Injecting two different brands (suppliers) of Retatrutide

MTSpace

MTSpace

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Has anyone ever mixed the same peptide from two different suppliers in a single injection?

I was drawing my usual retatrutide from Supplier A, but I ran out when I had only about half of my intended dose in the syringe. Rather than wasting it, I finished the dose by drawing the remaining amount from Supplier B’s retatrutide into the same syringe & injected it.

I’ve used products from both suppliers before without any issues, but this is the first time I’ve combined two different sources of the same peptide in one injection.

It’s now been about three hours, & everything seems fine, but it got me wondering:

  • Has anyone else done this?
  • Is there any theoretical risk from mixing the same peptide from different suppliers in the same syringe?
  • Would you have discarded the partial dose, or done the same thing?

I’m interested in hearing both real-world experiences & any reasoning behind it.
 
Yes, I have been doing that for the last six weeks or so, including today 🤷 originally I did the two together but in separate syringes, but the last couple I just did them both in one syringe.

No issues to report, nothing of particular interest either, beyond continued weight loss as expected.
 
I don't see a risk in "combining" two suppliers reta for your dose, however I wouldn't have used the same syringe. You should have used a second syringe to draw from the new vial. You risked contamination of the new vial by using the same syringe.
 
Syringes are cheap. Even when moving from one finished vial to another from the same kit, I switch to a new syringe to draw and inject the balance.

Among other considerations, the needle dulls with each puncture of a vial membrane, making it slightly more clunky/painful/blood-drawing in your skin.
 
MTSpace said:


Has anyone ever mixed the same peptide from two different suppliers in a single injection?

I was drawing my usual retatrutide from Supplier A, but I ran out when I had only about half of my intended dose in the syringe. Rather than wasting it, I finished the dose by drawing the remaining amount from Supplier B’s retatrutide into the same syringe & injected it.

I’ve used products from both suppliers before without any issues, but this is the first time I’ve combined two different sources of the same peptide in one injection.

It’s now been about three hours, & everything seems fine, but it got me wondering:

  • Has anyone else done this?
  • Is there any theoretical risk from mixing the same peptide from different suppliers in the same syringe?
  • Would you have discarded the partial dose, or done the same thing?

I’m interested in hearing both real-world experiences & any reasoning behind it.

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You should be fine

Many people mix peps in same needle so the double up would not be an issue as long as you cleaned each vial.

I doubt there would be any issue with the mixing as long as both were the same mass/purity (or close)

Any issue with impurities would be an issue anyway on your next dose, so a moot point to mixing.

I have pinned 2x 1/2 doses before

If you are thinking about this because you have two smaller pens (e.g., two 0.5 mg pens instead of one 1 mg pen) and want to use them at once to reach your prescribed dose, this is generally safe provided they are taken at different injection sites (e.g., on opposite sides of the abdomen or different thighs, placed at least 2 inches apart). However, using two autoinjectors simultaneously wastes pens and significantly increases your exposure to the needle, raising the risk of accidental sticks or improper administration
 
Don't see any problems here, they are probably from the same manufacturer.

The Only différence could be in the Total dosage cause the vials may have à différent amont of Reta but not à lot.
 
angeliquereta said:


the vials may have à différent amont of Reta but not à lot.

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Please read and learn A LOT before you post misguided advice.

Kits from different batches can vary wildly. It's important to know the third-party tested mass of the particular batch, even from the same vendor.
 
indolent said:


Please read and learn A LOT before you post misguided advice.

Kits from different batches can vary wildly. It's important to know the third-party tested mass of the particular batch, even from the same vendor.

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Oh this was not an advice in any kind. The poster has already injected Product. So it's too late. By saying not a lot , i Just wanted to introduce the fact that Mass vary between each vials. But not at the point to risk a double dose. Sorry if that sounded as an advice cause It really was not. And i 'm pretty sûre that i learned these Mass variations by Reading you on différent threads
 
angeliquereta said:


Oh this was not an advice in any kind. The poster has already injected Product. So it's too late. By saying not a lot , i Just wanted to introduce the fact that Mass vary between each vials. But not at the point to risk a double dose. Sorry if that sounded as an advice cause It really was not. And i 'm pretty sûre that i learned these Mass variations by Reading you on différent threads

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It was the "not a lot" part
 
indolent said:


It was the "not a lot" part

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Yes i get It, i would not have said that to someone Who was questionning without having already injected peps. I have to Remember being careful of how i Say things.
 
quicksilver80 said:


Rs had to pin 3 from one. Then 5 from a newly reconstituted vial. Happens. Rs takes it at night to avoid the initial shitty feeling while sleeping.

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I think the point about not using the same syringe is a good one. Looking back, I was probably a little too casual with my “oh well, just inject it” approach.

In hindsight, I probably should have just taken a half dose, finished the first vial, & used the second supplier on my next injection rather than introducing another variable.

The overall risk was probably low, certainly no greater than many of the risks we all accept every day, but it made me realize that I wasn’t thinking through all of the variables as carefully as I should have.

It was a good reminder that even when something seems minor, it’s worth slowing down & thinking through the process before acting.
 
MTSpace said:


I think the point about not using the same syringe is a good one. Looking back, I was probably a little too casual with my “oh well, just inject it” approach.

In hindsight, I probably should have just taken a half dose, finished the first vial, & used the second supplier on my next injection rather than introducing another variable.

The overall risk was probably low, certainly no greater than many of the risks we all accept every day, but it made me realize that I wasn’t thinking through all of the variables as carefully as I should have.

It was a good reminder that even when something seems minor, it’s worth slowing down & thinking through the process before acting.

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Im so germaphobic the first time i reconstituted a r20 i used a new needle for each 1ml of bac water. Shit made me nervous a hell the first time. I know that's not necessary now but. I still dont reinsert needles into a vial more than once if im using it to inject because they get blunted pretty fast
 
I buy the 3ml syringes to reconstitute. They too are cheap. Heck I get them for free sometimes from my pharmacy when I pick up my TRT prescription.
 
I am actually doing that right now. The last vial I had left from my first batch was too strong, so I mixed a new vial from another supplier into it. Now it's perfect.
 
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