> In fact, it is unlikely to do anything at all Excess vitamin C breaks down L-tyrosine, which could contribute to thyroid and/or neurological issues in indivi

> In fact, it is unlikely to do anything at all Excess vitamin C breaks down L-tyrosine, which could contribute to thyroid and/or neurological issues in individuals with L-tyrosine deficiency (L-tyrosine is a precursor to thyroid hormone and L-dopa which is the primary building block of dopamine). Disclaimer: I'm not a doctor.