Can You Take Mounjaro Early or Later Than Usual?

Yes, you can take your next dose earlier than usual, provided 3 days have passed since your last injection.

For example:

• If you normally inject on Monday, you could take your next dose as early as Thursday.
• After that, you can continue injections on your chosen new day each week.

Taking a dose too soon (less than 3 days apart) may increase side effects such as nausea or stomach upset.

Yes. If you forget or need to delay your dose, you can take it up to 4 days late.

Example:

• Normal dose: Monday
• You have until Friday to use Mounjaro.
• Continue injections weekly from that new day.

What if more than 4 days have passed?

If more than 4 days have passed since your missed dose:

• Skip the missed dose
• Take your next injection on your usual scheduled day
• Do not take two doses close together to make up for a missed one

Taking doses too close together increases the risk of side effects.

What if I have missed more than 2 weeks? 

You may need to go back to the starting dose or titrate down to a lower dose. 

Your body may have lost its tolerance to the higher doses of Mounjaro, increasing the likelihood of side effects. Starting at a lower dose allows your body time to adapt again. 

You should speak to your doctor or pharmacist for advice if this is the case.  

Mounjaro has a long half-life of around 5 days, meaning the medicine stays in your body for several weeks. Because of this:

• Small timing changes usually don’t cause problems
• Effects fade gradually rather than suddenly
• Regular weekly dosing keeps levels stable and side effects lower

Large timing changes, however, can lead to more side effects or reduced effectiveness.

Further reading: How long does Mounjaro stay in your system?

People often change their injection day because of:

• Travel or holidays
• Shift work schedules
• Social plans or events
• Side effects interfering with workdays
• Surgery or medical appointments
• Forgetfulness

Moving your dose day safely is usually straightforward as long as spacing rules are followed.

• Set a weekly reminder on your phone
• Keep injections linked to a weekly routine
• Store pens properly in the fridge
• Carry your pen safely when travelling
• Record injection days in your calendar or app

You can take Mounjaro a little earlier or later than usual if needed:

• If you would like to take Mounjaro early, take it at least 3 days after your last dose
• If you have missed a dose of Mounjaro, take it within 4 days of your usual injection day, and continue as normal
• If you have missed more than 2 weeks, speak to your doctor or pharmacist about lowering your dose