Abdominal pain, nausea, vomiting, diarrhea, and vertigo have also been reported, and one trial found that the incidence of nausea, vomiting, and vertigo was dose-dependent (77)
Some patients report a mild boost in alertness or increased urination
Investigations are guided by clinical suspicion rather than routine panels: for example, thyroid function tests and ferritin may be checked if symptoms suggest deficiency or thyroid disease, while an androgen profile may be appropriate in women presenting with menstrual irregularity, hirsutism, or acne
Given that radical production in muscle fibers can damage cellular components, it is not surprising that muscle fibers contain protective molecules called antioxidants that defend against radical-mediated damage