Semaglutide Side Effects: What to Expect & How to Manage Them

Understanding potential side effects is an important part of your treatment. Here's an honest, doctor-reviewed guide to what you might experience.

Majesta Health Medical TeamMedically Reviewed
Reviewed Apr 2, 20265 min read

Starting any new medication comes with questions about side effects. With semaglutide, most side effects are mild and temporary, but it's important to know what to expect.

Common Side Effects

The most frequently reported side effects include:

  • Nausea. The most common side effect, especially when starting or increasing dose. Usually mild and improves within a few weeks.
  • Decreased appetite. This is actually part of how the medication works. Most patients view this as a benefit.
  • Constipation or diarrhea. Digestive changes are common initially as your body adjusts.
  • Headache. Occasional headaches may occur, especially in the first week.
  • Tips for Managing Side Effects

    1. Start low, go slow. Your doctor will start you on a lower dose and gradually increase it 2. Eat smaller meals. Your appetite will be reduced, so smaller portions feel more comfortable 3. Stay hydrated. Drink plenty of water throughout the day 4. Avoid fatty or heavy foods. Light, balanced meals are easier to tolerate 5. Communicate with your care team. If side effects are bothersome, we can adjust your dose

    When to Contact Your Doctor

    While most side effects are mild, contact your care team if you experience:

  • Severe or persistent nausea/vomiting
  • Signs of pancreatitis (severe abdominal pain)
  • Changes in vision
  • Signs of allergic reaction
  • Your Majesta care team is available 24/7 to address any concerns.

    Medically reviewed

    Majesta Health Medical Team

    Clinical Editorial Team

    All Majesta Health medical content is clinically reviewed before publication by US-licensed physicians affiliated with our clinical infrastructure partner, MD Integrations (MDI). Reviewers hold active state medical licenses, are board-certified in primary care or obesity medicine, and specialize in GLP-1 receptor agonist therapy for chronic weight management. MDI is LegitScript certified and SOC 2 Type II accredited.

    Credentials and accreditation
    • US-licensed physicians affiliated with our clinical partner MD Integrations (LegitScript certified, HIPAA, SOC 2 Type II, ISO certified)
    • Board-certified in primary care and obesity medicine
    • Active state medical licensure required for every prescribing clinician
    • Active DEA registration where applicable (note: GLP-1 medications are not controlled substances)
    • Telehealth practice across all 50 US states and DC through the MD Integrations Medical Services Organization
    • Dispensing pharmacy partner: Belmar Pharma Solutions (LegitScript certified, NABP accredited, 503A and 503B compounding)
    Areas of expertise
    GLP-1 receptor agonist therapy (semaglutide, tirzepatide, liraglutide)Chronic weight managementObesity medicineCompounded medication clinical oversightTelehealth informed consent and patient screening
    Have a question for our medical team? See our full clinical team page or contact support.

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