L-Cysteine 500 mg
California Gold Nutrition
L-Cysteine 500 mg
4.6
★ ★ ★ ★ ★
(1735 ratings)
Cysteine 500 mg
Score 78.0
A decent 500mg L-Cysteine capsule from a popular brand, providing effective support for various health goals, but less cost-effective compared to superior alternatives.
Quantity: 60 Capsule(s)Servings size: 1 Capsule(s) (60 servings)
Selected goals:
Other goals:
Immunity
Detoxification
Skin Health
Hair Health
leaderboard Score 78.0
A decent 500mg L-Cysteine capsule from a popular brand, providing effective support for various health goals, but less cost-effective compared to superior alternatives.
insights Analysis
California Gold Nutrition L-Cysteine 500 mg provides a straightforward 500mg dose of L-Cysteine in an easy-to-swallow capsule. This dosage is widely regarded as effective for supporting the body's production of glutathione, thereby contributing to robust immunity, efficient detoxification, and the structural integrity of skin and hair. As a brand often associated with online retailers like iHerb, California Gold Nutrition is generally recognized for its value and accessibility. However, at $0.30 per serving, this product is more expensive than highly competitive options such as NOW L-Cysteine (ID: 139642), which offers the same 500mg dose plus beneficial cofactors (Vitamin C and B6) for only $0.12 per serving. This price discrepancy makes the California Gold Nutrition option less attractive from a pure value perspective, though it remains a solid and reliable choice for those prioritizing brand familiarity.
- Convenient capsule form for ease of use.
- Provides a standard and generally effective 500mg L-Cysteine dose.
- From a widely recognized and accessible brand.
- Higher price per serving compared to other 500mg L-Cysteine products, especially those with added cofactors.
- Does not include synergistic vitamins often found in more optimized L-Cysteine formulations.
- L-Cysteine can potentially interact with certain medications, including those affecting blood pressure or containing nitrates; consult a healthcare provider if taking such medications.
$18.22($0.30 per serving)
 iHerb | $ 18.22 | |
 Amazon | $ 18.22 |
bolt Effectiveness for goals
Cysteine is a precursor to glutathione, one of the body's most powerful antioxidants. By supporting glutathione levels, it helps protect cells from oxidative damage caused by free radicals. This contributes to overall cellular health and function.
Cysteine's effectiveness in reducing oxidative stress stems from its role as a precursor to glutathione, a major endogenous antioxidant. By boosting glutathione levels, it helps scavenge free radicals and mitigate cellular damage. This process is fundamental to maintaining cellular integrity.
Cysteine is a semi-essential amino acid, meaning the body can produce it from other amino acids like methionine, but it can also be obtained through diet or supplements. It plays a crucial role in protein synthesis and various metabolic functions. Cysteine is a precursor to glutathione, a powerful antioxidant.
As N-acetylcysteine (NAC), a derivative of Cysteine, it is widely recognized for its mucolytic properties. It helps thin mucus in the airways, making it easier to clear. This action can support the health of the respiratory tract.
Cysteine is a key component of glutathione, one of the body's most important antioxidants. By providing the building block for glutathione synthesis, Cysteine helps the body combat oxidative stress. This action supports cellular health and protection against free radicals.
schedule Dosage, timing & forms
L-Cysteine is the naturally occurring amino acid, while NAC is a modified form of Cysteine that has an acetyl group attached. NAC is generally more stable and better absorbed by the body, making it a more popular choice for supplementation. Both forms serve as precursors to glutathione.
L-Cysteine is an amino acid, while N-Acetyl Cysteine (NAC) is a modified form of L-Cysteine with an acetyl group attached. NAC is generally preferred as a supplement because it is more stable and better absorbed by the body. It also serves as an efficient precursor for glutathione synthesis, which is a key antioxidant.
The most common and widely available supplemental form is N-Acetyl Cysteine (NAC), which is a precursor to L-Cysteine and glutathione. L-Cysteine is also available, often found in combination supplements. These forms differ in their chemical structure and how they are utilized by the body.
The most common supplemental form of Cysteine is N-acetyl Cysteine, often abbreviated as NAC. L-Cysteine is another form available in supplements, but NAC is generally preferred due to its higher bioavailability and stability. These forms are typically found in capsules, tablets, or powders.
While specific upper limits can vary by individual and product, daily doses of N-Acetyl Cysteine (NAC) typically do not exceed 1800 mg for general use without medical supervision. Much higher doses have been used in clinical settings, but this is always under the guidance of a healthcare professional. Adhering to label instructions is crucial.
health_and_safety Safety & interactions
Yes, Cysteine, particularly NAC, may interact with certain medications. It could potentially enhance the effects of vasodilators like nitroglycerin, leading to low blood pressure. It may also interact with some immunosuppressants or blood thinners, so consult a doctor if taking such medications.
Cysteine, especially N-acetylcysteine (NAC), is generally well-tolerated. Some individuals may experience mild gastrointestinal upset, such as nausea, vomiting, or diarrhea. Less common side effects can include skin rashes or headache.
There isn't a universally established "safe upper limit" for Cysteine or NAC for the general population. Doses used in clinical studies vary significantly, often ranging from 600 mg to several grams daily for specific conditions. Exceeding product label recommendations without professional guidance is not advised.
While Cysteine is naturally present in the body, supplemental use during pregnancy or breastfeeding requires caution. Limited research exists on high-dose Cysteine supplementation specifically in these populations. Individuals should consult a healthcare provider before use.
Individuals with certain pre-existing conditions, such as asthma (especially sulfite sensitivity), should use Cysteine (NAC) with caution. Those prone to kidney stones, particularly cysteine stones, should consult a doctor before supplementing. High doses may also be a concern for individuals with bleeding disorders.
Ingredients
| Ingredient | Amount per serving |
|---|---|
| L-Cysteine | 500 mg |
Categories
Cysteine 90.0
This product delivers a clear and effective dosage of L-Cysteine as its sole active ingredient, making it a strong contender within the Cysteine collection for targeted supplementation.
Goals
Immunity 88.0
The 500mg L-Cysteine dose effectively contributes to glutathione synthesis, which is vital for bolstering the immune system's defense mechanisms and overall cellular health.
Detoxification 88.0
This dosage is sufficient for providing a key precursor to glutathione, thereby supporting the liver's capacity to detoxify harmful substances and maintain metabolic balance.
Skin Health 85.0
L-Cysteine at 500mg aids in the formation of keratin, crucial for healthy skin structure, and its antioxidant role helps protect skin cells from environmental damage and promote a healthy complexion.
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