What are the side effects of Ozempic (semaglutide)?

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Last updated: March 13, 2025View editorial policy

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From the Guidelines

Ozempic (semaglutide) is associated with a range of side effects, including gastrointestinal symptoms such as nausea, vomiting, diarrhea, and constipation, as well as more serious but less common side effects like pancreatitis, gallbladder problems, and hypoglycemia, as reported in the most recent study from 2023 1.

Common Side Effects

The most common side effects of Ozempic include:

  • Nausea
  • Vomiting
  • Diarrhea
  • Constipation
  • Headache
  • Fatigue
  • Dyspepsia
  • Dizziness
  • Abdominal distension
  • Eructation
  • Gastroenteritis
  • Gastroesophageal reflux disease These symptoms can be managed by starting with a low dose and gradually increasing to the therapeutic dose, as well as taking the medication with small, low-fat meals and staying well-hydrated.

Serious Side Effects

More serious but less common side effects of Ozempic include:

  • Pancreatitis
  • Gallbladder problems
  • Kidney injury
  • Hypoglycemia (especially when combined with insulin or sulfonylureas)
  • Suicidal ideation and behavior
  • Injection site reactions Patients should contact their healthcare provider if they experience severe abdominal pain, persistent vomiting, yellowing of skin/eyes, or signs of allergic reaction.

Peri-Operative Considerations

Recent studies have also highlighted the potential risks of Ozempic in the peri-operative period, including an increased risk of pulmonary aspiration under anesthesia 1. This risk may be mitigated by discontinuing the medication before surgery and using caution when administering anesthesia to patients taking Ozempic.

Management and Monitoring

To minimize the risk of side effects and ensure safe use, patients taking Ozempic should be closely monitored for signs of adverse effects, and the medication should be used with caution in patients with a history of pancreatitis, gallbladder disease, or kidney disease. Patients should also be counseled on the importance of proper dosing and administration, as well as the potential risks and benefits of the medication.

From the FDA Drug Label

OZEMPIC may cause serious side effects, including: • inflammation of your pancreas(pancreatitis). • changes in vision. • low blood sugar (hypoglycemia). • kidney problems (kidney failure) • serious allergic reactions The most common side effects of OZEMPIC may include nausea, vomiting, diarrhea, stomach (abdominal) pain and constipation.

The side effects of Ozempic (semaglutide) include:

  • Serious side effects:
    • Pancreatitis
    • Changes in vision
    • Low blood sugar (hypoglycemia)
    • Kidney problems (kidney failure)
    • Serious allergic reactions
  • Common side effects:
    • Nausea
    • Vomiting
    • Diarrhea
    • Abdominal pain
    • Constipation 2 2

From the Research

Side Effects of Ozempic (Semaglutide)

The side effects of Ozempic (semaglutide) include:

  • Gastrointestinal disorders, such as nausea, vomiting, diarrhea, constipation, and abdominal cramps 3, 4, 5, 6
  • Gastroparesis, a condition where the stomach takes too long to empty its contents 3
  • Appendicitis, a potentially life-threatening condition that requires immediate medical attention 7
  • Bloating, abdominal pain, and discomfort in the abdomen, which may be aggravated by semaglutide use 3
  • Hypoglycemia, or low blood sugar, which can be severe or blood glucose-confirmed 4
  • Skin and subcutaneous tissue disorders, such as rash, pruritus, and urticaria 4
  • Nasopharyngitis, or inflammation of the nasal passages 4

Common Adverse Events

The most commonly reported adverse events associated with semaglutide use are:

  • Gastrointestinal disorders (34-41% of patients) 4, 5
  • Nausea (21-22% of patients) 4
  • Diarrhea (10-15% of patients) 6
  • Vomiting (5-10% of patients) 6
  • Abdominal cramps (5-10% of patients) 6

Serious Adverse Events

Serious adverse events associated with semaglutide use include:

  • Appendicitis, which may require an appendectomy 7
  • Severe hypoglycemia, which can be life-threatening 4
  • Cardiovascular deaths, which have been reported in patients taking semaglutide 4, 5
  • Pancreatic carcinoma, which has been reported in patients taking semaglutide 4

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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