The skin, however, adapts on a different timeline
Exploring approved weight loss options in 2026 While Retatrutide represents one of several next-generation weight loss drugs under investigation, licensed treatments are already available in the UK following clinical assessment
This is called energy compensation
Less-than-ideal responses can happen with any weight loss drug: Some people might lose weight fast, while others might not see much change
These might include: Pregnancy test : Essential first step for any woman of reproductive age with menstrual changes Blood tests : To assess hormone levels (FSH, LH, oestradiol, prolactin, thyroid function) and full blood count if bleeding is heavy STI screening : Particularly for unexplained intermenstrual or postcoital bleeding Pelvic ultrasound : If structural causes need to be excluded Review of medication : To ensure no drug interactions or other contributing factors Keep a menstrual diary noting cycle length, flow heaviness, and any associated symptoms
Many gastrointestinal effects are transient, but severe, persistent, or worsening symptoms should be reported to a healthcare professional
