What to expect your first month on tirzepatide

Most people take their first dose on the same weekday they'll keep for the rest of therapy. Within 24 to 72 hours, the most common report is that meals end sooner than expected and food stops being interesting between meals.

Mild nausea, burping, and early fullness are typical. Fatigue in the first days is usually under-eating and dehydration rather than the medication itself.

By the second dose, most people can predict their own pattern: a quieter two to three days after injection, then a gradual return of appetite before the next dose. That rhythm is normal and is one of the things your clinician uses to judge dosing.

The scale may not have moved much yet. Water shifts easily mask early fat loss, and appetite reduction takes time to translate into a consistent calorie deficit.

The most common reason people feel awful in week three isn't the medication — it's reduced food volume, low fibre, and low fluid intake combining into slow digestion.

Fibre, magnesium where appropriate, daily movement, and hydration resolve most of it. Persistent or painful symptoms are worth reporting rather than tolerating.

Around week four, your clinician looks at three things: tolerance, appetite control between doses, and early trend on the scale. If appetite control fades well before the next dose and side effects are mild, a step up may be appropriate. If you're still adapting, staying put is a legitimate and common choice.

Vomiting that prevents you keeping fluids down, severe or persistent abdominal pain (especially pain radiating to the back), signs of dehydration, or any new symptom that concerns you all warrant a message rather than waiting for your next check-in.