N-acetyl Cysteine (NAC) is the more stable form of the amino acid L-Cysteine due to the additional acetyl molecule attached. L-Cysteine can directly participate in glutathione synthesis, whereas N-acetyl-L-cysteine must be first de-acetylated (i.e., broken down) before its incorporation to glutathione. Cell studies have shown L-Cysteine to be more effective in increasing cellular antioxidant glutathione levels. However, L-Cysteine is less stable than NAC so oxidizes more readily in the body. To help prevent or slow this process, 3x more ascorbic acid (vitamin C) should be consumed. So for every 1g L-Cysteine consider taking 3 g Vitamin C.

I read an article about a new study saying this will cure hangovers. Thoughts?

I read that article and bought a bottle to try. It works! Absolutely amazing hangover cure that actually works. I get hangovers from just 2 glasses of beer normally and now I get virtually none. I just take 2 tablets each time I drink and may take another if I go hard. If I drink too much and forget to take a 3rd tablet, I may have a very mild headache the next day, which is much improved from being out for the count all day like I used be after drinking. My boyfriend and roommate can also attest and ask me for some whenever we have some drinks together. All I can say is, just try it. You'll be amazed.

Is it made of human hair? If surprised read about L cysteine or E920(another name) on internet

Apparently synthetic L-Cysteine is expensive to manufacture, so human hair, duck feathers and pigs' bristles can be used. Whether NOW's L-Cysteine is a product of human hair it is not clear.

Is this product vegan?

It is most commonly derived from human hair.

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NOW Foods Supplements, L-Cysteine 500 mg with Vitamins B-6 and C, Structural Support*, 100 Tablets

NOW Foods Supplements, L-Cysteine 500 mg with Vitamins B-6 and C, Structural Support*, 100 Tablets

Product ID: 2576147

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Details

Brand
NOW Foods
Flavor
Unflavored
Primary Supplement Type
Vitamin B6
Unit Count
100 Count
Item Form
Tablet
Item Weight
6.4 ounces

🌿Non-GMO & allergen-free

💊500 mg potent dose

🧬Supports collagen & keratin

Description

✨ Elevate your glow game with science-backed structural support!

BEAUTY FROM WITHIN - Supports healthy hair, skin, and nails by stabilizing protein structures and promoting collagen formation.
POWER PACKED 500 MG DOSE - Maximize your body's structural support with a clinically effective amount of L-Cysteine per tablet.
CLEAN CONSCIOUS FORMULA - Non-GMO, soy-free, gluten-free, dairy-free, nut-free, halal, and kosher certified—perfect for mindful wellness.
SYNERGISTIC VITAMIN BOOST - Enhanced with Vitamins B-6 and C to supercharge metabolism and collagen synthesis for radiant skin and strong nails.
TRUSTED QUALITY ASSURANCE - Crafted by NOW Foods, a leader in supplements, ensuring purity and potency in every tablet.

NOW Foods L-Cysteine 500 mg tablets combine a powerful amino acid with Vitamins B-6 and C to support collagen production and protein stability, promoting healthy skin, hair, and nails. This non-GMO, allergen-free formula is designed for clean, effective supplementation to enhance your body's natural beauty and metabolic functions.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Excellent communication throughout the order process. Product is perfect.

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NOW Foods Supplements, L-Cysteine 500 mg with Vitamins B-6 and C, Structural Support*, 100 Tablets

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Description

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