Just this morning I noticed a rotten egg smell when I opened my bottle that is still good until November. Not sure if they always have this odor?

That is normal! I take an NAC supplement that is only 600mg and it smells like sulfur right after opening as well. So no reason to be concerned.

is the source vegan? (not asking about capsule or tablet but about NAC)

I do not know, but I am recently diagnosed with COPD and this seems to help me breathe easier.

Designs for Health is NSF GMP registered.

Does this product contain corn or rice ingredients?

The "other ingredients" (other than NAC) are "cellulose (capsule), stearates (vegetable source), microcrystalline cellulose." My doctor recommended this brand as a good one because they don't use a lot of fillers or other questionable ingredients.

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💥 Elevate recovery and detox like a pro—because your body deserves the best.

TRUSTED BY EXPERTS - Clinically recommended by top functional medicine pros, the go-to brand for serious wellness seekers.
POWER YOUR RECOVERY - 900mg of NAC supports faster muscle repair post-workout, so you bounce back stronger.
CLEAN CONSCIOUS FORMULA - Non-GMO, gluten-free, and vegetarian-friendly—because what you put in matters.
ULTIMATE ANTIOXIDANT BOOST - Precursor to glutathione, your body’s top detox and defense molecule, keeping you resilient daily.
BREATHE EASY PERFORM BETTER - Promotes healthy mucus viscosity to maintain clear, normal breathing during peak performance.

Designs for Health NAC delivers a potent 900mg dose of N-Acetyl-L-Cysteine per capsule, a powerful glutathione precursor that supports muscle recovery, detoxification, and healthy lung function. This non-GMO, gluten-free, and vegetarian-friendly supplement is trusted by functional medicine practitioners to help maintain optimal wellness and workout performance.

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