When it comes to supplements, taking high doses of vitamin C at the same time as your B12 shot might slightly lower the amount of B12 your body can use, but this is more relevant for oral B12 supplements than injections
If you are naturally born with dark skin this product will remove excessive tan or pigmentation you might have but will not make you fair
Miller BA, Kolonel LN, Bernstein L, Young JL, Swanson GM, West D, Key CR, Liff JM, Glover CS, Alexander GA, et al
[72] As a best practice with all interventions used for Hashimotos, I recommend tracking symptoms, testing thyroid hormone levels, and testing thyroid antibodies after starting new therapies
Richards, O
Boughton CK, et al