GummyTalk Forum

Hey everyone, I've been taking NAC gummies for a few months now and just opened a new bottle. They look different from my last batch - some are darker in color (like a deeper orange instead of light yellow) and they feel harder when I bite into them. A couple were even stuck together in the bottle. Has anyone else experienced this? Are they still safe to consume or should I toss them? Worried about wasting money but also don't want to eat something that's gone bad.

Med student here - NAC (N-acetylcysteine) is relatively stable, but gummy formulations can degrade with moisture exposure or temperature changes. The color change and hardening suggest possible oxidation or sugar crystallization (sugar bloom). While it might not be harmful, the efficacy could be reduced. Check the expiration date and storage conditions. If they smell off or have mold, definitely discard. Personally, I'd contact the manufacturer for a replacement.

lol my pre-workout gummies do this all the time! I keep them in my gym bag and sometimes they melt together in the heat. The hardening is usually just sugar bloom from humidity changes - still safe but texture sucks. If they're not moldy or smell weird, I still take them. Maybe store your next bottle in a cool, dry place? NAC is great for recovery tho, don't stop taking it!

As someone who's always rushing between meetings, I've had similar issues with supplements left in my car or desk. The sticking together happens with temperature fluctuations. I agree with checking expiration dates - if they're within date and no visible mold, they're probably fine but might taste weird. I'd prioritize safety over convenience though. Maybe take a photo and email the company? They might send a new batch.

Another med student perspective - NAC's sulfur content might contribute to color changes over time. The hardening is likely moisture loss or sugar recrystallization. While not necessarily dangerous, degraded supplements may have reduced bioavailability. If you experience any gastrointestinal discomfort after taking them, discontinue use. For optimal benefits, proper storage in airtight containers away from light/heat is key. When in doubt, replace them.