Dosing and single vial stability

Got it, so there's no trick to pause the clock at 45 days for the extra vials. Once mixed, nothing really extends the time?

Some other peptides hold up better than reta. Tirzepatide can remain effective past 60 days after mixing, while certain ones lose strength sooner.

Peptides like tirz can be frozen after mixing with only minor potency loss. Reta seems to lose a bit more when frozen, but it's still better than throwing it out.

Thanks both. Luckily the unmixed powder is already in the freezer with desiccant to control moisture, so it should stay fine for a while. Glad I found this out before wasting any. Now I'll just order a better-sized kit.

Reasons I shouldn't read this board after edibles: first, now I'm worried BAC water goes bad in 28 days even though I just keep using mine until it's gone. Second, people are talking about freezing after mixing.

Haha, just to clarify, the powder that's still dry is in the freezer, not the liquid version. Enjoy the ride.

I have four mixed vials from a compounding pharmacy that are past their labeled date, and I can't use them all right now. Is fridge or freezer better from here until I need them?

I'm not freezing anything that's been mixed.

I have a year's worth of compounded pharmacy product in storage. That stays in the refrigerator. Dry kits go in the freezer.

Yeah it's the pharmacy version, so you think just fridge then?

I'll use it within a year of the printed date and I'm comfortable with that for this pharmacy product. No reason to freeze the vials.

I've used one reta vial for 90 days and didn't notice any drop in effect. Others here agree. From what I understand reta and tirz don't begin breaking down until around 120 days. Still, I'd save the 50 mg vial for when your weekly amount increases and buy smaller vials for now.

Can you share the source for the 120-day claim? I'm seeing degradation mentioned around 45 days instead.

Even on the chart, average loss at 90 days is under 10 percent once you drop the big outlier. That means maybe 2-9 percent less potent but still effective. It doesn't suddenly turn useless or unsafe at 90 days; you might just need a small extra amount to match the original effect. Not a scientist, but that's how the numbers look to me.

Those degradation charts apply to grey-market powder mixed with BAC water. They don't cover pharmacy-compounded versions that include preservatives and were tested for a full year. Brand-name tirz has a two-year date. The drop in effect you're feeling is probably your body adapting, which is why doses are increased over time anyway.

Eight weeks isn't an issue for me at all. I could stretch it out to ten if it turns out to be necessary.