Not particularly: If you want to make your own just save your nail clippings & grind them up to use in a drink. They are just another protein source. Supplements are not regulated nor do they have to prove their many claims in the USA. Use if you wish & believe the claims if you wish.
Answered 3/3/2020
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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