How do the smartpants design the drug so that it's stable only for 4 weeks?

[CNCCurrency]

So you're getting liquid from China? Probably pens

Nope, lyophilized.

 

[desinr-gal]

Perhaps this questions pertains to not just reta, but also other peptides.

A general recommendation seems to be that any reconstituted peptide must be used within 4 weeks...why? And specifically GLP1 drugs, how are these peptides designed so that they are stable for 4 weeks in a fridge?

I use a vial for almost 4 months.. I recon with Hospira bac, I filter, and I keep them in the fridge.

 

[skaylife]

Commercial peptides like mounjaro etc are very carefully formulated with multiple extra chemicals to stabilise the peptide and then tested extensively so they can guarantee a reasonable shelf life after reconstitution, and are made sterile with very low odds of contamination. Doing it at home with bac water is very crude in comparison so does not have the couple of years shelf life.

I also don't compare mine with mounjaro. But if all the graphics and published charecteristics about peptides here are true, it must be valid for mounjaro too at a level, not? In each case I can compare mine with those who pulls their constitution daily out of a vial with a syringe and inject. At the moment I am at maintenance dose of 2mg tirz and reconstitute 20mg with 2ml Bac. I can dare to use it 10 weeks long without any doubts. It won't be thrown away after 4 weeks.