NOW Foods, L-Cysteine, 500 mg, 100 Tablets
Strong nails, resilient hair, and healthy-looking skin all share something in common: they depend on a steady supply of structural amino acids. NOW Foods, L-Cysteine, 500 mg, 100 Tablets delivers this sulfur-containing amino acid in a simple, easy-to-add daily tablet.
This NOW Foods formula is built around cysteine’s natural role in the body — it feeds into glutathione production and helps stabilize protein structure, which is part of why it’s so closely tied to keratin, the protein that makes up hair and nails.
Benefits
- Supports healthy-looking hair, skin, and nails
- Plays a role in collagen formation
- Contributes to glutathione and antioxidant support in the body
- Involved in methionine and taurine metabolism
- Non-GMO, vegetarian/vegan, halal and kosher
Active Ingredients
- L-Cysteine – 500 mg per tablet
How to Use
Take 1 tablet, 1 to 3 times daily as needed, preferably with food to help minimize stomach upset. Store in a cool, dry place after opening.
Best Suited For
Adults looking for extra structural and antioxidant support for hair, skin, and nail health.
Warnings
For adults only. Consult a physician if you are pregnant, nursing, taking medication, or have a medical condition. Keep out of reach of children.
FAQ
Q: What is L-Cysteine used for?
A: It’s an amino acid the body uses to support hair, skin, nail structure, and antioxidant processes like glutathione production.
Q: Should I take it with food?
A: Yes, taking it with food is generally recommended to help reduce the chance of stomach upset.
Q: Is this vegan-friendly?
A: Yes, this formula is vegetarian and vegan.
Q: Can I combine it with vitamin C?
A: Many people pair amino acid supplements with vitamin C, though it’s best to check with a healthcare provider about your specific routine.
Q: How many tablets can I take per day?
A: The label suggests up to 3 tablets daily as needed; don’t exceed the recommended amount without professional guidance.

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