Although many parents do use a microwave to heat bottles, then vigorously shake the bottle and test the formula before giving it to their baby, it still isn't a safe practice. (verywellfamily.com)
I also didn't give it to my baby in a bottle, because «nipple confusion» apparently. (mom.me)
If given to the baby at a young age or within a short period of time it can lower the mother's milk supply, which operates on supply and demand. (amotherinisrael.com)