At least one and preferably two complementary forms of contraception including a barrier method should be used. • Even if she has amenorrhea she must follow all of the advice on effective contraception. • She should be capable of complying with effective contraceptive measures. • She is informed and understands the potential consequences of pregnancy and the need to rapidly consult if there is a risk of pregnancy. • She understands the need and accepts to undergo pregnancy testing before, during and 5 weeks after the end of treatment. • She has acknowledged that she has understood the hazards and necessary precautions associated with the use of isotretinoin.