Key Health Benefits

Benefit	Description	PubMed Link
Antioxidant Capacity (via Glutathione)	L-Cysteine is the rate-limiting precursor for glutathione, a major cellular antioxidant. Supplementation with cysteine (e.g. as N-acetylcysteine) can significantly increase glutathione levels and reduce oxidative stress in humans.	PubMed
Skin, Hair, and Nail Health	L-Cysteine is a key building block of keratin, the structural protein in skin, hair, and nails. Cysteine supplementation (often as L-cystine) has been shown to strengthen hair (reducing hair loss) and improve skin appearance (e.g. lightening hyperpigmentation) in clinical trials.	PubMed
Liver Detoxification	N-acetylcysteine (NAC), a form of cysteine, supports liver detoxification by boosting glutathione, which neutralizes reactive toxins. In clinical studies on acute liver failure, NAC treatment significantly improved patient survival and liver function (it is also the standard antidote for acetaminophen poisoning).	PubMed
Immune Function	Cysteine supplementation can modulate immune responses through its antioxidant effects. It helps replenish glutathione in immune cells and reduce pro-inflammatory cytokines (such as TNF-α, IL-1β, IL-6), thereby potentially strengthening immune defense and lowering infection risk.	PubMed
Respiratory & Mucolytic Support	NAC acts as a mucolytic in the respiratory tract by cleaving disulfide bonds in mucus, thinning secretions and improving clearance. Long-term use in chronic bronchitis/COPD has led to significantly fewer acute exacerbations of respiratory illness in patients, supporting its benefit for lung health.	PubMed

Dosage Recommendation

Goal	Stack
Antioxidant Support	2 × 500 mg L-Cysteine daily; combine with 500 mg Vitamin C (morning) to further recycle glutathione and neutralize free radicals.
Skin, Hair & Nail Health	2 × 500 mg L-Cysteine daily; stack with 2.5 mg Biotin and 5 mg Zinc (with breakfast) to synergize keratin production.
Detoxification	2 × 500 mg L-Cysteine daily; add 500 mg Milk Thistle extract (with meals) to support additional hepatic phase II pathways.
Immune System Support	2 × 500 mg L-Cysteine daily; pair with 20 mg Zinc (with lunch) and 400 IU Vitamin D₃ (morning) for broad immune enhancement.
Respiratory/Mucolytic Aid	2 × 500 mg L-Cysteine midday and evening; combine with 600 mg N-acetylcysteine (NAC) 1 × day to further support airway glutathione.

Supplement Facts

Ingredients : L-Cysteine, Bulking Agent (INS 460(i)), Anticaking Agent(INS 341(iii)) & Vegetable Capsules shell (HPMC)(INS 464).

More Details

Unlock the Power of L-Cysteine for Your Health

 

L-Cysteine is a vital amino acid renowned for its numerous health benefits, particularly in promoting healthy hair, immune function, and heart health. With 220 mg of L-Cysteine in each serving, this supplement is your go-to solution for enhancing your body's natural defenses and beauty.

 

Key Benefits:

 

• Supports Healthy Hair: L-Cysteine plays a crucial role in synthesizing keratin, the protein essential for strong and vibrant hair.

   

• Antioxidant Support: As a powerful antioxidant, L-Cysteine helps combat oxidative stress, promoting overall wellness.

   

• Boosts Immune Function: Strengthen your immune system with L-Cysteine, essential for maintaining health and vitality.

   

• Heart Health: Contributes to cardiovascular health, helping you maintain a strong and healthy heart.

 

Quality You Can Trust:

 

Our L-Cysteine capsules are:

 

• Free from yeast, dairy, egg, corn, soy, and wheat.

   

• Free from sugar, starch, preservatives, and artificial colors, flavors, or fragrances.

   

• Manufactured in a facility registered with FSSAI & USFDA, ensuring the highest quality standards.

 

Perfect for You:

 

Embrace the benefits of L-Cysteine and take a proactive approach to your health. Elevate your beauty and well-being with our high-quality L-Cysteine supplement today!

When Will I See Results?

Goal	Expected Timeline
Antioxidant Capacity	1 – 2 weeks for measurable increases in plasma glutathione and reduction in oxidative stress biomarkers.
Skin, Hair & Nail Health	8 – 12 weeks for noticeable improvements in nail hardness, hair tensile strength, and reduced brittleness.
Detoxification	2 – 4 weeks for increased urinary excretion of toxin metabolites and improved liver enzyme markers (e.g., ALT/AST).
Immune Function	4 – 6 weeks for improved T-cell counts/function and fewer instances of minor respiratory infections.
Respiratory Support	1 – 2 weeks for reduced sputum viscosity and improved mucociliary clearance in chronic bronchitis or related conditions.

How to Maximise Results

Goal	Stack & Lifestyle Tips
Antioxidant Support	• Take with 500 mg Vitamin C to recycle oxidized glutathione.• Eat a diet rich in sulfur-containing vegetables (e.g., garlic, onions) to boost endogenous cysteine sources.
Skin, Hair & Nail Health	• Combine with Biotin (2.5 mg) and Zinc (5 mg) to support keratin fiber formation.• Ensure adequate dietary protein (1.0–1.2 g/kg/day) for overall amino acid balance.• Use topical moisturizing routines to complement improved structural proteins.
Detoxification	• Stack with Milk Thistle (500 mg) for additional support of hepatic phase II conjugation.• Drink ≥ 2 L water/day to facilitate toxin elimination.• Avoid processed foods and alcohol that burden hepatic detox pathways.
Immune Function	• Pair with Zinc (20 mg) and Vitamin D₃ (400 IU) to enhance innate and adaptive immunity.• Practice good sleep hygiene (7–8 h/night) to support immunoregulatory functions.
Respiratory Support	• Combine with N-acetylcysteine (600 mg) once daily to further elevate airway glutathione.• Perform daily steam inhalation to help loosen mucus.• Avoid exposure to environmental pollutants and smoke.

What to Avoid

Substance / Habit	Reason to Avoid	Spacing Tip
High-Dose Protein (> 2.5 g/kg/day)	Excessive dietary protein can compete for cysteine uptake and may increase homocysteine if not balanced with B vitamins, reducing L-cysteine’s effectiveness.	Maintain moderate protein intake (1.0–1.5 g/kg/day).
Concurrent Heavy Alcohol Use	Alcohol depletes glutathione and increases oxidative stress, negating antioxidant benefits of L-cysteine supplementation.	Limit alcohol to ≤ 1 drink/day (women) or ≤ 2 (drinks/day men).
Unmonitored Use with Nitroglycerin	L-Cysteine can enhance nitric oxide production, potentially leading to additive hypotensive effects with nitrates.	Consult a physician; monitor blood pressure if combining.
Taking on Empty Stomach (Sensitive Users)	In some individuals, high-dose cysteine may cause mild gastrointestinal upset or nausea.	Take with meals or a small snack to minimize GI discomfort.
Vitamin B6 Deficiency	Pyridoxine (B6) is required for cysteine metabolism. Without adequate B6, cysteine may not efficiently convert to glutathione, reducing efficacy.	Ensure B6 intake ≥ 1.3 mg/day through diet or supplementation.

Third Party NABL Lab Report

Third Party NABL Lab Report for L-Cysteine :

 

Click here to view the report