Pfizer genotropin

Hi hope everyones well
Just wanted to Check, how long can one store these pens once mixed, wanted to do 1 iu a day but all the info says only useable for 28 days after mixing? Thanks

Yes, 28 days.

Do you have the 36iu Pen? Take 1.3iu per day then.

Not sure how useful a dosage that low will be, but that's a different discussion.

Just make sure you are calculating the dosage in the correct unit, think these pens work in mg and not iu.