Can I have some advice on kit strength?

[HereKittyKitty]

Go to PeptideDosages.com and review the information about Tirzepatide. It will give you a lot of information, including peptide purchasing information. The link below is for T5.

Tirzepatide 5mg Dosage Protocol | PeptideDosages.com

Complete Tirzepatide dosage protocol for the 5 mg vial. Covers reconstitution, dosing schedule, and GLP-1/GIP dual agonist weight loss cycle guidelines.

peptidedosages.com

 

[UncrossSelector]

Had to remove the content due to filters

I hate "protocols" like that.

It's pushing people up to high doses totally blindly. People shouldnt just titrate up GLP's every 4 weeks "just because". And doing 4x injections rather than using less BAC?

AI Slop imho

 

[HereKittyKitty]

It's a guide, relax. People have to use their own critical judgement. It can provide enough information to get an idea of how to figure it out and a guideline is better than nothing. Just because it says to titrate up every 4 weeks doesn't mean people do.

 

[Scraps]

Getting the right size filters was a bit of a search but I have some sourced now.

Thanks for the link but I plan on starting Reta rather than Tirz. I'll have a look and see if they have Reta schedules on there too. I suppose the most useful information would be a cross section of demographics along with dosages and injection schedules along with success rates but it will need to out of trials before that kind of information would be available I imagine. Happy to try and and adapt as needed.

 

[HereKittyKitty]

Getting the right size filters was a bit of a search but I have some sourced now.

Thanks for the link but I plan on starting Reta rather than Tirz. I'll have a look and see if they have Reta schedules on there too. I suppose the most useful information would be a cross section of demographics along with dosages and injection schedules along with success rates but it will need to out of trials before that kind of information would be available I imagine. Happy to try and and adapt as needed.

They do have for Reta and a wide variety of peptides.

 

[BNLFL]

Getting the right size filters was a bit of a search but I have some sourced now.

Thanks for the link but I plan on starting Reta rather than Tirz. I'll have a look and see if they have Reta schedules on there too. I suppose the most useful information would be a cross section of demographics along with dosages and injection schedules along with success rates but it will need to out of trials before that kind of information would be available I imagine. Happy to try and and adapt as needed.

That's all kind of a personal deal based on you. Most go 4 weeks on a certain dose, then increase the dose if needed. Some stay on a certain because it's just working and they're comfortable. E. Lilly trials are 2mg, 4mg, 8mg and 12mg if needed. I'm 2,4, 6mg and we'll see if I go up. The reasons to possible increase, are not losing weight (stalling), or in my and wives case just not having that same feeling and lack of appetite suppression. I'm not sure if I'll move to 8mg yet. 4 weeks of 6mg is still working

 

[wellhellothere]

5mg kit is likely too small for you - more power to you if you decide to go that route, but the recon'd vial only lasts max 1 month in the fridge. I'd rather go 10mg kit and throw the extra out (It's only a few bucks when you do the per vial math).. That allows you room to increase your dosage easily!

 

[BNLFL]

Getting the right size filters was a bit of a search but I have some sourced now.

Thanks for the link but I plan on starting Reta rather than Tirz. I'll have a look and see if they have Reta schedules on there too. I suppose the most useful information would be a cross section of demographics along with dosages and injection schedules along with success rates but it will need to out of trials before that kind of information would be available I imagine. Happy to try and and adapt as needed.

Here's the Reta one @HereKittyKitty talked about.

Retatrutide 20mg Dosage Protocol | PeptideDosages.com

Complete Retatrutide dosage protocol for the 20 mg vial. Covers reconstitution, dosing schedule, and triple GLP-1/GIP/glucagon agonist weight loss cycle info.

peptidedosages.com

 

[BNLFL]

5mg kit is likely too small for you - more power to you if you decide to go that route, but the recon'd vial only lasts max 1 month in the fridge. I'd rather go 10mg kit and throw the extra out (It's only a few bucks when you do the per vial math).. That allows you room to increase your dosage easily!

I and numerous others go 6-8 weeks no issues. That's kind of how I plan when I recon a chosen vial size.

 

[lessthanhalf]

From another site:

Reconstituted frozen Reta degrades 14% +/- after 45 days. Reconstituted and refrigerated Reta degrades between 3% - 5% over the same 45 days. Reconstituted and refrigerated Reta degrades between 3% and 9% over 90 days. Bottom line, don't freeze reconstituted Reta. Just throw it in the fridge.

The peptide bonds are not strong enough to be frozen without shearing would be my guess.

Hi, can you please provide a link to where this came from? Or who did the testing etc. I do not mind being wrong, but I would like to confirm it to avoid saying technically incorrect things in future. I am basing my assumptions on reta being similar to other peptides in terms of degradation when frozen, but different peptides can behave quite differently, some are much more stable than others.
If this is correct then fridge is better than even one freeze thaw cycle, as 14% is enough to make a bit of difference to doses.

 

[Chili777]

Hi, can you please provide a link to where this came from? Or who did the testing etc. I do not mind being wrong, but I would like to confirm it to avoid saying technically incorrect things in future. I am basing my assumptions on reta being similar to other peptides in terms of degradation when frozen, but different peptides can behave quite differently, some are much more stable than others.
If this is correct then fridge is better than even one freeze thaw cycle, as 14% is enough to make a bit of difference to doses.

The original post was posted in a private forum. The OP was referring to a published report that wasn't mentioned, but was most likely this one, which I asked Gemini to find:

The most direct source for this specific "14%" figure is Manla Kar (Cellular Regeneration), a company that specializes in peptide stabilization. Their data, which is often cited in peptide research forums and marketing for high-end formulations, explicitly states: "Refrigeration at 4°C (39 F) extends stability by 10 months, but freezing (-20°C} causes 14% peptide aggregation—rendering them useless."
— Source: Manla Kar & Cellular Regeneration Stability Guidelines (2025/2026)

I asked Gemini for the reasoning behind the reduction in potency, and it gave me the following:

Retatrutide is particularly sensitive to freezing because it contains a C18 fatty acid side chain (acylation) which helps it bind to albumin in the blood for its long half-life.

Micelle Formation: In solution, these acylated peptides tend to form "micelles" (tiny spheres).

Freezing Impact: Freezing disrupts these delicate structures more aggressively than it does simple, non-acylated peptides. When the water freezes, it forces the peptide molecules into the remaining liquid pockets, increasing the concentration and leading to irreversible "salting out" or aggregation.

Summary: If your Retatrutide is already in liquid form, keep it in the refrigerator (2°C - 8°C). If you have already frozen it, you haven't "ruined" it entirely, but you should expect roughly a 14% decrease in potency compared to a fresh vial.

The 10 months at 39 F was a surprise. I wouldn't test that myself, but it was probably referring to a reconstituted, sterile cartridge.

 

[Neurogroot]

Hi everyone, hope you are all having a good weekend! I was hoping to gather some advice on planning for my first kit buy.

This will be my first research project, so with no prior experience have decided 1mg per week of Retatrutide will be the starting dose.

If I go for a 5mg kit that seems like an easy option other than the fact the reconstituted peptide will be sitting for more that the 4 weeks its advised. I've read on here that shouldn't be an issue but wonder if that's everyone's opinions?

If I discover a higher dose is required before getting to the end of 10 vials, I'm a little concerned the volume of the injection might start to get quite high. However, if I was to say start at a 10mg kit the reconstituted peptide will end up sitting for months. I'm assuming this is bad!

I am planning on filtering when reconing, but how do people going for these really high strength kits go about using them before they have started to turn?

This is the last piece of the puzzle for me before I can progress, after I've cracked this I can start to gather all the consumables.

Thanks for any help and advice.

For your initial question, I feel like GLPs are definitely the easier to fully dissolve peptides out there. I used to do 10 mg/ml, but when I saw the light and learned from some kind community members right here in this forum, I now go with 20 mg/ml. Works for tirz, and I am mostly certain it works for Reta. Trying this in 2 weeks when I recon my next vials/filter. (I have T30s and R20s, I recon 2x T30s, filtered in a sterile vial to make a T60 (plus whatever overfill), I only do 1 R20 now, but moving to 2x to make R40 in 2 weeks). So yeah, concentrate them how you like! 10 mg/ml is easiest for dosage mental math, but honestly, 5 or 20 isn’t too heavy of a mental lift.

Getting the right size filters was a bit of a search but I have some sourced now.

Thanks for the link but I plan on starting Reta rather than Tirz. I'll have a look and see if they have Reta schedules on there too. I suppose the most useful information would be a cross section of demographics along with dosages and injection schedules along with success rates but it will need to out of trials before that kind of information would be available I imagine. Happy to try and and adapt as needed.

Not sure if you were looking for demographic info here, but my wife and I are both early 40s. Both take tirz (She takes 6, I take 9), on Fridays.

I take 4 mg Reta on Mondays in addition to Friday tirz. I understand that Reta is a bit better for body recomp if you’re working out, but maybe less great at handling food noises. I’ve started working out more with better weather out there, and to “tide me over” with Tirz half life being 5 days. Plan on bumping up to 6 tomorrow, or maybe trying to hold out for one more week. Wife may also join me, starting with 2 mg/week on Monday.

Of course, dosages and reasoning is anecdotal and based on compiled reading over the months, so certainly don’t take my word as “the way”. It has been working for me, 6 months in, 48 lbs gone, and according to my smart scale which isn’t super accurate, decreased body fat from 38.8% to 30.1%, visceral fat 20 to 14, lean muscle from 156.5 lbs to 147 lbs. (just hit a milestone so really excited to post these numbers, they may not matter to most. Just me)

 

[lessthanhalf]

Thank you.

 

[Scraps]

For your initial question, I feel like GLPs are definitely the easier to fully dissolve peptides out there. I used to do 10 mg/ml, but when I saw the light and learned from some kind community members right here in this forum, I now go with 20 mg/ml. Works for tirz, and I am mostly certain it works for Reta. Trying this in 2 weeks when I recon my next vials/filter. (I have T30s and R20s, I recon 2x T30s, filtered in a sterile vial to make a T60 (plus whatever overfill), I only do 1 R20 now, but moving to 2x to make R40 in 2 weeks). So yeah, concentrate them how you like! 10 mg/ml is easiest for dosage mental math, but honestly, 5 or 20 isn’t too heavy of a mental lift.



Not sure if you were looking for demographic info here, but my wife and I are both early 40s. Both take tirz (She takes 6, I take 9), on Fridays.

I take 4 mg Reta on Mondays in addition to Friday tirz. I understand that Reta is a bit better for body recomp if you’re working out, but maybe less great at handling food noises. I’ve started working out more with better weather out there, and to “tide me over” with Tirz half life being 5 days. Plan on bumping up to 6 tomorrow, or maybe trying to hold out for one more week. Wife may also join me, starting with 2 mg/week on Monday.

Of course, dosages and reasoning is anecdotal and based on compiled reading over the months, so certainly don’t take my word as “the way”. It has been working for me, 6 months in, 48 lbs gone, and according to my smart scale which isn’t super accurate, decreased body fat from 38.8% to 30.1%, visceral fat 20 to 14, lean muscle from 156.5 lbs to 147 lbs. (just hit a milestone so really excited to post these numbers, they may not matter to most. Just me)

Hey, well done on the milestone! And thanks for the explanation on your protocol, that's really helpful.