Yes, clinical studies show that semaglutide (Wegovy) and liraglutide (Saxenda) do not have clinically relevant effects on oral contraceptive exposure, so no routine additional precautions are required
Yes, multi-dose pens like Ozempic and Victoza have specific in-use storage periods after first use (up to 56 days and 30 days respectively), while single-dose devices like Wegovy, Trulicity, and Mounjaro are discarded immediately after injection

When to Speak with Your GP About Fertility Concerns Patients using or considering weight loss injections should discuss fertility implications with their GP, particularly in the following circumstances: Planning to conceive within the next 12 months early discussion allows appropriate timing of treatment cessation and optimisation of pre-conception health Experiencing persistent menstrual irregularities beyond the first three months of treatment whilst some cycle changes are expected, prolonged amenorrhoea warrants investigation Existing fertility concerns or previous difficulty conceiving a comprehensive fertility assessment may be needed alongside weight management Considering fertility preservation individuals planning delayed parenthood may wish to discuss options such as egg or sperm freezing Unexplained changes in libido or sexual function though not common, any concerning symptoms should be evaluated Your GP can provide personalised advice based on your individual circumstances, medical history, and reproductive goals

Skipping titration steps increases the risk of severe nausea, vomiting, diarrhea, and constipation
While definitive causal reduction in cancer risk with GLP-1 therapies is not established, the cardiovascular and metabolic benefits of significant weight loss may outweigh theoretical cancer concerns for many patients
Can be administered at home