Characteristic DMPA NET-EN Monthly Injectables
Time between injections 3 months 2 months 1 month
How early or late a client can have the next injection 2 weeks before or 4 weeks after scheduled injection date. 2 weeks before or after scheduled injection date. 7 days before or after scheduled injection date.
Injection technique Deep intramuscular (IM) injection into the hip, upper arm, or buttock.
Subcutaneous injection into back of upper arm, abdomen, or front of thigh.
Deep intramuscular injection into the hip, upper arm, or buttock. May be slightly more painful than DMPA-IM. Deep intramuscular injection into the hip, upper arm, buttock, or outer thigh.
Typical bleeding patterns in first year Irregular and prolonged bleeding at first, then no bleeding or infrequent bleeding. About 40% of users have no monthly bleeding after 1 year. Irregular or prolonged bleeding in first 6 months but shorter bleeding episodes than with DMPA. After 6 months bleeding patterns are similar to those with DMPA. 30% of users have no monthly bleeding after 1 year. Irregular, frequent, or prolonged bleeding in first 3 months. Mostly regular bleeding patterns by 1 year. About 2% of users have no monthly bleeding after 1 year.
Average weight gain 1–2 kg per year 1–2 kg per year 1 kg per year
Pregnancy rate, as commonly used About 4 pregnancies per 100 women in the first year. Assumed to be similar to DMPA. About 3 pregnancies per 100 women in the first year.
Average delay in time to pregnancy after stopping injections 4 months longer than for women who used other methods. 1 month longer than for women who used other
methods.
1 month longer than for women who used other methods.