Calcium Gluconate is a mineral supplement. It’s chemical formula is [CH2OH(CHOH)4COO]2Ca. The white crystalline powder has a variety of nutraceutical and pharmaceutical application. In it’s oral form it can be used to prevent or treat low blood calcium levels and it it can also be used as an antidote for magnesium sulfate toxicity. Calcium gluconate gel preparations have been used to treat hydrofluoric acid burns. Furthermore, Calcium gluconate IVs are used as an antidote to Black Widow Spider bites.