NOW Foods L-Cysteine 500mg

100 tablets
NOW Foods L-Cysteine 500mg

L-Cysteine naturally supports healthy skin, nails, and hair. L-cysteine is considered a non-essential amino acid responsible for supporting the structures of proteins in the body and in formation of collagen, the basic component of skin, hair, and nails. Other L-cysteine benefits include increasing energy, stimulating the immune system, and exhibiting antioxidant properties.

Supplement Facts

Serving Size: 1 Tablet
Servings Per Container: 100


Amount Per Serving

% Daily Value

Vitamin C (as Ascorbic Acid)

60 mg


Vitamin B-6 (as Pyridoxine HCl)

10 mg


L-Cysteine (from L-Cysteine Hydrochloride)

500 mg


† Daily Value not established.

Other Ingredients: Microcrystalline Cellulose, Vegetarian Coating, Silicon Dioxide, Magnesium Stearate (vegetable source) and Citric Acid.

Suggested Use

Take 1 tablet 1 to 3 times daily as needed.


NOW Foods L-Cysteine can support healthy hair, skin, and nails. It helps maintain normal hair growth rate and makes hair stronger to prevent hair fall, split ends, and other common hair problems. Hair support can be very important in men with alopecia and baldness related to family history. This amino acid is suggested to reduce the effects of aging in the skin like wrinkles, dryness, and other skin impurities. It can also protect the skin from the effects of radiation from the sun and assists in healing the skin after burns or surgery. One of the amazing L-Cysteine benefits can be being an antidote to acetaminophen and aspirin overdose. L-Cysteine supplements are sometimes used as energy boosters because it can be transformed to glucose in the body.

L-Cysteine is an amino acid, the building blocks of protein. Of the kinds of amino acid, L-cysteine is classified as non-essential, which doesn’t need to be derived from exogenous sources because the body can produce sufficient amount of it. L-cysteine is essential in forming collagen, a fibrous protein that makes up the skin, nails, hair, and connective tissues like tendons and cartilages. It is also involved in the synthesis of substances with many biochemical functions such as glutathione, coenzyme A, taurine, and inorganic sulfates. Glutathione takes part in the body’s detoxification processes and glutathione depletion may lead to hepatic and kidney failure. Though L-cysteine naturally produced by the body itself, the quality of foods you eat still affects natural production of this important amino acid. Vegetarians can have reduced L-cysteine levels because they have low intake of foods with methionine and Cysteine like poultry, eggs, Brussels sprouts, red pepper,  etc. On the other hand, body builders may also need to take L-cysteine supplements as they are putting too much stress on their muscles during strenuous exercises. Immune compromised individuals may also benefit from L-cysteine supplements. NOW Foods L-Cysteine is added with Vitamin B6 and Vitamin C for stronger antioxidant properties, better immune boosting effects, and maximum hair, nails, and skin health.