However, the best supplement for boosting GSH levels is GSH itself
Other reported effects include: Headaches and dizziness Nausea and gastrointestinal discomfort Allergic reactions to B12 formulations (rare) If you experience symptoms suggesting a severe allergic reaction (difficulty breathing, severe rash, swelling of face/throat), seek emergency medical attention immediately by calling 999 or attending A&E
Song L, et al
The oral delivery format may have different bioavailability compared to injectable protocols, and dosing equivalency between administration routes is not definitively established through comparative pharmacokinetic studies
Stephen Bent, a professor of medicine, epidemiology, and biostatistics at the University of California, San Francisco, told Healthline
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