Ozempic Side Effects: What You Need to Know Before Starting Treatment

Apr 09, 2026 Updated Apr 09, 2026

Ozempic has become a popular medication for managing type 2 diabetes and supporting weight loss. But what are the potential side effects you should be aware of?

Ozempic, also known by its generic name semaglutide, has gained significant attention for its effectiveness in managing type 2 diabetes and aiding weight loss. It works by mimicking a natural hormone in your body called GLP-1 (Glucagon-Like Peptide-1), which helps regulate blood sugar and can make you feel fuller. While it offers many benefits, understanding its potential side effects is crucial before you begin treatment.

What is Ozempic and How Does it Work?

Ozempic is an injectable medication that belongs to a class of drugs called GLP-1 receptor agonists. These medications help your body release more insulin when blood sugar levels are high, reduce the amount of sugar produced by your liver, and slow down how quickly food leaves your stomach. This combination helps to lower blood sugar and can lead to weight loss.

Common Ozempic Side Effects

Most people who take Ozempic experience some side effects, especially when first starting the medication or when the dose is increased. These are usually mild and often improve over time as your body adjusts. The most frequently reported side effects include:

Nausea: Feeling sick to your stomach.
Vomiting: Throwing up.
Diarrhea: Loose, watery stools.
Constipation: Difficulty having bowel movements.
Abdominal pain: Stomach discomfort.

To help manage these, your doctor may suggest starting with a low dose and gradually increasing it. Eating smaller meals and avoiding fatty foods can also be helpful.

Less Common but Serious Side Effects

While rare, some more serious side effects can occur. It is important to be aware of these and seek medical attention if you experience them:

Pancreatitis: Inflammation of the pancreas, which can cause severe stomach pain, nausea, and vomiting.
Gallbladder problems: Symptoms might include severe pain in your upper stomach, fever, or yellowing of the skin or eyes.
Kidney problems: Worsening kidney function or new kidney issues, especially in people who already have kidney disease.
Thyroid tumors: In studies with rodents, Ozempic caused thyroid C-cell tumors. It is not known if Ozempic causes these tumors, including medullary thyroid carcinoma (MTC), in humans.
Low blood sugar (hypoglycemia): Especially if you take Ozempic with other medications for diabetes, such as insulin or sulfonylurea. Symptoms include dizziness, shakiness, sweating, and confusion.

Managing Side Effects and When to Seek Help

If you experience common side effects, try adjusting your diet, staying hydrated, and discussing strategies with your healthcare provider. For more severe or persistent symptoms, or if you suspect any of the serious side effects listed above, contact your doctor immediately. Do not hesitate to seek emergency care if symptoms are severe.

Always remember that Ozempic is a prescription medication, and it is important to discuss all potential risks and benefits with your healthcare provider. They can help determine if Ozempic is the right treatment for you and guide you on managing any side effects.