Is it religiously permissible for women to use medicines that delay menstruation in Ramadan? Is the fasting of a woman whose period is delayed due to the medication she has used valid?
Menstruation hinders fasting. The fasting observed in such a situation is not valid. The fasting observed is valid despite being due to medication since the menstruation does not happen. However, because of the fact that toxic substances are removed from the body with menstrual blood, using medicines that delays menstruation is not recommended.