Biotin supplements with the fewest additives

Biotin may fight diabetes, improve the condition of skin and nails, and more. However, many biotin supplements contain more than just biotin. For example, silica or silicon dioxide are often added to prevent caking, magnesium stearate or stearic acid for easier manufacturing, titanium dioxide for whitening, and lecithin as an emulsifier.

I try to avoid these additives because they may have questionable health effects. If you want to do the same, my recommendations for the purest biotin supplements are:

Recommended as purest gelatin-capsule biotin:

PureBulk Biotin (Gelatin Capsule)
Available on PureBulk
Positives:
  • silica-free / silicon-dioxide-free
  • stearic acid-free / magnesium stearate-free
  • titanium dioxide-free
  • lecithin-free
  • hypromellose-free / hydroxypropyl methylcellulose-free
Negatives:
(none)
All ingredients:

Biotin, mannitol, gelatin (capsule).

Recommended as purest veggie-capsule biotin:

MRM Biotin (Veggie Capsules)
Available on iHerb
Positives:
  • silica-free / silicon-dioxide-free
  • stearic acid-free / magnesium stearate-free
  • titanium dioxide-free
  • lecithin-free
Negatives:
  • contains hypromellose / hydroxypropyl methylcellulose
All ingredients:

D-biotin, rice flour, capsule is made of plant cellulose (hydroxypropyl methylcellulose from Capsugel).

Recommended as purest biotin powders:

BulkSupplements Biotin (Powder)
Available on Bulk Supplements
Positives:
  • silica-free / silicon-dioxide-free
  • stearic acid-free / magnesium stearate-free
  • titanium dioxide-free
  • lecithin-free
  • hypromellose-free / hydroxypropyl methylcellulose-free
Negatives:
(none)
All ingredients:

Biotin powder.

This is pure biotin powder, only intended to be used with precise measuring equipment.

If you want a form that's easy to measure accurately, get their 1% powder, dispersed in dicalcium phosphate.

PureBulk Biotin (Powder)
Available on PureBulk
Positives:
  • silica-free / silicon-dioxide-free
  • stearic acid-free / magnesium stearate-free
  • titanium dioxide-free
  • lecithin-free
  • hypromellose-free / hydroxypropyl methylcellulose-free
Negatives:
(none)
All ingredients:

Biotin powder.

This is pure biotin powder, only intended to be used with precise measuring equipment.

If you want a form that's easy to measure accurately, get their 1% powder, dispersed in mannitol.

Outside the US?

I don't currently know of good biotin brands outside the US. If you do, please let me know in the comments. Otherwise, I'd suggest choosing the lowest-excipient option you can find, or shipping the above products internationally.


Other biotin supplements

The following are other biotin supplements I'm aware of, sorted alphabetically.

Name Ingredients
21st Century Health Care Biotin (Capsules)

Biotin, calcium (as DiCalcium phosphate), gelatin, maltodextrin, magnesium silicate, silicon dioxide, magnesium stearate, stearic acid, cellulose.

21st Century Health Care Biotin (Tablets)

Biotin, calcium (as calcium carbonate), cellulose, croscarmellose sodium, silicon dioxide, stearic acid, magnesium stearate.

Allergy Research Group Biotin 5000 (Veggie Capsules)

Biotin, hydroxypropyl methylcellulose, microcrystalline cellulose, l-leucine.

Bluebonnet Nutrition Biotin (Veggie Capsules)

Biotin, 100% kosher vegetable capsules, vegetable cellulose, vegetable magnesium stearate.

Carlson Labs Biotin (Tablets)

Biotin, dicalcium phosphate, microcrystalline cellulose, stearic acid (veg, ), magnesium stearate (veg), may contain croscarmellose sodium and silicon dioxide.

Country Life Gluten Free Biotin (Veggie Capsules)

Biotin (as d-biotin), cellulose (capsule shell), cellulose, medium chain triglycerides, silica.

Country Life Gluten Free Biotin Hi Potency (Tablets)

Biotin (as d-biotin), cellulose, stearic acid, cellulose & glycerin coating, silica, magnesium stearate, vegetable glaze.

Country Life Gluten Free Biotin High Potency (Veggie Capsules)

Biotin (as d-biotin), cellulose (capsule shell), cellulose, silica.

Country Life Gluten Free Maxi Hair Plus (Veggie Capsules)

Vitamin A (as retinyl palmitate), vitamin C (as ascorbic acid, rose hips), vitamin E (as d-alpha tocopheryl acid succinate), thiamin (vitamin B1) (as thiamine hydrochloride), riboflavin (vitamin B2), niacin (as niacinamide), vitamin B6 (as pyridoxine hydrochloride), folic acid, vitamin B12 (as cyanocobalamin), biotin (as d-biotin), pantothenic acid (as d-calcium pantothenate), calcium (as calcium carbonate), iodine (as kelp), zinc (as zinc rice chelate), selenium (as selenium rice chelate), copper (as copper rice chelate), MSM (methylsulfonylmethane), l-methionine (free from), horsetail extract (leaf/stem), l-cysteine (as l-cysteine hydrochloride), inositol, PABA (para-aminobenzoic acid), choline (from 50 mg choline bitartrate), cellulose (capsule shell), cellulose, inulin (from chicory root), medium chain triglycerides, maltodextrin, silica, calcium silicate.

Enzymatic Therapy Biotin Forte Extra Strength (Tablets)

Vitamin C (ascorbic acid), thiamin (as thiamin HCl) (vitamin B1), riboflavin (vitamin B2), niacin (as niacinamide), vitamin B6 (as pyridoxine HCl), folic acid, vitamin B12 (as cyanocobalamin), biotin, pantothenic acid (as calcium d-pantothenate), daily value (DV). Cellulose, modified cellulose gum, modified cellulose, magnesium stearate, carnauba wax, and soy lecithin.

Good 'n Natural

Biotin, dicalcium phosphate, vegetable cellulose, vegetable stearic acid, silica, vegetable magnesium stearate.

Healthy Origins Biotin High Potency (Veggie Capsules)

Biotin, vegetable capsule (cellulose, water), rice flour.

Jarrow Formulas Biotin (Capsules)

D-biotin, dicalcium phosphate, cellulose, magnesium stearate (vegetable source) and silicon dioxide, capsule consists of gelatin.

Life Extension Biotin (Capsules)

Biotin, gelatin, water, rice flour, magnesium stearate, silica, stearic acid. Contains rice.

Natrol Biotin (Capsules)

Biotin, gelatin, cellulose, water, magnesium stearate, silica.

Natrol Biotin (Tablets)

Biotin, calcium (from dibasic calcium phosphate), cellulose, stearic acid, silica, magnesium stearate, methylcellulose, cellulose gum, glycerin.

Natrol Biotin Cherry Flavor (Tablets)

Biotin, dextrose, cellulose & ester derivatives, PVP, artificial flavor system (cherry), silica, beet root powder, sucralose, maltodextrin, modified food starch, gum arabic, tartaric acid, citric acid.

Natrol Biotin Fast Dissolve Cherry (Tablets)

Biotin, dextrose, f-melt, artificial flavor system (cherry), stearic acid, beet powder, sucralose.

Natrol Biotin Maximum Strength (Tablets)

Biotin, calcium (from dibasic calcium phosphate), cellulose, stearic acid, silica, magnesium stearate, methylcellulose, cellulose gum, glycerin.

Natrol Cinnamon Biotin Chromium (Tablets)

Biotin, chromium (from chromax chromium picolinate), cinnamon extract (cinnamon ramulus) (twig), cellulose, dibasic calcium phosphate, maltodextrin, methylcellulose, cellulose gum, silica, stearic acid, magnesium stearate, glycerin, natural food glaze.

Natrol Yeast Shield (Capsules)

Biotin, psyllium husks (seed), guar gum, apple pectin, chitosan, lactobacillus acidophilus, (2.5 billion colony forming units (CFU) or live cultures at the time of manufacture), garlic (allium sativum) (bulb), caprylic acid (from medium chain triglycerides), herbal blend, pau d'arco extract (bark), onion extract (allium cepa) (bulb), goldenseal (hydrastis canadensis) (aerial parts), echinacea (echinacea purpurea) (root), black walnut (seed), cellulose, gelatin, water, stearic acid, magnesium stearate, silica.

Natural Factors Biotin (Tablets)

Biotin, cellulose, di-calcium phosphate, magnesium stearate (vegetable grade).

Nature Made Biotin (Softgel)

Biotinn, soybean oil, gelatin, glycerin, yellow beeswax, water, biotin, soy lecithin, artificial colors (titanium dioxide, carmine) fruit and vegetable juice for color, maltodextrin, citric acid, sodium hydroxide.

Nature's Bounty Biotin (Softgels)

Biotin, (as d-biotin), soybean oil, gelatin, vegetable glycerin, yellow beeswax, titanium dioxide color.

Nature's Bounty Biotin (Tablets)

Biotin (as d-biotin), dicalcium phosphate, vegetable cellulose, silica, vegetable magnesium stearate.

Nature's Life Biotin (Veggie Capsules)

Biotin (as d-biotin), cellulose vegetarian capsule, magnesium stearate and silica.

Nature's Plus Biotin & Folic Acid (Tablets)

Folic acid, biotin, microcrystalline cellulose, di-calcium phosphate, hydroxypropyl methylcellulose, stearic acid, magnesium stearate, rice bran, riboflavin, pharmaceutical glaze and silica.

Nature's Way Biotin (Lozenges)

Biotin, sorbitol, mannitol, natural cherry flavor, stearic acid, silica.

Now Foods Biotin (Capsules)

Biotin, gelatin (capsule), rice flour, magnesium stearate (vegetable source) and silica.

Now Foods Biotin (Veggie Capsules)

Biotin, rice flour, cellulose (capsule), magnesium stearate (vegetable source) and silica.

Nutricology Biotin 5000 (Veggie Capsules)

Biotin, hydroxypropyl methylcellulose, microcrystalline cellulose, dicalcium phosphate, l-leucine.

Nutrigold Biotin Gold

Biotin (as d-Biotin USP), non-GMO gluten-free rice flour, vegetarian capsule (non-GMO plant cellulose).

Primaforce Insopro-R R-ALA and Biotin Blend (Veggie Capsules)

Biotin, r-alpha lipoic acid, hydroxypropyl methyl cellulose, silicon dioxide and magnesium stearate.

Rexall Sundown Naturals Biotin (Tablets)

Biotin (as d-biotin), dicalcium phosphate, vegetable cellulose, silica, vegetable magnesium stearate.

Rexall Sundown Naturals High Potency Biotin (Capsules)

Biotin (as d-biotin), dicalcium phosphate, calcium carbonate, gelatin, silica, vegetable magnesium stearate.

Rexall Sundown Naturals Super Strength Biotin (Tablets)

Biotin (as d-biotin), dicalcium phosphate, cellulose (plant origin), vegetable stearic acid, croscarmellose, vegetable magnesium stearate.

Solgar Biotin (Tablets)

Biotin, dicalcium phosphate, microcrystalline cellulose, vegetable cellulose, vegetable magnesium stearate, vegetable stearic acid.

Solgar Biotin (Veggie Capsules)

Biotin, microcrystalline cellulose, vegetable cellulose, vegetable stearic acid, vegetable magnesium stearate.

Source Naturals Biotin (Tablets)

Biotin, microcrystalline cellulose, stearic acid and magnesium stearate.

Spring Valley Biotin

Biotin (as d-Biotin), dicalcium phosphate, calcium carbonate, gelatin, silica, vegetable magnesium stearate.

Superior Source Biotin (Tablets)

Biotin, lactose (milk) and acacia gum.

Swanson Biotin (Gelatin Capsule)

Biotin USP, rice flour, acacia gum, gelatin.

Twinlab Biotin Caps (Capsules)

Biotin, potato starch, gelatin, medium chain triglycerides, magnesium stearate, silica.

Twinlab Biotin Dots Mixed Berry Flavor (Tablets)

Biotin, xylitol, mannitol, maltodextrin, natural berry flavors, sorbitol, malic acid, modified cellulose, magnesium stearate, silica.


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