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Semaglutide Side Effects

The most commonly reported side effects of semaglutide include nausea, vomiting, and off label use, based on 78,681 FDA adverse event reports from 2004 to 2025.

Semaglutide side effects

Percentages show how often each reaction appears relative to total reports for semaglutide.

1
Nausea14.8%11,633
2
Vomiting9.7%7,601
3
Off Label Use8.7%6,856
4
Diarrhoea8.4%6,595
5
Decreased Appetite6.1%4,809
6
Constipation5.9%4,647
7
Weight Decreased5.4%4,251
8
Fatigue4.5%3,578
9
Headache4.4%3,430
10
Blood Glucose Increased3.9%3,069
11
Product Use In Unapproved Indication3.9%3,039
12
Abdominal Pain Upper3.8%2,954
13
Dizziness3.7%2,890
14
Wrong Technique In Product Usage Process3.6%2,837
15
Impaired Gastric Emptying3.6%2,803

These are voluntary reports and do not establish that semaglutide caused these reactions.

Report severity

51.7%Serious40,703 reports
20.5%Hospitalizations16,126 reports
1.7%Fatal1,365 reports

Seriousness is determined by the reporter, not by OpenClaim.

Semaglutide drug interactions

Other drugs that appear in adverse event reports alongside semaglutide. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Insulin3.4%2,669
2
Metformin2.5%1,958
3
Dupilumab2.2%1,695
4
Dulaglutide1.8%1,392
5
Tirzepatide1.5%1,199
6
Empagliflozin1.3%1,026
7
Dapagliflozin0.7%589
8
Treprostinil0.6%504
9
Adalimumab0.6%490
10
Liraglutide0.6%466
11
Sodium-oxybate0.5%415
12
Evolocumab0.5%400
13
Atorvastatin-calcium0.5%398
14
Prednisone0.4%327
15
Vedolizumab0.4%326

Taken alongside

1
Metformin11.7%9,195
2
Insulin7.1%5,558
3
Atorvastatin-calcium6.2%4,907
4
Ergocalciferol4.9%3,894
5
Aspirin4.7%3,690
6
Levothyroxine-sodium4.3%3,357
7
Rosuvastatin4.1%3,195
8
Omeprazole3.8%3,028
9
Acetaminophen3.6%2,862
10
Amlodipine3.6%2,814
11
Empagliflozin3.5%2,775
12
Albuterol3.5%2,726
13
Gabapentin3.4%2,701
14
Pantoprazole-sodium3.2%2,550
15
Metoprolol3.2%2,537

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports semaglutide side effects

60.2% of semaglutide adverse event reports involve female patients and 31.0% involve male patients. The largest age group is adult at 65%. These figures reflect who reports side effects, not underlying risk.

Sex

Female60.2%
Male31.0%
Unknown8.8%

Age group

< 2<0.1%
2–11<0.1%
12–170.3%
18–6464.7%
65+34.9%

What is semaglutide used for

Conditions and purposes for which patients were taking semaglutide when the adverse event was reported.

Aortic ArteriosclerosisArteriosclerosisAbdominal DiscomfortAbdominal Pain UpperAbnormal Weight GainAcquired Generalised LipodystrophyAcute Kidney InjuryAdjuvant TherapyAdverse Drug ReactionAdverse EventAffective DisorderAlcohol UseAlcoholismAngiopathyAnorexia Nervosa

Showing 15 of 419 indications

Semaglutide brand names and reporting trend

Semaglutide is sold under the brand name Rybelsus.

Brand names

Rybelsus7,019

Quarterly reports (20042025)

200420202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking semaglutide with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.