet 1981;1:487-9. PubMed
  2. Sinniah D, Baskaran G, Looi LM, Leong KL. Reye-like syndrome due to margosa oil poisoning: report of a case with postmortem findings. Am J Gastroenterol 1982;77:158-61.
  3. Sinniah R, Sinniah D, Chia LS, Baskaran G. Animal model of margosa oil ingestion with Reye-like syndrome. Pathogenesis of microvesicular fatty liver. J Pathol 1989;159:255-64. PubMed
  4. Lai SM, Lim KW, Cheng HK. Margosa oil poisoning as a cause of toxic encephalopathy. Singapore Med J 1990;31:463-5.
  5. Biswas K, Chattopadhyay I, Banerjee RK, Bandyopadhyay U. Biological activities and medicinal properties of neem (Azadirachta indica). Curr Sci 2002;82:1336-45.
  6. Upadhyay SN, Dhawan S, Garg S, Talwar GP. Immunomodulatory effects of neem (Azadirachta indica) oil. Int J Immunopharmacol 1992;14:1187-93. PubMed
  7. Ibrahim IA, Khalid SA, Omer SA, Adam SE. On the toxicology of Azadirachta indica leaves. J Ethnopharmacol 1992;35:267-73. PubMed
  8. Ali BH. Toxicology of Azadirachta indica. J Ethnopharmacol 1994;42:71-2. PubMed
  9. Boeke SJ, Boersma MG, Alink GM, et al. Safety evaluation of neem (Azadirachta indica) derived pesticides. J Ethnopharmacol 2004;94:25-41. PubMed
  10. Abdel-Ghaffar, F. and Semmler, M. Efficacy of neem seed extract shampoo on head lice of naturally infected humans in Egypt. Parasitol.Res 2007;100(2):329-332. PubMed
  11. Reutemann, P. and Ehrlich, A. Neem oil: an herbal therapy for alopecia causes dermatitis. Dermatitis 2008;19(3):E12-E15.
  12. Senanayake, M. P., Rupasinghe, S., and Dissanayake, P. V. Margosa (Kohomba) oil induced toxic encephalopathy following home remedy for intestinal worms. Ceylon Med.J 2009;54(4):140. PubMed
  13. Bhaskar, M. V., Pramod, S. J., Jeevika, M. U., Chandan, P. K., and Shetteppa, G. MR imaging findings of neem oil poisoning. AJNR Am J Neuroradiol. 2010;31(7):E60-E61.
  14. Iyyadurai, R., Surekha, V., Sathyendra, S., Paul, Wilson B., and Gopinath, K. G. Azadirachtin poisoning: a case report. Clin Toxicol.(Phila) 2010;48(8):857-858. PubMed
  15. Sinniah, D., Sinniah, R., Baskaran, G., Pathmanathan, R., Yamashita, F., and Yoshino, M. Evaluation of the possible role of glucose, carnitine, coenzyme Q10 and steroids in the treatment of Reye's syndrome using the margosa oil animal model. Acta Paediat PubMed
  16. Balakrishnan, V., Pillai, N. R., and Santhakumari, G. Ventricular fibrillation and cardiac arrest due to neem leaf poisoning. J.Assoc.Physicians India 1986;34(7):536.
  17. Sivashanmugham, R., Bhaskar, N., and Banumathi, N. Ventricular fibrillation and cardiac arrest due to neem leaf poisoning. J.Assoc.Physicians India 1984;32(7):610-611.
  18. Mukherjee, S. and Talwar, G. P. Termination of pregnancy in rodents by oral administration of praneem, a purified neem seed extract. Am J Reprod.Immunol. 1996;35(1):51-56. PubMed
  19. Talwar, G. P., Pal, R., Singh, O., Garg, S., Taluja, V., Upadhyay, S. N., Gopalan, S., Jain, V., Kaur, J., and Sehgal, S. Safety of intrauterine administration of purified neem seed oil (Praneem Vilci) in women & effect of its co-administration with the
  20. Talwar, G. P., Shah, S., Mukherjee, S., and Chabra, R. Induced termination of pregnancy by purified extracts of Azadirachta Indica (Neem): mechanisms involved. Am J Reprod.Immunol. 1997;37(6):485-491. PubMed
  21. Greenblatt DT, Banerjee P, White JM. Allergic contact dermatitis caused by neem oil. Contact Dermatitis. 2012;67(4):242-3. PubMed
  22. Page C, Hawes EM. Haemolytic anaemia after ingestion of Neem (Azadirachta indica) tea. BMJ Case Rep. 2013. pii: bcr2013200890.
  23. Braidy N, Berg J, Clement J, et al. Role of nicotinamide dinucleotide and related precursors as therapeutic targets for age-related degenerative diseases: rationale, biochemistry, pharmacokinetics, and outcomes. Antiox Redox Signal 2018.
  24. Jadhav PB. Leucoderma on the lips induced by neem (Azadirachta indica): case series. Clin Exp Dermatol. 2018;43(8):943-6.
  25. Giuggioli D, Lumetti F, Spinella A, et al. Use of Neem oil and Hypericum perforatum for treatment of calcinosis-related skin ulcers in systemic sclerosis. J Int Med Res 2019:300060519882176. Online ahead of print.
  26. Pingali U, Ali MA, Gundagani S, Nutalapati C. Evaluation of the effect of an aqueous extract of Azadirachta indica (neem) leaves and twigs on glycemic control, endothelial dysfunction and systemic inflammation in subjects with type 2 diabetes mellitus - a
  27. Amaeze O, Marques ES, Wei W, et al. Evaluation of Nigerian Medicinal Plants Extract on Human P-glycoprotein and Cytochrome P450 Enzyme Induction: Implications for Herb-drug Interaction. Curr Drug Metab. 2021;22(14):1103-1113. PubMed
  28. Amaeze O, Eng H, Horlbogen L, Varma MVS, Slitt A. Cytochrome P450 Enzyme Inhibition and Herb-Drug Interaction Potential of Medicinal Plant Extracts Used for Management of Diabetes in Nigeria. Eur J Drug Metab Pharmacokinet. 2021;46(3):437-450. PubMed

See these in context on the Neem 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