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Anagen is the active growth phase, lasting two to seven years for scalp hair
Individuals with known hypersensitivity to ascorbic acid, those with a history of oxalate kidney stones, G6PD deficiency, iron overload disorders, or severe renal impairment should avoid this product
**Note:** This product is intended for research purposes only and not for human consumption
In fact, there was a 2022 case report presented a 22-year-old student who exhibited hyperpigmentation as the only symptom of B12 deficiency
Most people tolerate B12 well, even at high doses, as excess amounts are excreted through urine
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