<prompt> The characteristic problem in females taking nor-ethisterone isIrregular bleedingThromboembolismHirsutismWeight gain  <response>: Norethisterone acetate is commonly used as an injectable steroid - NET-ENIt is a progesterone based contraceptive like DMPA and its side effect are similar to those of DMPA.The most frequent side effect is irregular bleeding.NET-EN is given in doses of 200 mg at 2 monthly intervals.Extra Edge: Combined injectable contraceptive. 