NOW Foods NAC 600 mg with Selenium 250 Veg Capsules — Antioxidant Support, Non-GMO Vegetarian

NOW Supplements NAC 600 mg with Selenium is a vegetarian capsule formula combining N‑acetyl cysteine and selenium designed to support cellular antioxidant systems and maintain overall cellular health.*

This blend pairs NAC, a stable form of the amino acid cysteine, with the trace mineral selenium to help support key antioxidant processes in the body. NAC supplies a sulfur donor important for protein structure and for pathways that regenerate antioxidants, while selenium contributes to the activity of several selenoenzymes. NOW Foods provides this formula in 250 vegetable capsules, produced under GMP standards and free from common allergens.

How does NAC 600 mg with Selenium fit into a daily supplement routine?

You can integrate this product into most supplement schedules by taking the recommended serving as directed on the label. It is formulated for twice-daily use, offering sustained support across the day when paired with a balanced diet and healthy lifestyle choices. Avoid combining with other sulfur-containing supplements without professional guidance.

• Suggested use: 1 capsule twice daily, or as directed by a healthcare professional.
• Vegetarian capsules suitable for many dietary preferences.
• Non-GMO and free from common allergens like dairy, egg, soy, and nuts.

What are the main ingredients and why are they included?

The primary active ingredients are N‑acetyl cysteine (NAC) and selenium. NAC supplies a stable source of cysteine, a sulfur-containing amino acid that supports protein structure and antioxidant pathways. Selenium is included to support the function of selenium-dependent enzymes that play roles in cellular protection.

• NAC 600 mg per capsule — a stable cysteine derivative.
• Selenium — an essential trace mineral for selenoenzyme activity.
• Complementary formulation to support antioxidant systems.

Are there safety notes or quality assurances I should know?

NOW Foods follows GMP quality assurance protocols and conducts in-house ISO/IEC-accredited testing to verify potency and purity. An expected behavior for NAC is occasional dark or black speckling due to normal oxidation; this does not indicate contamination and the product remains safe to use. If you have medical conditions or take prescription medications, consult a healthcare professional before starting any new supplement.

• GMP quality assured; third-party rated A.
• Micro-testing performed; black spots may occur from oxidation but are harmless.
• Free from gluten, dairy, egg, nuts, and soy; Kosher certified.

How should I store and handle NOW NAC with Selenium?

Store capsules in a cool, dry place away from direct sunlight to preserve shelf life and minimize oxidative changes. Keep the bottle tightly closed and out of reach of children. Follow the use-by date on the packaging for peak potency.

• Keep in original container, tightly sealed.
• Store at room temperature, away from heat and moisture.
• Do not refrigerate; avoid exposure to direct sunlight.

Who is this for: NOW NAC 600 mg with Selenium is designed for adults seeking supplemental support for antioxidant pathways and cellular maintenance who prefer a vegetarian capsule and want a product made under rigorous quality controls. It is suitable for individuals avoiding common allergens and those who value independent manufacturing standards. Not intended for children; consult a healthcare professional if pregnant, nursing, or on medication.

Ingredients

N-Acetyl Cysteine (NAC) 600 mg, Hypromellose (Cellulose Capsule), Stearic Acid (Vegetable Source) and Citric Acid.