The ancient Maya processed their corn by boiling it with snail shells or with white lime. The process, known today as nixtamalization, made the corn's niacin available.
Depo-Provera can cause irregular bleeding and other side effects. Irregular bleeding The most common side effect of the birth control shot is irregular bleeding.
The other side effects of Depo Provera contraceptive injection are as follows: 1  Abdominal pain, constipation, diarrhea. 2  Nausea, vomiting, disturbed liver functions, jaundice. 3  White vaginal discharge, pelvic pain, vaginal infections, cervical erosions.  Adrenergic effects - sweating, fine tremors, calf cramping.