Triregol is a type of oral contraceptive pill, commonly referred to as the birth control pill, which is used to prevent pregnancy. It is a combined hormonal contraceptive, meaning it contains two types of hormones: estrogen and progestogen. Specifically, Triregol is a triphasic pill, which means that the dosage of hormones varies at three stages throughout each cycle of 21 days, more closely mimicking the body's natural hormonal fluctuations. This variation is designed to minimize side effects while effectively preventing pregnancy. Users take a pill daily for 21 days followed by a 7-day break during which a withdrawal bleed, similar to a period, usually occurs. As with all contraceptives, it's important to follow the instructions provided by a healthcare professional to ensure maximum effectiveness and to discuss any potential side effects or interactions with other medications.