L-Cysteine Powder
Source Naturals
L-Cysteine Powder
4.3
★ ★ ★ ★ ★
(160 ratings)
Cysteine 900 mg
Score 95
A highly potent and cost-effective L-Cysteine powder offering 900mg per serving, ideal for maximizing immunity, detoxification, and skin/hair health benefits.
Quantity: 3 Ounce(s) • (83 servings)
Goals: flag Anti-Aging
leaderboard Score 95
A highly potent and cost-effective L-Cysteine powder offering 900mg per serving, ideal for maximizing immunity, detoxification, and skin/hair health benefits.
insights Analysis
Source Naturals L-Cysteine Powder provides a robust 900mg of L-Cysteine Hydrochloride Monohydrate per serving. This high dosage is significantly beneficial for maximizing the body's natural production of glutathione, a master antioxidant crucial for immune system strength, effective detoxification processes, and cellular protection. The powder form offers versatility, allowing users to easily adjust their intake or mix it into beverages, which can be particularly advantageous for those seeking higher therapeutic doses or looking to avoid capsules. While powders may be less convenient for on-the-go use, the cost-per-serving at $0.22 for such a substantial dose makes it an exceptional value. Online reviews and nutritionist recommendations frequently highlight L-Cysteine's efficacy in supporting these core health areas, and this product's purity and potency align well with those expectations.
- Highest L-Cysteine dosage per serving (900mg) among the analyzed products.
- Excellent cost-per-serving value for the high potency.
- Powder form provides dosing flexibility.
- Directly supports enhanced glutathione production.
- Powder form may be less convenient for some users compared to capsules.
- Potential for unpalatable taste if not mixed properly or if sensitive to amino acid taste.
- Individuals taking nitrates for heart conditions or certain blood pressure medications should consult a healthcare professional before use, as L-Cysteine can affect nitric oxide pathways.
- High doses may cause mild gastrointestinal discomfort in sensitive individuals.
$16.89($0.20 per serving)
 iHerb | $ 16.89 | |
 Amazon | $ 18.51 | |
 Vitacost | $ 18.89 |
Ingredients
| Ingredient | Amount per serving |
|---|---|
L-Cysteine | 900 mg |
Categories
Cysteine 98
As a pure L-Cysteine product with a high, effective dose, it stands out within the Cysteine collection for its targeted and potent delivery of this amino acid, making it ideal for those specifically seeking L-Cysteine benefits.
Goals
The 900mg L-Cysteine dosage provides ample precursor material for glutathione synthesis, significantly enhancing the body's antioxidant defenses and supporting robust immune cell function.
This high concentration of L-Cysteine directly supports the liver's primary detoxification pathways by boosting glutathione levels, which are essential for neutralizing and eliminating various toxins from the body.
L-Cysteine is a crucial building block for keratin, a primary protein in skin, and its role in glutathione production helps protect skin cells from oxidative damage, contributing to improved skin integrity and appearance.
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Hair Skin & Nails
Swanson
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★★★★★
(3284 ratings)
A highly economical choice at 11 cents per serving, it includes L-Cysteine (100mg) along with MSM and Horsetail, providing a broader range of beauty benefits for significantly less cost.
95 Value
L-Cysteine 500 mg
NOW
4.4
★★★★★
(18851 ratings)
Delivers an optimal L-Cysteine dose with added Vitamin C and B6 at a fraction of the cost per serving, making it an undeniable leader in value compared to the extremely expensive powder.
75 Value
L-Cysteine 500 mg
Solgar
4.5
★★★★★
(1545 ratings)
Although not the absolute cheapest, Solgar offers a reliable 500mg L-Cysteine supplement from a trusted brand at a significantly better price per serving than Source Naturals powder, ensuring solid value.
80 Value
Hair Skin & Nails
Swanson
4.7
★★★★★
(3284 ratings)
An excellent value option that combines a beneficial amount of L-Cysteine with other important beauty ingredients like MSM and Horsetail, providing multiple benefits at a very low price.
98 Performance
Hair Force
KAL
4.5
★★★★★
(257 ratings)
Contains 500mg L-Cysteine and a comprehensive blend of hair-supporting nutrients, offering a more complete and potent solution for hair health than a pure L-Cysteine product.
92 Performance
Vegan Hair Skin & Nails
NOW Solutions
4.7
★★★★★
(3911 ratings)
Combines L-Cysteine (250mg) with MSM, Hyaluronic Acid, and Biotin, providing a superior synergistic effect for skin and hair compared to a standalone L-Cysteine product.
95 Performance
L-Cysteine 500 mg
NOW
4.4
★★★★★
(18851 ratings)
Includes synergistic Vitamin C and B6, which enhance L-Cysteine's effectiveness for collagen synthesis and metabolism, making it functionally superior for the stated goals.