No known drug interactions for the matched ingredients — not a guarantee none exist. Check your meds →
Dietary supplement

Killer Nails Ingredients & Drug Interactions

by HUM

Killer Nails label
See full label image
Capsule Category: Vitamin
No known interaction
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Killer Nails 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 No known interaction

Killer Nails is a dietary supplement by HUM with 1 active ingredient. Its ingredients are commonly taken for hair growth and thinning hair, brittle nails, skin health.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.

Jump to a section

HelloPharmacist Scorecard of Killer Nails by HUM

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.

Killer Nails contains one active ingredient: biotin, a B vitamin that plays a role in hair, skin, and nail health. The capsule also contains inactive ingredients — rice flour, cellulose, magnesium stearate, and silica — which are fillers and binders that help hold the supplement together.

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: supports longer, stronger nails and hair.
  • We looked for evidence on: Brittle nails, Biotin deficiency, hair loss, nail health.
  • The strongest evidence on file: Biotin is rated "Likely Effective" for Biotin deficiency (Natural Medicines).
  • Also on file: Biotin is rated "Insufficient Reliable Evidence To Rate" for Brittle nails.

Biotin is likely effective for treating biotin deficiency. For other uses — including hair loss (alopecia areata), multiple sclerosis, and seborrheic dermatitis (a scaly skin condition) — the evidence is either insufficient to rate or points toward it being possibly ineffective.

If you're taking Killer Nails hoping it'll help with one of those other conditions, the science doesn't back that up yet.

The evidence, ingredient by ingredient Biotin

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.

Biotin is generally well tolerated, even at fairly high doses, because your body gets rid of excess through urine. High-dose biotin has rarely caused mild diarrhea.

One isolated case report linked very high-dose biotin combined with other supplements to a serious inflammation, but no similar cases have emerged since, and it's unclear whether biotin was actually the culprit. Check with your doctor before taking high-dose biotin supplements — normal dietary amounts and prenatal vitamin levels are fine.

Side effects, ingredient by ingredient Biotin

Meds to double-check

No known interactions
Known Interaction Concern · database check
No known interactions

No medication interactions are currently documented for the matched ingredients — that isn't a guarantee none exist.

Why this rating?
  • None of the 1 matched ingredient has a documented medication interaction on file.

No interactions are documented in our data for the biotin in this product. That said, always double-check your exact medications using the tool on this page — absence of documented interactions isn't a guarantee none exist.

The bottom line

Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. No medication interactions are currently documented, and safety information is well characterized.

Killer Nails is a simple, single-ingredient biotin supplement that's well tolerated at normal doses. It's likely to help if you have a biotin deficiency, but evidence for nail, hair, or skin improvements in people without a deficiency isn't established.

If you're pregnant, breastfeeding, or taking high-dose biotin, chat with your doctor first.

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 Dec 26, 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 Killer Nails, straight from the product label.

Brand HUM
Barcode (UPC) 855514005177
Net contents 30 Vegetarian/Vegan Capsule(s)
Market status On market
Date entered into DSLD Dec 26, 2020
DSLD ID 241697
Product type Vitamin
Supplement form Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar 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 Killer Nails by HUM, 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)
Servings per container
30
UPC/BARCODE
855514005177
IngredientAmount% DV
Biotin5000 mcg1667%

Other ingredients: Rice Flour, Cellulose, Magnesium Stearate, Silica

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 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.

General Statements

HUM Beauty starts from within

At HUM our mission is to make you look great and feel even greater through scientifically researched nutrition.

Formulation

Supports longer, stronger nails & hair

Non-GMO Gluten-free No artificial colors or preservatives

GMP certified Sustainably sourced

Contains No: Sugar, salt, starch, yeast wheat, gluten, corn, nuts, soy, milk, egg, shellfish, artificial colors, flavors or preservatives.

Vegetarian/vegan product.

Made in USA

Formula

High-potency vegan biotin

Tired of weak nails? Hair got split ends? Let Killer Nails come to your defense, with 5,000 mcg of Biotin to be exact. Widely used for strong nails and hair and specially formulated for HUM in a high-potency vegan formula. Pure & potent nutrients

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Recommended by leading nutritionists Take 1 capsule daily with food

Storage

Store in a cool, dry place.

Precautions

Keep out of reach of children.

Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking prescription drugs, or are pregnant or lactating.

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

See for yourself

Killer Nails by HUM label

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

Killer Nails 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 Killer Nails by HUM

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Biotin

No known
interactions
5000 mcg per serving

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get...

Biotin monograph & interactions

Other (inactive) ingredients: Rice Flour, Cellulose, Magnesium Stearate, Silica. These complete the product’s ingredient list but are not active constituents.

Interaction report

Killer Nails by HUM Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in Killer Nails. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.

The maker

Brand information

Manufacturer and brand details for Killer Nails, from the product label.

HUM

See all HUM products
Name
HUM Nutrition Inc
City
Los Angeles
State
CA
ZipCode
90046
Phone Number
800-805-3861
Web Address
HUMNutrition.com
Pharmacist Counseling Corner

Killer Nails by HUM: Common Questions

Does Killer Nails by HUM interact with any medications?
We do not currently list a known interaction for the mapped ingredients in Killer Nails. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
Killer Nails 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.
Does biotin actually make nails stronger?
Biotin is likely effective if you have a biotin deficiency — it helps your body make keratin, a protein in nails, hair, and skin. If you don't have a deficiency, the evidence for whether it improves nail strength on its own isn't established in our data.
Is this safe to take long term?
Yes, biotin is generally well tolerated even at high doses because excess is filtered out through your urine. Just check with your doctor before starting high-dose supplements — normal dietary and prenatal vitamin amounts are fine on their own.
Can I take this while pregnant or breastfeeding?
Yes, biotin is rated likely safe in pregnancy and lactation. Amounts from food and prenatal vitamins are appropriate, but if you're taking a high-dose supplement, confirm with your doctor first.
What are the side effects?
Biotin is rarely associated with mild diarrhea at very high doses. One isolated case report described a serious inflammation, but no similar reports have emerged, and it's unclear whether biotin was actually responsible.
Will this help with hair loss?
The evidence for biotin helping with alopecia areata (hair loss patches) is insufficient to rate — we don't have enough reliable data to say whether it works for that. If hair loss is your main concern, talk to your doctor about other options.

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

Not sure if Killer Nails 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.

Killer Nails label
Go deeper

The Full Monographs Behind Killer Nails’s Ingredients

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

Herb & supplement monograph

Biotin

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get plenty from a normal diet, and true defi...

Read the full Biotin monograph →
Sources

Sources & How We Checked

Killer Nails'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 4 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.

Biotin 4 references
  1. Debourdeau PM, Djezzar S, Estival JL, et al. Life-threatening eosinophilic pleuropericardial effusion related to vitamins B5 and H. Ann Pharmacother 2001;35:424-6. DOI
  2. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
  3. Mock DM, Quirk JG, Mock NI. Marginal biotin deficiency during normal pregnancy. Am J Clin Nutr 2002;75:295-9. PubMed
  4. Sedel F, Papeix C, Bellanger A, Touitou V, Lebrun-Frenay C, Galanaud D, et al. High doses of biotin in chronic progressive multiple sclerosis: a pilot study.Mult Scler Relat Disord. 2015;4(2):159-69. doi: 10.1016/j.msard.2015.01.005. PubMed

See these in context on the Biotin 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