metaboliqWhy the stomach is affected
Semaglutide and tirzepatide slow how fast the stomach empties. That is part of how they increase fullness, and it is also why nausea, burping, bloating and constipation are the most common complaints.
Starting at a low strength and stepping up slowly is the main way the labels limit them. Smaller meals, stopping at the first sign of fullness, and enough water help too.
The serious ones
The labels list pancreatitis, gallbladder problems including gallstones, kidney strain from dehydration, low blood sugar when combined with insulin or a sulfonylurea, and allergic reactions. For semaglutide, NAION, a sudden painless loss of vision in one eye, is listed as very rare.
Hair, skin and the face
Hair thinning and a thinner-looking face are reported by people whose body weight falls quickly. They follow the speed of the change and low protein intake more than any one product, which is one more reason protein matters.
Muscle loss, measured
In the STEP 1 body-composition substudy, roughly 40% of the total body weight lost was lean mass. Protein at every meal, strength training two or three times a week, and measuring body composition are how a plan protects it.
Sources: [4]
Who decides, and how it is started
It is prescription-only in India, and a doctor decides whether it fits you after reading your history, your blood tests and anything else you take.
It is started at a low strength and stepped up every four weeks or so, because stepping up slowly is what keeps the stomach side effects manageable.
Sold outside an authorised pharmacy, a pen can be fake, wrongly stored or the wrong strength; the regulator has asked states to keep these products to authorised channels and their approved uses.
Sources: [5]
What happens when it is stopped
These work while they are taken. One year after semaglutide was stopped in the STEP 1 extension, people had regained about two-thirds of what they had lost; in SURMOUNT-4, people switched from tirzepatide to placebo regained about 14% of body weight.
That is why the habits built alongside treatment, and a plan for maintenance, matter as much as the treatment itself.
Side effects
Common, and usually easing with time
- Nausea, most often in the first weeks and after each step up.
- Diarrhoea or constipation.
- Vomiting, indigestion, burping and bloating.
- Feeling full early, and less appetite.
- Tiredness, and headache.
Serious, and rare
- Pancreatitis: severe, lasting pain in the upper abdomen that may spread to the back, with or without vomiting.
- Gallbladder problems, including gallstones, which are more likely when body weight falls quickly.
- Dehydration from vomiting or diarrhoea, which can strain the kidneys.
- Low blood sugar, mainly when it is combined with insulin or a sulfonylurea.
- Allergic reactions, rare but serious.
- A history of medullary thyroid cancer or MEN 2 in you or your family is a reason it is not used.
- NAION, a sudden painless loss of vision in one eye, listed as a very rare side effect of semaglutide.
Stop and get medical help at once for severe abdominal pain, repeated vomiting, signs of an allergic reaction, or sudden changes in vision. Tell the doctor about pregnancy plans first: these are not used in pregnancy.