Not verified evidencemineral
Zinc for Brittle Nails
Zinc is essential for nail matrix cell division and keratin protein synthesis. It regulates matrix metalloproteinases that remodel the nail plate and supports superoxide dismutase activity that protects nail cells from oxidative damage.
How strong is the research?
Not verified evidence
How much to take
15–30 mg
Zinc supports nail growth and repair. White spots on nails may indicate zinc deficiency.
When to take it
Best taken: empty stomach