Both injectables prevent pregnancy very well. Both change vaginal bleeding for most women often more bleeding or irregular bleeding at first and then no bleeding at all after a year. These changes are not harmful. They are not signs of serious health problems or pregnancy. Most women gain weight while using injectables.
Some women notice headaches, dizziness, breast tenderness, moodiness, nausea, or acne.
Women who use injectables can become pregnant when they stop having injections. Becoming pregnant may take several months longer than usual, however. Then she should use condoms whether or not she chooses injectables. If her partner will not use condoms, she should use spermicides. H HELP clients choose a method that suits them.