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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The characteristic problem in females taking nor-ethisterone is
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The correct answer is  Norethisterone acetate is commonly used as an injectable steroid - 'NET-EN'
It 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.