I changed from Sema to Tz on January 2 with about twenty pounds left. Five pounds came off in the first three weeks. I went up on February 20 and for the next seven weeks the scale has only moved the same three-quarters of a pound up and down. Hunger is gone and food noise is quiet. Protein and fiber targets are met, water is over seventy-two ounces, and I lift plus do cardio four or five days a week. I keep wondering if Tz simply does not work for me and whether I should return to Sema at a higher dose, raise Tz, or try stacking. I try not to compare my slow progress with the big drops others post. Some days are easier than others, but seeing the same fraction of a pound return this morning is frustrating. I have read and watched a lot and talked with the few people I know who source their own, yet I still wonder if something is off.
What am I doing wrong?
Why am I stalled on tirzepatide after switching from semaglutide despite tracking intake, hitting protein and fiber, exercising, and staying hydrated?
The original poster switched medications and saw initial loss followed by a multi-week stall at the same 0.75 lb fluctuation while eating 900-1000 kcal, training regularly, and reporting no hunger. Replies point to possible metabolic adaptation from prolonged low intake, water retention from sodium or stress, body recomposition from the medication change, or inaccurate calorie estimates. Several suggest a temporary increase in calories or a diet break, while others note the switch itself alters hormonal effects and may require more time or titration. The thread ends with the poster planning to consult a dietitian and consider lowering the dose.
What this discussion establishes- 900-1000 kcal daily with 4-5 days of mixed training can trigger energy conservation even without obvious fatigue symptoms
- Switching from semaglutide to tirzepatide changes GIP/GLP-1 balance and may shift how protein is used or how water is retained
- Sodium from food, powder, or electrolytes can mask fat loss on the scale for weeks
- Long-term deficits after major prior weight loss can leave resting expenditure very low
- Some report renewed loss after raising calories or adding refeed days rather than further restriction
Whether the stall is best addressed by eating more to reset metabolism or by accepting that 900 kcal plus activity already requires further adaptation that simply needs more time.
Still openWhether the current tirzepatide dose is too high, too low, or simply needs weeks longer to show effect, and what exact calorie or macro adjustment would restart loss.
Nothing here is advice.
If you had already stopped losing on sema, then tirz is at least keeping the weight from coming back even if it is not producing more loss right now. GLP medicines do more than just cut calories; a rodent study showed the treated group lost more than a calorie-matched control group. The fat-partitioning details may be off, but the basic result stands.
Bodies are unpredictable and small things add up. A gallon of water is roughly seven pounds, so drinking a lot and not flushing it all shows on the scale, and extra sodium makes it worse. Track calories and training for two weeks and check the scale. If nothing moves, drop another hundred calories and repeat. It is just testing one variable at a time.
Yes, everything that goes in is logged and the app shows the macros so I stay on target for protein and fiber. Right now that lands at nine hundred to one thousand calories. There is no room for anything else. I will read the article tonight. After losing access to sema I was off everything for a few months, then restarted sema in September once I had done research. I moved up faster to reach my previous dose. From September to January first the scale barely moved, then I switched to Tz on the second.
It is possible you are eating too little. My counselor had me raise intake from around nine hundred to twelve fifty or thirteen hundred at my height and age, and the scale started moving again once I added black beans, sweet potatoes, or a couple of corn tortillas. Appetite is gone so forcing more food down is still a struggle.
You are already tracking everything, drinking enough, and training, so the effort is clear. Nine hundred to one thousand calories while doing cardio and lifting is very low and can put the body into a conservation state that stops further loss. Sometimes the next step is to ease off the dose or the training so the body can respond again instead of pushing harder.
It sounds like the basics are all in place, so the stall is not from lack of effort. The last few pounds are often the slowest and most people only post the fast drops, not the weeks of bouncing the same amount. Your results are still real even if they are not dramatic. If the medication itself feels off, that is a conversation for the prescriber, but nothing here shows you have done anything wrong.
No one really knows how these medicines interact with whatever starvation-mode effect exists, but you would probably notice constant coldness or low energy if that were the whole story. Another possibility is that adding GIP activity while reducing GLP-1 activity is shifting some of your protein toward muscle instead of fat loss, so the scale stays flat even though body composition may be changing. The switch from sema to tirz is a bigger hormonal change than it first appears.
This matches what I am seeing after starting in February. Two pounds the first two weeks, one more the next, then the scale just moves up and down. I am new, drinking water, and watching intake, but I am at one thousand to twelve hundred calories and now feel hunger again even though I do not overeat. What dose are you on?
Besides what has already been said, lowering carbs and watching day-to-day salt changes can reduce water retention, though some salt is still needed.
What are your macros? The ratios might need adjusting.
Carbs are already controlled because I am a type-two diabetic in remission and want to stay there. I will check the salt intake.
That is the issue. Carbs have been under the calculator targets for seven years. Protein target is one hundred grams a day and it is difficult to reach because I cannot eat much volume. Everything chosen is high in protein or fiber and nothing under fifteen grams per serving. Protein powder is added because food alone is not enough. That remains the hardest part.
It could be water retention. The calorie tracking already shows a deficit, but stress, low intake, and changing medicines can all cause the body to hold fluid. Give it a few more weeks; a larger drop might appear suddenly.
Thanks for the article link and the thoughts. I do not accept simple calorie-in calorie-out as the full explanation. Years of keto felt similar to the last month, though milder. Everyone who replied has given useful angles, including reminders to be patient with myself. Tonight I am going back through a year of logged meals to look for patterns. My daily calories sit well below what the calculators suggest, and I do not see how to add more, but it needs another look. I will try the ideas offered and keep going.
Have you been using electrolytes? Some brands contain quite a bit of sodium.
I have not. That could be an easy way to pick up extra sodium without noticing.
Without starting weight, age, height, prior sema dose and loss, current tirz dose, and current weight it is hard to judge. Maintaining weight at nine hundred calories with exercise would require extreme metabolic adaptation and would only make sense for someone short, female, and already much lighter than before. The drop in expenditure after large weight loss is real, but nine hundred is still very low. It is possible the logged numbers are not accurate; people often underestimate intake. Weighing and recalculating everything might reveal the difference.
There is discussion on forums about whether protein calories are handled differently than other macros. People also fixate on calorie tracking, yet the numbers on labels come from bomb calorimetry, which does not match the actual energy the body extracts.
I've been wondering how much time I've spent cutting calories since extended phases like that tend to slow down how fast the body burns energy I've thought about trying occasional higher intake days or short pauses from the diet.
It has been a long time. I rarely take breaks from the way I eat, maybe a few times a year. The idea of doing it more often feels stressful. I may need to check in with my dietitian again. I was diagnosed with type two in twenty nineteen, had surgery five years ago that reversed it, and lost more than half my weight. I regained twenty-five pounds from my lowest point and want to get a bit below that. My diet is very structured.
Many of the larger packet brands now have five hundred milligrams and some specialty versions reach one thousand milligrams of sodium.
I stayed very strict for years, lost one hundred pounds, and ended up with a slowed metabolism as a result.
I guess I really do need to see my dietitian.
I looked into the sodium content of my protein supplement.
Type two diabetes, prior weight-loss surgery, and being at roughly half previous body weight explain why weight can stay stable at such low intake. Long-term metabolic adaptation after large loss can persist for years or longer, though that does not immediately solve the current situation.
Thanks for the video. I have been doing something similar without realizing it. Maintenance is around twenty-seven hundred, so I eat about eighteen hundred Monday through Friday and do not track the weekend, which usually lands between twenty-five hundred and three thousand. That planned break helps me stay consistent during the week without feeling like I am stuck at the same number every day. I also do not feel constantly cold or mentally foggy.
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