NAC N-Acetyl Cysteine 600 mg with Selenium: Glutathione, Liver Detox, Respiratory Comfort – Powerful Antioxidants for Immunity and Daily Energy

NAC N-Acetyl Cysteine 600 mg with Selenium, NOW Foods is a premium formula designed to support cellular protection, redox balance and the body's natural detoxification mechanisms. Each serving provides 600 mg N-acetylcysteine (NAC) – the stable and well-absorbed form of cysteine, direct precursor of glutathione – alongside 25 mcg selenium (45% RDA) in the form of L-selenomethionine, an essential cofactor for antioxidant enzymes such as glutathione peroxidase. The synergy between NAC and selenium amplifies the body's ability to neutralize free radicals, maintain efficient liver function and support respiratory comfort, especially during demanding periods or in polluted environments.

Detailed Benefits of NAC N-Acetyl Cysteine 600 mg with Selenium

• Glutathione recharging – intracellular antioxidant shield

Glutathione (GSH) is the main antioxidant produced inside cells. NAC provides the limiting amino acid – cysteine – necessary for GSH synthesis, while selenium supports enzymes that use glutathione to neutralize reactive oxygen species.
✅ Increases natural antioxidant defense capacity
✅ Protects lipids, proteins and DNA against oxidative stress
✅ Contributes to maintaining vitality and mental clarity during busy days

• Gentle detox and liver health

The liver is the center of the body's detoxification "facilities." By supporting glutathione levels and selenium-dependent enzymes, NAC helps conjugate and neutralize reactive compounds resulting from daily metabolism and environmental factor exposure.
✅ Support for natural liver detoxification processes
✅ Metabolic balance facing daily demands
✅ Sensation of metabolic "cleanliness" and more consistent energy

• Respiratory comfort and secretion fluidity

N-acetylcysteine is recognized for its mucolytic properties: it contributes to reducing mucus viscosity, making it easier to eliminate. Additionally, supporting glutathione in respiratory tract helps protect exposed tissues.
✅ Helps fluidify secretions for easier breathing
✅ Support for respiratory epithelium during cold or polluted periods
✅ Daily comfort for those exposed to dry air or temperature variations

• Immunity and seasonal resilience

Immune system status is closely linked to antioxidant balance. NAC, alongside selenium, contributes to maintaining immune response within normal parameters, providing a biochemical "background" conducive to the body's natural vigilance.
✅ Supports normal immune function
✅ Helps maintain integrity of immune cells under oxidative stress
✅ Antioxidant reserves ready for "intervention" during demanding season

• Exercise performance and recovery

Intense physical effort increases free radical production at muscular level. By increasing glutathione availability, NAC can contribute to protecting muscle fibers and more efficient recovery between training sessions.
✅ Resilience to training-induced oxidative stress
✅ Support for energy balance and recovery sensation
✅ Excellent fit in fitness routines and active lifestyle

• Neuronal redox balance and clarity

The brain is particularly sensitive to oxidative imbalances. Adequate glutathione status supported by NAC and selenium provides optimal environment for efficient neuronal activity and "clarity" state throughout the day.
✅ Support for daily cognitive functions
✅ Contribution to maintaining concentration during demanding periods
✅ Subjective sensation of focus and productivity

• Skin, hair and nails – structural support

Cysteine is rich in sulfur, a key element in disulfide bonds that give resistance to keratin in hair and nails. Through NAC intake, the formula provides necessary "raw material," while antioxidant protection supports healthy skin appearance.
✅ More resilient hair and stronger nails
✅ Support for skin comfort and tone
✅ Beauty from within through redox balance

• General well-being and cellular "longevity"

A well-supported antioxidant system favors proper functioning of mitochondria and essential enzymes for metabolism. Maintaining glutathione at optimal levels is associated with cellular resilience and daily performance.
✅ Cellular protection with "behind-the-scenes" impact
✅ Smoother perceived energy throughout the day
✅ Supporting processes related to homeostasis and balance

• Why this formula: NAC + selenium synergy

NAC (600 mg) rapidly replenishes cysteine needed for glutathione synthesis, while selenium (25 mcg) as L-selenomethionine participates in forming antioxidant selenoproteins. Together, they offer coherent redox protection, with coverage at both cellular and enzymatic levels.
✅ Dual approach: substrate + enzymatic cofactor
✅ Efficiency in scenarios with increased oxidative stress
✅ Suitable for long-term use in wellness routines

• Who is this formula for?

This formula is suitable for adults who want advanced antioxidant support, respiratory comfort, liver and immune balance, whether they lead active lives, work in demanding environments or aim for a coherent health maintenance program.
✅ Active people and recreational athletes
✅ Professionals exposed to stress or pollutants
✅ Anyone seeking a solid antioxidant foundation in daily routine

NAC N-Acetyl Cysteine 600 mg with Selenium, NOW Foods is a powerful ally for cellular protection and well-being, bringing together two essential pieces of the antioxidant "puzzle": the substrate for glutathione and the enzymatic cofactor. For clearer days, easier breathing and long-term redox balance.



 

Directions for use

Take 1 capsule twice daily.



 

Other ingredients

Hypromellose (cellulose capsule), stearic acid (vegetable source), citric acid and microcrystalline cellulose.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.
Produced in a GMP facility that processes other ingredients containing these allergens.
Manufactured and quality tested in USA with ingredients from global sources.

Warnings

Store in a cool, dry place after opening.
For adults only. Consult physician if pregnant/nursing, taking medications or have a medical condition. Keep out of reach of children.
Do not consume the included freshness packets.
Keep freshness packets in bottle until empty. Keep bottle tightly closed at all times between uses. Natural color variation may occur in this product when exposed to air. Spots may appear on capsule, but do not affect product quality.