Tag: Missed doses

Research indicates that while perfect use of the birth control pill is 99% effective, the reality of typical use drops that rate to about 91%. If you're asking, **Why is my contraceptive pill not working?**, the answer often involves user error or external factors that disrupt its hormonal action.

Vyvanse (lisdexamfetamine) is a long-acting prodrug, which means it doesn't become active until processed by the body's red blood cells. This unique mechanism is why taking the medication consistently, as prescribed, is a fundamental factor for stable symptom management in conditions like ADHD and BED.