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Question about weight loss on Reta / GLP-1

13 replies8 peopleJun 12, 2026☆ Follow
Summary

how does retatrutide cause weight loss and why titrate slowly instead of pushing higher doses sooner

Users report that retatrutide and similar GLP-1s reduce food noise and make it easier to stay in a deficit, but results still require consistent training, high protein intake, and daily steps. Slow titration is emphasized to limit nausea, vomiting, constipation, and other gut issues that can appear when levels rise too quickly. Stacking compounds or switching agents is discussed mainly for better appetite control or mitochondrial support, though opinions differ on whether that beats simply raising the primary dose. Long-term plans focus on reaching a stable weight then maintaining without ongoing medication.

What this discussion establishesWhere people disagree

whether stacking another agent is preferable to simply increasing the retatrutide dose for better results

Still open

whether weight can be kept off long-term after stopping the medication

Nothing here is advice.

13 replies · 8 people
BrightBramble77archiveopening postJun 12

Hey everyone, I could use some input. Quick background: I'm 178 cm, started at roughly 145 kg and now sit at 140 kg. This is week three on reta. I began with 1 mg twice a week and have moved the last two shots to 1.5 mg, with the most recent one two days ago. By my math the active amount right now is about 3 mg. I'm also using 5-Amino-1MQ and SS-31 alongside it. On the lower dose I still felt hunger at times; the increase seems to have quieted that. What puzzles me is how reta actually drives weight loss when tasty food still requires willpower to skip. I also don't see why titration has to be slow if the studies show most weight coming off in month two or three anyway. From what I read the glucagon receptors probably aren't doing much below around 4 mg. Compared with my starting weight I've now dropped abo

BrightThistle70archiveJun 12

It's a marathon, not a race. Pushing the dose too soon can make you quite ill. As for willpower, the desire for the old foods tends to fade on its own so it stops feeling like a constant battle. Stick with the planned increases and don't overthink it. I'm on week five of tirz, down 26 lb, and feel really good overall. Food noise is gone, inflammation has dropped, skin looks better, focus at work is sharper, and joint pain has eased. I also take B12, magnesium malate, whey and casein powders, and have shifted to soups, raw vegetables, fruit, nuts, fiber bars and salads. I no longer miss the fried stuff and none of it is even in the house anymore.

PatientTimber45archiveJun 12

First off it's not a miracle drug, though close. You still have to train and watch what you eat. Reta helps cut nighttime binges and makes you feel full sooner and longer, but you won't drop 50 lb in three months unless you're starting over 300 lb and make drastic cuts. Stay in a deficit, lift, and aim for 12 k steps. The GLP-1 effect mainly limits binge eating; the glucagon part comes later. Don't split doses because that can make you adapt faster, and a single dose tends to give stronger appetite control. Even with tempting food in front of you the urge usually drops. Keep the end goal in mind or you risk ending up looking gaunt without muscle.

SlowLedger31archiveJun 12

Going too fast can stall digestion completely or swing the other way. I dealt with constipation while some friends had the opposite problem. Then there are risks like pancreatitis and related issues that can follow. So take it easy.

BrightBramble77archiveJun 12
↳ replying to @BrightThistle70

Thanks for the input. The reason I added the SS-31 and 5-Amino-1MQ was to repair mitochondria and raise energy. I'm also active: three dogs mean two hours of walking daily plus training sessions, and I've started lifting. I looked into cagrilintide but don't see why stacking it would be better than just raising the reta dose. What dose are you on at week five? From what I understand the extra energy and protection against metabolic slowdown is what sets reta apart from tirzepatide.

BrightThistle70archiveJun 12
↳ replying to @BrightBramble77

I'm at the 0.5 mg dose of tirz right now. It goes up every four weeks and I just did shot six on Wednesday. I picked tirz because I wanted the strongest appetite control possible. Started at 386 lb, now 360 lb at 6'2" and 55 years old. Still a long way to my goal of 215 lb, so maximum hunger reduction seemed important.

PatientTimber45archiveJun 12
↳ replying to @BrightBramble77

What matters most is whether you can stick to your diet without binging. That's where these meds help. A steady diet beats any compound. You'll get the glucagon effect eventually, but fat loss is possible even before then. It's just an extra benefit.

RustAnchor27archiveJun 12

When deciding between GLP-1s and reta I went with tirz because my main goal was to quiet food noise, expecting the rest to follow. Reta is generally weaker on that front, so switching or stacking could be worth considering if noise is still an issue. Either way this is a long process, and forum claims of getting shredded in three months are unrealistic.

SlowLantern46archiveJun 12

The goal is steady food intake and better adherence. Reta tends to make you indifferent to extra snacks and sugary drinks. You don't want to feel sick though. I'm 6'5", started at 240 lb. Did 0.5 ml for a month and now on week ten at 1.8 ml. I weigh everything, do hard cardio three times a week, keep protein high, and lift four days. At my current dose I can eat with the family, skip a meal when I want, or eat more before cardio.

BrightBramble77archiveJun 13

Another question about how I'm feeling. Last meal was yesterday at 18:00: some meat and fish plus a pear and half an apple. I normally do 18-hour fasts so planned to eat around noon today. At 10:00 my stomach started growling and I had to burp. It felt odd, like hunger but not quite. That sensation made me think I was hungry. Shouldn't GLP-1s (or cagrilintide, though I'm not using it) also quiet stomach growling? Next shot is tomorrow morning. After I ate the feeling disappeared.

CopperSignal27archiveJun 13

The main reason for slower increases is to lower the chance of sudden severe nausea and vomiting. That's the most frequent serious issue when starting or raising doses, and a small percentage end up needing hospital fluids for dehydration. Faster ramps raise that risk. Nearly half of users get some nausea or vomiting at some point, so it's common. One person even had weeks of hiccups after a first reta dose. Standard schedules are meant to keep problems manageable, though not eliminate them. Plotting levels on a graph helps show how slowly the drug builds and clears; half-life is about six days so side effects can linger a week. Amounts accumulate over four wee

BrightBramble77archiveJun 13

Thanks for the reply. My plan isn't to stay on these meds forever; I want to lose the weight and then maintain without them, though that's the second step. First is getting the fat off. I built my own version of the plotter you mentioned so I can track current levels and the half-life. Side effects so far have been tolerable: light nausea after the first shot, a headache after the third 1 mg shot, and constipation that I can't clearly blame on the drug or on not eating enough. Magnesium in the morning fixes the latter. One other change is that I can't look at myself naked in the mirror anymore; I just want the fat gone. Instant-gratification culture makes the long haul harder, and as I writ

GreyAlder39archiveJun 14

Losing something like my keys sometimes leaves me hoping to recover them. A simple shift involves thinking instead about the mass that is now gone or the pounds that are no longer there, or similar phrasing that emphasizes the loss as permanent. Although the words appear similar on the surface, they affect the mind, convictions, and drive in very distinct ways. One of the great substances I use involves five milligrams each day of that particular molecule. This helps reduce tiredness and, above all, could wipe out the cellular memory in fat cells so they do not grow back to their old dimensions. Only after a couple of years will I truly see if the approach paid off.

CopperSignal27archiveJun 15

I've reached normal weight several times before but never stayed there long; most recently 65 kg in 2012-14 before climbing back to 145 kg in 2022. Seeing myself as someone with a food-addiction issue that is currently in remission feels more accurate than pretending it's solved. Trying to keep weight off without these drugs in 2023-24 was constant hard work against hunger. Viewing it as an ongoing condition helps keep motivation up. There are also clear medical reasons not to regain. My outlook tends to be realistic to the point of being bleak at times, but the drugs have genuinely changed the equation: hunger now roughly matches the calories needed for stability around 1600-1900 per day. That still takes effort, and I'm currently on tirz 15 mg, reta 5 mg, cagri 0.5 mg with zero he

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