The most common long-term side effects of semaglutide are gastrointestinal issues, including nausea, vomiting, abdominal pain, diarrhea, and indigestion. These are usually mild or moderate and tend to decrease over time as the body adjusts to the medication[1][2][3][6]. However, in some people, these side effects may persist and can require discontinuation of the drug[6].
Other potential long-term side effects include:
- Fatigue: Some users report sustained fatigue, with rates varying from trial to trial[2].
- Pancreatitis: There is a rare but serious risk of inflammation of the pancreas, presenting as severe abdominal pain that may radiate to the back, nausea, or swelling[1][3][4][5].
- Gallbladder disorders: Semaglutide may increase the risk of gallstones and gallbladder inflammation, which can cause abdominal pain and digestive distress[1][3][4][6][7].
- Kidney injury: Acute kidney injury can occur, particularly in patients who experience ongoing or severe gastrointestinal symptoms (which can lead to dehydration). People with pre-existing kidney conditions are at higher risk[1][3][4][5].
- Increased heart rate and palpitations: Occasionally, semaglutide has been linked to increased resting heart rate[3][4].
- Diabetic retinopathy complications: In people with pre-existing diabetic eye disease, rapid blood sugar improvements can temporarily worsen vision issues[3][4].
- Thyroid C-cell tumors: Animal studies and a boxed warning note a potential risk of this rare thyroid cancer, though the relevance in humans is still under study and unclear[1][3][4][7]. Medical experts recommend careful monitoring if you have a higher risk for thyroid disease[1].
- Intestinal complications: Semaglutide has been associated with rare cases of stomach paralysis (gastroparesis) and bowel obstruction[7].
- Hypoglycemia (low blood sugar): Especially when used with other diabetes medications, semaglutide can cause blood sugar levels to drop too low[1].
Most gastrointestinal effects are transient and resolve as therapy continues, but serious side effects require medical evaluation and possible discontinuation of the medication. Long-term safety data is still accumulating, but ongoing monitoring by healthcare providers is essential, especially for individuals with underlying kidney, gallbladder, or thyroid conditions[1][3][4][5][7].
References
- [1] What Are the Long-Term Side Effects of Semaglutide? – Healthline
- [2] Considering taking a weight-loss drug like Ozempic? Here are some …
- [3] Side effects of Semaglutide use – Pharmko
- [4] Long-Term Side Effects of Ozempic – Bursor & Fisher, P.A.
- [5] Semaglutide: Double-edged Sword with Risks and Benefits – PMC
- [6] Two-year effects of semaglutide in adults with overweight or obesity
- [7] The Long-Term Side Effects of Wegovy (Semaglutide) – GoodRx