Characteristic |
Combined Oral Contraceptives |
Monthly Injectables |
Combined Patch |
Combined Vaginal Ring |
How it is used |
Pill taken orally. |
Intramuscular injection. |
Patch worn on upper outer arm, back, abdomen or buttocks. Not on breasts. |
Ring inserted in the vagina. |
Frequency of use |
Daily. |
Monthly: Injection every 4 weeks. |
Weekly: Patch is changed every week for 3 weeks. No patch worn 4th week. |
Monthly: Ring kept in place for 3 weeks and taken out during 4th week. |
Effectiveness |
Depends on user's ability to take a pill every day. |
Least dependent on the user. User must return to clinic every 4 weeks (plus or minus 7 days). |
Requires user's attention once a week. |
Depends on user keeping the ring in place all day, not leaving it out for more than 3 hours at a time. |
Bleeding patterns |
Typically, irregular bleeding for the first few months and then lighter and more regular bleeding. |
Irregular bleeding or no monthly bleeding is more common than with COCs. Some also have prolonged bleeding in the first few months. |
Similar to COCs, but irregular bleeding is more common in the first few cycles than with COCs. |
Similar to COCs, but irregular bleeding is less common than with COCs. |
Privacy |
No physical signs of use but others may find the pills. |
No physical signs of use. |
Patch may be seen by partner or others. |
Some partners may be able to feel the ring. |