L-Cysteine 500 mg

L-Cysteine 500 mg

Solgar4.6 (1,731 ratings)
Format:Capsule Quantity: 90 Capsule(s) · 90 servings
$19.69 $0.21 per serving
iHerbLowest$19.69Amazon$19.69Vitacost$20.73Pure Formulas$20.99Daily Vita$23.10

Product analysis

57 out of 100

L-Cysteine 500 mg offers low-cost cysteine for someone seeking that ingredient specifically. Inconsistent preparation details make form comparisons less certain.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The cysteine preparation is not consistently identified. That leaves form quality uncertain despite a separate identification of the hydrochloride source.

Ingredient Transparency63

The cysteine amount is clearly stated. Preparation details are incomplete, limiting comparison with consistently identified alternatives.

Value For Money100

The low cost relative to the cysteine amount offers favorable value. The single-ingredient format makes that comparison easy to interpret.

Customer Satisfaction82

Customer feedback is generally positive. A substantial review base gives the satisfaction pattern useful support.

Product Focus40

The single-ingredient formula stays centered on cysteine. Specific health-goal benefits remain uncertain from the available information.

Format
Capsule
Container
90 Capsule(s)
Per serving
$0.21
Customer rating
4.6 · 1,731 ratings
Report analysis

Ingredients

IngredientAmount per servingScore
L-Cysteine Hydrochloride
500 mg 91
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Sugar Free Vegetarian
Report overview
Cysteine · 500 mg OverallScore91
A- Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyA+ Value
Each serving provides 500 mg of L-Cysteine Hydrochloride, with a low cost for its cysteine content. The amount falls within a range commonly used for antioxidant support.
How this ingredient is rated

Active Ingredient Quality & Bioavailability85

L-cysteine hydrochloride is a stable salt form.
Cysteine Form Quality & Stability
L-cysteine hydrochloride is a stable salt form.

Dose, Safety & Label Transparency92

500 mg per serving is within the range commonly used for antioxidant support. The amount is clearly listed.
Cysteine Dosage Potency
500 mg per serving is within the range commonly used for antioxidant support.
Ingredient Transparency & Blend Disclosure
The cysteine amount is stated as 500 mg per serving.

Value100

The cost for the cysteine amount is low, based on the full serving price.
Price per 500mg of Cysteine
The cost for the cysteine amount is low, based on the full serving price.
View ingredientView products
91 Performance

L-Cysteine 500 mg

Bluebonnet
The hydrochloride form provides a stable cysteine source; its cysteine quality and focus provide a clearer option when the original already provides a substantial focused cysteine serving. The cysteine amount is substantial for targeted supplementation.
86 Performance

L-Cysteine 500 mg

California Gold Nutrition
Base L-cysteine is usable but less stable than a hydrochloride salt; its cysteine quality and focus provide a clearer option when the original already provides a substantial focused cysteine serving. The cysteine amount is substantial for targeted supplementation.
79 Performance

Vegan Hair Skin & Nails

NOW Solutions
Chelated minerals, structural amino acids, hyaluronic acid, and antioxidant vitamins form a coherent hair, skin, and nail formula with good serving value; it offers broader hair or nutrient support rather than a focused cysteine upgrade. High-dose biotin and horsetail without silica standardization are the main limitations; Biotin can distort thyroid, hormone, and cardiac blood tests, so use should be disclosed before laboratory work.
89 Budget

L-Cysteine 500 mg

NOW
The hydrochloride form provides a stable cysteine source; the lower serving cost improves economy when the original already provides a substantial focused cysteine serving. The cysteine amount is substantial for targeted supplementation.
93 Budget

L-Cysteine Powder

Source Naturals
The hydrochloride form provides a stable cysteine source; the lower serving cost improves economy when the original already provides a substantial focused cysteine serving. The cysteine amount is substantial for targeted supplementation.
79 Budget

Hair Skin & Nails

Swanson
MSM, well-identified horsetail, cysteine, choline, and PABA form a coherent beauty-focused blend at a low serving cost; the lower serving cost improves economy when the original already provides a substantial focused cysteine serving. Modest cysteine, choline, and PABA amounts limit depth, while excellent review volume supports confidence in general satisfaction.
64 Value

Hair Volume

New Nordic
Biotin, apple procyanidins, zinc, copper, horsetail, cysteine, and methionine form a broad hair-focused blend; it serves a broader goal but does not clearly improve value over the original. Basic mineral forms and modest amino-acid amounts limit depth, while concentrated biotin can interfere with several laboratory tests.
64 Value

Ultimate Hair & Nail Formula

Bluebonnet
A broad nutrient blend uses several useful forms, but many hair-focused amino acids and botanicals are modest; it serves a broader goal but does not clearly improve value over the original. The combined vitamin A amount and long-term vitamin B6 exposure are concerns for routine daily use; Formula breadth offers some value, though several small additions dilute the focus.
58 Value

Cell Formula

Nature's Way
The broad antioxidant blend uses several good nutrient forms, but cysteine makes only a small contribution and some antioxidant amounts are aggressive; it serves a broader goal but does not clearly improve value over the original. The high beta-carotene amount creates a specific concern for current or former smokers.
Report alternatives