We often witness this in our b12 support group
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CrossRef Nutrition in MASLD: a patient focused, evidence-based clinicians guide Katrina Pekarska, Paul N Brennan, Dana Ivancovsky Wajcman, Jennifer Towey, Leah Cox, Katie Weatherby, Stuart McPherson, Jonathan Stine, Jose Willemse, Wenhao Li, William Alazawi, Jeffrey V Lazarus, Richard Parker Frontline Gastroenterology .2026
Ecotoxicol Environ Saf 302:118675
So theres no 90-day supplies or other extended fills through this program
However, its important to note that NAC can cause stomach upset, nausea, vomiting, and diarrhea if taken on an empty stomach, so it should be taken with food to lessen the likelihood of these reactions