There are currently two versions of the Mounjaro® pen in circulation.
The original version, which is being phased out, may contain some residual liquid after you have administered your fourth dose. This remaining liquid should not be used as an additional or “extra” dose.
The newer version of the Mounjaro® pen has the plunger positioned further forward, meaning this residual liquid has been removed and you should not see the same amount of liquid remaining after your final dose.
Your Mounjaro® pen is intended to provide four weekly doses. Do not attempt to extract or administer any medication remaining in the pen after these four doses.
It is a good idea to keep a careful record of each dose you have taken. This will help you keep track of your treatment and know when you need to order your next pen.