Does Mounjaro Affect Sex Drive?

Neither libido changes nor sexual dysfunction appear prominently in the official prescribing information for Mounjaro or Wegovy as commonly reported side effects. The clinical picture is complex, and several overlapping factors may contribute to any change a person notices:

• Fatigue and nausea — these are among the most commonly reported side effects of both tirzepatide and semaglutide, particularly in the early weeks or after a dose adjustment. Feeling unwell or depleted can naturally dampen interest in sex, though this often eases as the body adjusts.
• Hormonal shifts linked to weight change — significant weight loss can influence sex hormone levels. For some people this may improve libido over time; for others, changes during active weight loss may feel disruptive. Research into this area is ongoing.
• Improved wellbeing — many people report better energy, mood, and confidence as their journey progresses, which some associate with a positive effect on sex drive.
• Reduced "food noise" — the quietening of appetite-related thoughts may free up mental space, though individual experiences vary widely.

In women specifically, some people ask whether Mounjaro or Wegovy affects sex drive alongside other hormonal changes. If you are also experiencing changes to your cycle, it may be worth reading about how Mounjaro may affect your period or how Wegovy can affect periods, as hormonal changes linked to weight loss can have wide-ranging effects.

Questions about fertility are separate but related — if this is a concern for you, how Mounjaro may affect fertility covers that topic in more detail.

For a broader look at how these medicines work in the body, how Mounjaro works explains the underlying mechanism in plain language.

If you are experiencing significant changes to your sex drive — whether a decrease or an unexpected increase — and it is affecting your wellbeing, it is worth raising with your prescriber or doctor. They can review your full picture and consider whether anything else might be contributing.

Changes in mood, energy, and wellbeing — all of which can be intertwined with libido — are exactly the kind of subjective experience that is easy to notice in the moment but hard to recall clearly weeks later when you are talking to your prescriber.

GLP Trackr's daily check-in lets you log mood and energy in around 30 seconds each morning, building a personal record of how you feel over time. If you notice a pattern — say, that low energy after a dose tends to lift by day three, or that your mood improves as the weeks go on — that context is genuinely useful to bring to a medical appointment rather than relying on memory alone.

Alongside mood and energy, you can use the side-effect tracker to log anything else you notice — fatigue, nausea, or other changes — so you have a clear, timestamped record to discuss with your prescriber or doctor. Over time, the insights view helps you spot correlations you might otherwise miss.

GLP Trackr is a tracking and journaling tool — it is not a substitute for professional advice, and any concerns about how your medicine is affecting you should always be discussed with your prescriber or doctor. They know your full history and are best placed to help.

Ready to start building your own picture? GLP Trackr is free to try for seven days — available now on the App Store and Google Play.