Retatrutide, Rapamyacin & Metformin - anyone combining? Any issues or synergies?

59 yo woman here…

8mg of rapa each week and on low dose Reta… no issues at all

.5 crp and low A1c (even without the drugs).
I have hashimotos that is no worse or better since starting.

When I turned approx 50, I could no longer handle gluten… after I started rapa, related or not, my sensitivity disappeared

All this is to say, based on my N=1, I would not worry in the least about being a 60yo woman and taking these things together. They might negatively affect you, but I don’t personally believe being a woman is related. Take anything I say with a grain of salt!

Btw, I used to take metformin for my high glucose spikes, but it didn’t control them very well. Since being here, I’ve switched to dapagliflozin and Acarbose which help me significantly more… because my A1c was already good, there has not been much of an effect there.

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I take Retatrutide and Rapamycin. I don’t take metformin because the longevity data is not good and I don’t have T2D but I do take Acarbose instead.

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Yes — I’m currently running that exact combo.

I’ve been on retatrutide 12 mg weekly for about a year, along with rapamycin once per week and metformin XR 500 mg daily.

Mechanistically it makes sense since they all hit different pathways:

• Retatrutide → GLP-1 / GIP / Glucagon metabolic signaling

• Rapamycin → mTOR inhibition (autophagy / longevity pathway)

• Metformin → AMPK activation and improved insulin sensitivity

In theory you’re covering three major metabolic/aging pathways at once. The main thing to watch is appetite suppression and making sure calories and protein stay high enough to avoid muscle loss.

Obviously still very experimental since there are no clinical trials on this stack, but from a pathway perspective the combination is interesting.

Curious if anyone else here has run the same stack and what their experience has been.

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I’m taking 1 mg Reta on Monday evenings and 6 mg Rapa Friday evenings. 65F. Tested giving up the Rapa and oof joints hurt, have osteoarthritis in my hands that I’m hoping will improve. No weight issues. Hoping the Reta helps lower my A1C from 5,6 (despite low carb for years and hypoglycaemia if I work out late afternoon) and slow progression of the OA.

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48 year old male here. 2mg Reta microdosed weekly, 6mg weekly of Rapa, and 500mg (twice daily) XR Metformin. Last A1C was 4.2. No issues on that stack at all. I hope that helps.

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Why not using Tirz instead of Reta, since glucagon will raise your RHR?

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Tirzepatide does too but a little less

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The phase 3 data on Reta does show a modest increase in resting heart rate early on, but it appears to level off or normalize over time.

That’s been pretty consistent with my experience as well — for example, my resting heart rate is around 64–68.

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Not for me, unfortunately. After being on it for a year and a half, my resting heart rate is still much higher than previously.

What I think is happening based on what I’ve read is that people who are lean and using it have a higher increase than people who are overweight and lose a lot of weight with it

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Have you tried other GLP-1s? I have similar issue with Tirzapetide, and my RHR is ~10 beats higher/min, after a year and a LOT of cardio. I would be 45-55 resting based in the past, and now 60-65. Also not taking high doses - 2.5mg / week of Tirz.

Some of this may be inverse relationship between lowering blood pressure, and heart rate. Heart works a bit harder to circulate blood is my simple understanding.

I know lower BP = good. What is the impact of a increased RHR longer term?

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I’m on semaglutide (oral tablets @ 14mg/day), rapamycin and imeglimin (and acarbose with carb meals), and all seems to be going well. I need to do blood testing soon to validate, next week. Imeglimin. A new and novel drug thats better than Metformin

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70 y/o male here. My longevity clinic in Scottsdale has me on 1x week Tirzepatide and 5x per week of Tesamorelin (for my visceral fat)and Glow as well as 6 mg weekly of Rapamycin on a three month on/off schedule, acarbose daily with food as well as Prolon at a minimum quarterly and monthly, if necessary.
I follow their protocol and they tell me my numbers are improving. I’m not nearly as educated as y’all on this site regarding the scientific aspects of my peptides, rapamycin, acarbose, etc. All I know is it working.

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Tirza low dose + metformin XR 500 + rapa 3mg weekly + acarbose + empagliflozine 6,25mg

All is well, no need to cancel anything. They are all very complementary. Just need to look for hydration. RHR went even down.

Now looking for switching to retatrutide. And to add cagrilintide if needed, if my appetite won’t be suppressed enough on reta.

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Where does anyone get retatrutide? I thought it was still in clinical trials.

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Off of the back of a truck :slight_smile:

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Grey market: https://www.finnrick.com

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You can get it from Chinese grey marker vendors. The best introduction of how to navigate this space is here https://stairwaytogray.com/. This will give you an idea of what you’re getting yourself into.

If you decide to proceed, be sure to join their group where they give access to some vendors. Link is at the bottom of the page.

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True. It’s a solid site. Got immediately hooked up with vendors after my previous vendor went down, and at solid prices on that’s site’s chat.

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Trying to find a source for imeglimin. Are you purchasing your imeglimin from a USA doctor or an India pharmacy?
Thank you.

It’s not available in the USA. Only available via the Indian pharmacies: Buy Rapamycin Online - List of Reliable Pharmacies