Niacinamide supplements with the fewest additives

Niacinamide (also known as nicotinamide or nicotinic acid) is a vitamin B3 supplement that may help fight acne, osteoarthritis, and Alzheimer's disease. However, most niacinamide supplements contain more than just niacinamide.

For example, silica or silicon dioxide are often added to prevent caking, magnesium stearate or stearic acid for easier manufacturing, and hypromellose (hydroxypropyl methylcellulose) as an emulsifier or thickener.

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 niacinamide supplements are:

Recommended as purest niacinamide capsule:

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

Niacin (as niacinamide), gelatin (capsule).

Also available as a hydroxypropyl methylcellulose vegetarian capsule.

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

Niacin (as niacinamide), gelatin (capsule).

Also available as a hydroxypropyl methylcellulose vegetarian capsule.

Recommended as purest niacinamide powders:

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

Niacinamide powder.

Health Natura Niacinamide (Powder)
Available on healthnatura.com
Positives:
  • silica-free / silicon-dioxide-free
  • stearic acid-free / magnesium stearate-free
  • hypromellose-free / hydroxypropyl methylcellulose-free
Negatives:
(none)
All ingredients:

Niacinamide powder.

Lotioncrafter Niacinamide (Powder)
Available on lotioncrafter.com

Note: this is not intended as a supplement, it is "considered cosmetic grade material once we repackage it."

Positives:
  • silica-free / silicon-dioxide-free
  • stearic acid-free / magnesium stearate-free
  • hypromellose-free / hydroxypropyl methylcellulose-free
Negatives:
(none)
All ingredients:

Niacinamide powder USP.

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

Niacinamide powder.


Other niacinamide supplements

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

Name Ingredients
21st Century Health Care Niacinamide (Tablets)

Niacinamide, calcium (as calcium carbonate), cellulose, hydroxypropyl methylcellulose, stearic acid, silicon dioxide, magnesium stearate.

Bluebonnet Nutrition Niacinamide (Veggie Capsules)

Vitamin B-3 (niacinamide), 100% kosher vegetable capsules, vegetable cellulose, vegetable magnesium stearate.

Carlson Labs

Niacin (as niacinamide), microcrystalline cellulose, dicalcium phosphate, croscarmellose sodium, stearic acid, hypromellose, magnesium stearate, silicon dioxide, triacetin, polyethylene glycol, carnauba wax. Natural color. Cellulose-coated.

Country Life Gluten Free Niacinamide (Tablets)

Niacin (as niacinamide), cellulose, stearic acid, cellulose & glycerin coating, magnesium stearate, silica, vegetable glaze.

Doctor's Best Best L-Tryptophan Tryptopure Enhanced with Vit. B6 & Niacinamide (Veggie Capsules)

Niacin (as niacinamide), vitamin B6 (from 17.6 mg pyridoxal 5-phosphate), ajinomoto l-tryptophan, vegetable capsule, cellulose, magnesium stearate (vegetable source) and silicon dioxide.

Freeda Kosher Niacinamide (Tablets)

Niacin (as niacinamide), cellulose, modified cellulose gum, calcium stearate.

Jarrow Formulas Niacinamide (Capsules)

Niacinamide, cellulose, magnesium stearate (vegetable source), capsule consists of gelatin.

Nature's Life Niacinamide (Tablets)

Niacin (as niacinamide), cellulose, stearic acid and silica.

Nature's Life Niacinamide (Tablets)

Niacin (as niacinamide), cellulose, stearic acid and silica.

Nature's Plus Niacinamide (Tablets)

Niacin (as niacinamide), stearic acid, di-calcium phosphate, rice bran, hydroxypropyl methylcellulose, magnesium stearate, silica and pharmaceutical glaze.

Nature's Plus Time Release Niacinamide (Tablets)

Niacin (as niacinamide), stearic acid, di-calcium phosphate, rice bran, hydroxypropyl methylcellulose, magnesium stearate, pharmaceutical glaze.

Nature's Way Niacinamide (Capsules)

Niacin (as niacinamide), gelatin (capsule), cellulose, magnesium stearate.

Now Foods Niacinamide (Capsules)

Niacin (as niacinamide) (vitamin B-3), gelatin (capsule) and magnesium stearate (vegetable source).

Solaray Niacinamide (Capsules)

Niacin (as niacinamide), gelatin (capsule), Whole Food Base (whole rice concentrate including the kernel, polishings and hull and pure aloe vera gel [aloe officinalis]).

Solgar Niacinamide (Veggie Capsules)

Niacin (as niacinamide), vegetable cellulose, vegetable stearic acid, microcrystalline cellulose, vegetable magnesium stearate, water, may contain vegetable glycerin.

Source Naturals Niacinamide B-3 (Tablets)

Niacinamide, dibasic calcium phosphate, microcrystalline cellulose, stearic acid, and silica.

Source Naturals Niacinamide B-3 Timed Release (Tablets)

Niacinamide, stearic acid, modified cellulose gum, and magnesium stearate.

Thorne Research Niacinamide (Veggie Capsules)

Niacin (as niacinamide), hypromellose (derived from cellulose) capsule.


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