opinions on combined therapy, glp + metformin?

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Cluni0n

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Hi everyone, I’m currently talking with my doctor to decide which medication would be best for me. I’m significantly overweight (224lbs, 5'4F) and have hiigh HOMA score (7.9), but my fasting glucose, A1C, cholesterol, no fatty liver and other test results are all within normal ranges (perks of having tons of muscle mass tho). I’ve been reading a bit about combined therapy, and it seems to yield good results: you don’t lose as much muscle mass, taking less metformin means fewer side effects, low ozempic doses, and it targets different mechanisms in terms of hormones. I actually found it very interesting, so I’d like to know if anyone has tried this method before, if you could share your experience it would be great, thanks!
 
Cluni0n said:


Hi everyone, I’m currently talking with my doctor to decide which medication would be best for me. I’m significantly overweight (224lbs, 5'4F) and have hiigh HOMA score (7.9), but my fasting glucose, A1C, cholesterol, no fatty liver and other test results are all within normal ranges (perks of having tons of muscle mass tho). I’ve been reading a bit about combined therapy, and it seems to yield good results: you don’t lose as much muscle mass, taking less metformin means fewer side effects, low ozempic doses, and it targets different mechanisms in terms of hormones. I actually found it very interesting, so I’d like to know if anyone has tried this method before, if you could share your experience it would be great, thanks!

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Just as an FYI in case anyone reading isn’t familiar.... HOMA IR is basically a calculation used to estimate insulin resistance based on fasting insulin and fasting glucose. So someone can technically still have normal glucose and A1C while already having fairly significant insulin resistance, especially if they have higher muscle mass or are otherwise compensating well metabolically.

So.....A HOMA of 7.9 is definitely significant insulin resistance, even if your glucose and A1C are still normal on paper. And this alone can absolutely make weight loss harder because chronically elevated insulin tends to promote fat storage and makes it harder for the body to efficiently access stored energy.

So yes, it makes good sense to me that your doctor is taking this seriously even though your other labs look good.

And I do think there’s logic behind combination therapy for some people because Metformin and GLP1s work through different mechanisms. Metformin is more about improving insulin sensitivity and reducing liver glucose output, while GLP1s help with appetite regulation, satiety, gastric emptying, insulin signaling, etc.

As far as being “aggressive,” I think that depends on what that means. In someone with significant insulin resistance and obesity, many providers are fairly aggressive because improving the metabolic dysfunction early can make weight loss and overall health outcomes much easier long term. It's harder to do one without the other in these high insulin resistant cases.

The main thing is balancing:

• effectiveness

• sustainability

• side effects (this is a big one)

• muscle preservation

• adherence long term

Because rapid weight loss without enough protein/resistance training can sometimes come with more muscle loss, and some people simply can’t tolerate aggressive medication escalation from a GI standpoint.

But overall, I think you’re asking really smart questions and looking at the metabolic side of this.... not just the scale..... which is honestly the right mindset 😊

Hopefully if you dive, the side effects are tolerable so you can help to lower that resistance!
 
I've been taking Metformin for years for longevity, so I never got near prediabetes. Several years ago, I started on some Semaglutide to lose some weight. I did it for a while, worked great. Then switched to Tirzepatide and it worked better. Now I’m at maintenance weight stacking 1.25 mg Tirzepatide with 1.25 mg Retatrutide. And keeping the Metformin throughout, of course. (And working out a couple of times a week at the gym.)

The analysis of two recent weeks from a CGM reported, “Your glucose control is tight, stable, and metabolically efficient, with low variability, rapid post‑prandial clearance, and no evidence of pathological lows. The patterns are consistent with excellent insulin sensitivity and high metabolic flexibility. Across multiple mornings, your fasting window sits consistently around 72–85 mg/dL, this is an elite fasting range: stable, low, and without drift. Your glucose variability is extremely low. Most people, even healthy ones, swing 40–60 mg/dL post‑meal. You often swing <20 mg/dL. Your nighttime values are impressively flat.”

FWIW, my CGM data reports better than mf GF who is also at goal weight, is on a larger dose s of Tirzepatide and Retatrutide, and is younger, but isn’t on Metformin. I realize N=2 isn’t statistically significant, but it’s the data I have.

Remember, Metformin is an AMPK activator, so over years it improves your mitochondria. I attribute those improvements to part of my body’s good glucose handling.
 
Researcher6076 said:


I've been taking Metformin for years for longevity, so I never got near prediabetes. Several years ago, I started on some Semaglutide to lose some weight. I did it for a while, worked great. Then switched to Tirzepatide and it worked better. Now I’m at maintenance weight stacking 1.25 mg Tirzepatide with 1.25 mg Retatrutide. And keeping the Metformin throughout, of course. (And working out a couple of times a week at the gym.)

The analysis of two recent weeks from a CGM reported, “Your glucose control is tight, stable, and metabolically efficient, with low variability, rapid post‑prandial clearance, and no evidence of pathological lows. The patterns are consistent with excellent insulin sensitivity and high metabolic flexibility. Across multiple mornings, your fasting window sits consistently around 72–85 mg/dL, this is an elite fasting range: stable, low, and without drift. Your glucose variability is extremely low. Most people, even healthy ones, swing 40–60 mg/dL post‑meal. You often swing <20 mg/dL. Your nighttime values are impressively flat.”

FWIW, my CGM data reports better than mf GF who is also at goal weight, is on a larger dose s of Tirzepatide and Retatrutide, and is younger, but isn’t on Metformin. I realize N=2 isn’t statistically significant, but it’s the data I have.

Remember, Metformin is an AMPK activator, so over years it improves your mitochondria. I attribute those improvements to part of my body’s good glucose handling.

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What dose of Metformin are you taking?
 
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