See also Warning section.
Nausea, vomiting, stomach upset, diarrhea, tiredness, dizziness, or constipation may occur. Nausea usually lessens as you continue to use semaglutide. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Vomiting/diarrhea that doesn't stop may result in dehydration. Contact your doctor promptly if you notice any symptoms of dehydration, such as unusual dry mouth/thirst or dizziness/lightheadedness.
Tell your doctor right away if you have any serious side effects, including: signs of kidney problems (such as change in the amount of urine), vision changes (such as decreased/blurred vision), fast heartbeat, mental/mood changes (such as depression, thoughts of suicide), signs of low blood sugar (sudden sweating, shaking, fast heartbeat, hunger, blurred vision, dizziness, tingling hands/feet), signs of pancreatitis or gallbladder disease (such as nausea/vomiting that doesn't stop, severe stomach/abdominal pain).
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.