During pregnancy, the safety of drug usage is usually measured with its effects on BBB (Blood-Brain barrier). It is the connection of the mother with the baby inside. If a drug can cross the barrier and produce changes on the foetus (baby inside the mother’s womb), it is considered unsafe to use during pregnancy, and its usage should be stopped or limited. No studies have proven Clenbuterol and its androgenic effects directly on the child during pregnancy but the changes in the mother might affect the growth.