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Sam's Club
Sam's Club
Customer reviews for Member's Mark Biotin 10,000mcg with Keratin 100mg Capsules, 250 ct. for
Member's Mark Biotin 10,000mcg with Keratin 100mg Capsules, 250 ct.
4.8 out of 5 stars
stars1,043 ratings268 reviews
  1. 5 stars87% (907)
  2. 4 stars9% (90)
  3. 3 stars2% (23)
  4. 2 stars0% (5)
  5. 1 star2% (18)

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Showing 171-180 of 268 reviews
Jan 2, 2024
Bobo
5 out of 5 stars review

Verified Purchase

Good

Good

Helpful?2R7QE1UDYBXJ7874213744
Oct 18, 2024
Bernie
5 out of 5 stars review

Verified Purchase

Great

Good

Helpful?2R7QE1UDYBXJ7874213744
Jun 17, 2019
GardenGirlNC
1 out of 5 stars review

Terrible product

I was using a name-brand biotin and decided to try this since I got so many more pills for the money and it was double the mcg (5000 versus 10000). Big mistake. My finger nails went back to being flaky, thin and brittle in no time. Also, I developed a rash along my arms, stomach, and breasts. I stopped taking these and went back to my Name Brand and have restored nails and no rash. Don't know what's in this but it isn't Biotin and it can give a rash.

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Feb 20, 2021
4Felines
1 out of 5 stars review

Very inferior product

Wanted to switch to capsules vs. gel caps. Made a terrible choice is using these. Have absolutely no effect. Prior to taking these, my nails were strong. After maybe 2-3 wks, nails would chip, snag & break. Cuticles were dry & rough. Cannot recommend this formula at all. Have been taking biotin in gel cap form, another brand, for years w/excellent results. Will be returning to my former brand. Disappointed in Sam's quality. Unusual for Members Mark products that I'm generally quite pleased with. These are definitely inferior.

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Aug 14, 2017
Sharon K
5 out of 5 stars review

Verified Purchase

Great Product!!

I purchased this item over a month ago and I am so happy I did. I am seeing amazing results.

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Nov 16, 2022
Carolmae
5 out of 5 stars review

Verified Purchase

Worth a try

Easy to swallow. Too early to say if it helps hair growth

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Jan 22, 2023
Nope
4 out of 5 stars review

Verified Purchase

Ughhhhh

I JUST started taking this particular product therefore I have no opinion yet

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Jan 28, 2025
Donna
5 out of 5 stars review

Best Biotin!

Love this! But you cant find it now. Its out of stock! Please BRING IT BACK!!!

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Nov 21, 2025
Dennis
5 out of 5 stars review

My wife used this for years and said it worked well. Please bring it back.

Helpful?2R7QE1UDYBXJ7874213744
Jan 24, 2025
Wendy
5 out of 5 stars review

Best biotin

Best biotin ever, it's out of stock everywhere, please bring this product back

Helpful?2R7QE1UDYBXJ7874213744