I want to start oral contraceptives. i am 21. which is the safest oral contraceptive, i.e. causes least side effects and is very effective?

See a Provider: We are lucky that there are so many oral contraceptives to choose from. There are ones that give light flows, and reduced frequency of flows. Since you have so many options, you should spend some time exploring them with your provider. Low dose pills are popular and can protect you against cysts, cancer and of course , unwanted pregnancy and painful periods.