Any combination claim would require direct evidence for the exact compounds, ratio, formulation, route, dose, analytical method, safety profile, study population, and condition being studied
For example, one person wrote on a health forum, I started taking glutathione supplements a few weeks ago, and Ive been experiencing terrible headaches ever since
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Some of the serious side effects of Vitamin B12 include serous allergic reaction, narrowing or blocking of blood vessels, thrombocytosis (a disorder where your body produces too many platelets), low potassium levels in body, pulmonary edema (a condition where there is excess fluid in the lungs) and congestive heart failure