GLP-1: Fridge or nah?

Freezer for the long-term stock, fridge for the working supply is the practical two-tier approach - the potency degradation in the fridge is slow enough that a few months at refrigeration temperature doesn't meaningfully affect the compound. The freezer extends that runway significantly for anything you're not planning to use soon.

Fully agree on this. Cold doesn't affect mine at all, they hold up for months without any trouble. Constant swings in temperature are supposedly what actually breaks these compounds down.

Accidentally left a compound vial sitting out on the counter overnight by mistake last night. Still injected this morning regardless and got it right back into the fridge afterward, ha.

Once a vial's cracked open, the diluent just goes straight into the fridge for me.
Mostly about limiting temperature swings and contamination risk over the following weeks, given how much pricier the peptide is compared to the water itself.

No, the mixed vials break down pretty fast once out of the fridge. Could you find a small dedicated fridge to store your peptides in somewhere?

The makers of the approved product recommend room temperature storage in the dark, stating a 36 month shelf life counted from manufacture. Approved-drug data covers two years of fridge storage, and extra data shows another 18+ months of viability when refrigerated. Manufacturers of research peptides often store in freezers, and HPLC tests on many other peptides show freezer temperatures don't affect the peptide and show less degradation compared with refrigerator or shelf storage. I couldn't find anything on Tesamorelin specifically. I don't think freezing would be an issue, but I wouldn't risk it unless storage beyond 3 years mattered. On the shelf it should be fine for at least that.