<prompt> Daily release of ho rmonefrom mirena is -10 microgram20 microgram30 microgram40 microgram  <response>: Ans. is b i.e., 20 microgram Mirena:o It is levennogesterol releasing intrauterine contraceptive device system.o It measures about 32 x 32 mm.o It has a life span of 5 yearso It contains 52 mg of levenogesterol.o It releases 20 meg day of levenogesterol. 