Ozempic Side Effects: From Mild Discomfort to Serious Health Risks!

Remote Pharmacy Research Team
May 14, 2025

Ozempic is a prescription medication used to manage type 2 diabetes and support weight loss. It works by mimicking a natural hormone that helps control blood sugar and reduce appetite. While many people see positive results with Ozempic, the medication can also cause side effects — some mild, others more serious.

Understanding these effects is important for anyone considering or currently using Ozempic. This guide explains what to expect, when to seek medical help, and how to manage symptoms safely. We cover both common reactions and rare complications, helping you stay informed and prepared throughout your treatment.

Primary Uses of Ozempic

Ozempic is mainly used to treat type 2 diabetes. It helps lower blood sugar levels by increasing insulin release and slowing down digestion. This improves glucose control throughout the day, especially after meals. Ozempic is not used for type 1 diabetes or for treating diabetic emergencies.

Another common use of Ozempic is for weight loss, even though it was not originally designed for that. Many patients using Ozempic experience reduced appetite and a lower calorie intake, which leads to steady weight reduction over time. For this reason, doctors may prescribe it off-label to support weight management in people with obesity or overweight-related health issues.

Ozempic is given as a weekly injection, and it works best when combined with healthy eating and regular physical activity. It is not a quick fix but can be a helpful tool for long-term health goals.

FDA Status and Approval for Ozempic

Ozempic (semaglutide) received its first approval from the U.S. Food and Drug Administration (FDA) on December 5, 2017, for improving blood sugar control in adults with type 2 diabetes. ​

Drugs.com

In 2020, the FDA expanded Ozempic's indications to include reducing the risk of major cardiovascular events, such as heart attack, stroke, or death, in adults with type 2 diabetes and known heart disease. ​Most recently, in January 2025, the FDA approved Ozempic to reduce the risk of kidney disease progression, kidney failure, and cardiovascular death in adults with type 2 diabetes and chronic kidney disease. ​

Frequently Reported Ozempic Side Effects

Ozempic can cause several side effects, especially when starting the medication or increasing the dose. Most people experience mild symptoms that improve over time. These reactions are usually related to how Ozempic affects the digestive system.

Below are the most common side effects reported by patients using Ozempic:

Nausea

Nausea is the most common side effect of Ozempic. It often begins soon after the first dose or after a dose increase. The feeling may last for a few hours or come and go throughout the day.

Eating smaller meals and avoiding high-fat foods may help reduce nausea. If symptoms become severe or interfere with daily life, patients should speak with their doctor to adjust the dosage or schedule.

Vomiting

Some users may experience vomiting, especially during the first few weeks of treatment. This side effect is often linked to nausea and may improve as the body adjusts to the medication.

Vomiting can lead to dehydration, so it's important to drink fluids and report ongoing symptoms to a healthcare provider. A change in how or when the medication is taken may reduce the impact.

Diarrhea

Diarrhea can occur as Ozempic slows digestion and changes how the stomach processes food. This side effect is usually mild and temporary, but may become bothersome if persistent.

Staying hydrated and avoiding greasy or spicy foods can help. In most cases, diarrhea decreases after a few weeks as the body gets used to the drug.

Stomach Pain

Stomach pain or discomfort may happen after taking Ozempic. This may feel like cramping, pressure, or bloating. It can result from slower stomach emptying or changes in digestion.

Pain is typically mild and short-lived. If it becomes sharp, intense, or long-lasting, medical attention may be needed to rule out other issues, such as pancreatitis.

Constipation

Some users may experience constipation while using Ozempic. This may be due to changes in how food moves through the digestive system.

Drinking plenty of water, eating fiber-rich foods, and staying active can help manage constipation. If it continues or worsens, a doctor may suggest gentle laxatives or dietary changes.

Less Severe Reactions Linked to Ozempic

In addition to the more common digestive side effects, Ozempic may cause other mild symptoms. These reactions are usually temporary and do not require medical treatment unless they persist or worsen.

Some less severe side effects include:

  • Fatigue – Feeling tired or low on energy, especially during the first weeks of treatment. This may improve as the body adjusts to the medication.
  • Headache – Some people report mild headaches after starting Ozempic. Staying hydrated and getting enough sleep may help reduce this symptom.
  • Dizziness – A lightheaded feeling can occur, especially if blood sugar levels drop. Eating regular meals and monitoring glucose levels can help.
  • Injection site reactions – Mild redness, itching, or swelling where the shot is given may happen. Rotating injection sites and using proper technique can prevent discomfort.

Major Adverse Effects You Shouldn’t Ignore

While most people tolerate Ozempic well, some may experience serious side effects. These reactions are less common but can pose health risks if not treated quickly. Anyone using Ozempic should know the warning signs and seek medical help if these symptoms appear.

Pancreatitis

Severe stomach pain that does not go away, especially with nausea and vomiting, may be a sign of pancreatitis. This condition requires immediate medical attention. The pain often starts in the upper abdomen and may spread to the back.

Thyroid Tumors

In animal studies, semaglutide was linked to thyroid tumors. Although this effect has not been confirmed in humans, patients should watch for neck swelling, trouble swallowing, hoarseness, or a lump in the throat. These may be early signs of thyroid problems.

Gallbladder Issues

Ozempic may increase the risk of gallstones or gallbladder inflammation. Symptoms include pain in the upper right side of the abdomen, fever, nausea, or yellowing of the skin or eyes.

Kidney Problems

Severe dehydration from vomiting or diarrhea can lead to kidney injury. Signs include changes in urination, swelling in the legs, or confusion. People with existing kidney disease should use Ozempic with caution.

Severe Allergic Reactions

Although rare, serious allergic reactions may occur. Symptoms include rash, itching, shortness of breath, or swelling of the face or throat. These require emergency care.

If any of these symptoms appear, it is important to stop the medication and contact a doctor immediately. Early action can prevent more serious complications.

Long-Term Health Impacts of Ozempic Use

Ozempic is approved for long-term use, and many people take it for months or even years. When used as prescribed, it can offer lasting benefits. However, like any long-term medication, it may also lead to ongoing effects that require attention.

Weight Management and Blood Sugar Control

Long-term use of Ozempic helps maintain lower blood sugar levels and support steady weight loss. These effects can improve overall health, especially for people with type 2 diabetes or obesity-related conditions. Many patients also see better heart and kidney health over time.

Digestive Tolerance Over Time

Some digestive side effects, such as nausea or constipation, may fade with time. Others may continue in mild forms. Regular check-ins with a doctor help adjust the dose and improve comfort.

Nutrient Absorption and Eating Habits

Reduced appetite from Ozempic may lead to lower food intake. This can affect how the body absorbs nutrients. A balanced diet and regular blood tests help prevent deficiencies during extended use.

Unknown Long-Term Risks

Ozempic is still being studied for long-term safety, especially for people without diabetes who use it for weight loss. Risks such as thyroid tumors or gallbladder issues remain under review. Ongoing medical supervision is essential to detect and manage any emerging concerns.

Patients using Ozempic long-term should work closely with their healthcare provider to monitor progress, manage side effects, and adjust the plan as needed.

Are There Ozempic Side Effects Unique to Women?

Most Ozempic side effects affect men and women in similar ways. However, some women may notice specific reactions due to hormonal differences or reproductive health.

  • Menstrual Cycle Changes: Some women report irregular periods while using Ozempic. This may be linked to rapid weight loss or changes in metabolism, which can affect hormone levels. In some cases, cycles may become lighter, heavier, or delayed.
  • Nausea and Fatigue: Although common in all users, nausea and fatigue may feel stronger in some women, especially during the first weeks of treatment. Hormonal fluctuations and body composition may play a role in this sensitivity.
  • Impact on Fertility: Weight loss and improved insulin sensitivity can restore ovulation in women with conditions like polycystic ovary syndrome (PCOS). This may increase the chance of pregnancy. Women who do not plan to get pregnant should use birth control while on Ozempic.
  • Pregnancy and Breastfeeding Risks: Ozempic is not recommended during pregnancy or while breastfeeding. Animal studies have shown possible harm to unborn babies. Women should stop the medication at least 2 months before trying to conceive, as advised by healthcare providers.

Although rare, any unusual symptoms affecting reproductive or hormonal health should be discussed with a doctor. Personalized care helps ensure safe and effective treatment

What is "Ozempic Face"?

“Ozempic face” is a term used to describe a change in facial appearance caused by rapid weight loss while taking Ozempic. As the body loses fat, the face may look thinner, older, or more hollow. These changes are not caused by the drug itself but by the speed and amount of fat loss.

Cautions and Safety Information

Ozempic is effective for many people, but it may not be safe for everyone. Before starting treatment, it’s important to know who should avoid the medication, what factors to consider, and what to tell your doctor.

Who should not use Ozempic?

Ozempic should be avoided by people who:

  • Have a personal or family history of medullary thyroid cancer
  • Have Multiple Endocrine Neoplasia Syndrome type 2 (MEN 2)
  • Are pregnant or planning to become pregnant soon
  • Are breastfeeding
  • Have had a serious allergic reaction to semaglutide or similar medications

These conditions may increase the risk of severe complications. Always follow your doctor’s advice before starting or stopping treatment.

Key Considerations Before Starting Ozempic

Before beginning Ozempic, patients should review:

  • Other medications they are taking (especially insulin or oral diabetes drugs)
  • Kidney and liver function, since these organs help process the drug
  • History of pancreatitis, as Ozempic may increase the risk of recurrence
  • Gallbladder health, because weight loss drugs can increase the chance of gallstones
  • Your doctor may suggest lab tests or monitor you more closely if any of these apply.

Important Disclosures for Your Doctor Before Use

  • Be sure to tell your doctor if you:
  • Have had stomach or digestive issues
  • Have a history of depression or mood disorders
  • Use any herbal supplements or vitamins
  • Are using birth control or planning pregnancy
  • Have recently lost a large amount of weight

Sharing this information helps your doctor make safe and effective treatment decisions.

Interactions

Ozempic can interact with other medications and certain foods. These interactions may change how the drug works or increase the chance of side effects. Knowing how Ozempic reacts with common substances helps reduce risks and improve treatment results.

Drug and Food Interactions with Ozempic

Ozempic has no major food restrictions, but it’s still important to maintain a balanced diet. Some foods high in fat may worsen nausea or stomach discomfort, especially when starting the medication.

Alcohol should be used with caution. In people with diabetes, drinking alcohol can affect blood sugar levels and increase the risk of low blood sugar when combined with Ozempic.

There are also a few drug interactions to consider:

  • Insulin or insulin secretagogues (like sulfonylureas) – These can increase the risk of hypoglycemia when combined with Ozempic. Blood sugar levels should be monitored closely.
  • Other GLP-1 receptor agonists – Using more than one drug in this class is not recommended.
  • Diuretics or blood pressure medications – Dehydration from side effects like vomiting or diarrhea may worsen their effects.

How Ozempic Reacts with Other Medications

Ozempic can slow down how quickly the stomach empties. This may change how fast other oral medications are absorbed. If a person takes multiple daily medications, this effect could reduce their impact or delay results.

Tell your doctor about all drugs you take, including:

  • Prescription medications
  • Over-the-counter drugs
  • Vitamins and herbal products

This helps avoid unwanted reactions and ensures that all treatments work well together. In some cases, timing or dosage may need to be adjusted.

Overdose/Missed Dose

Taking Ozempic exactly as prescribed is important for safety and results. Mistakes can happen, so knowing what to do in case of an overdose or missed dose helps prevent complications.

Steps to Take After an Ozempic Overdose

An Ozempic overdose can lead to serious side effects, especially related to digestion and blood sugar levels. Symptoms may include:

  • Severe nausea or vomiting
  • Intense stomach pain
  • Dizziness or confusion
  • Low blood sugar (shaking, sweating, fast heartbeat)

If you suspect an overdose, contact a doctor or emergency service immediately. Do not wait for symptoms to worsen. Bring the medication package to the hospital, if possible, to help with treatment.

There is no specific antidote for semaglutide. Treatment focuses on managing symptoms and preventing dehydration or blood sugar drops.

What to Do If You Forget to Take Ozempic

If you miss a dose of Ozempic:

  • Take it as soon as you remember, as long as it’s within 5 days of your scheduled dose.
  • If more than 5 days have passed, skip the missed dose and wait until your next regular dose.
  • Do not double the dose to make up for the missed one.

Returning to your regular schedule is the safest way to continue treatment. If you miss doses often, talk to your doctor about strategies to help you stay on track — such as reminders or apps.

 Start your Ozempic treatment with Remote Pharmacy!

If you're ready to begin your Ozempic treatment, Remote Pharmacy makes the process easy, fast, and safe. Our licensed team helps you connect with a qualified provider, get a valid prescription, and receive your medication discreetly at your door.

Start your journey toward better health today. With Remote Pharmacy, you get trusted care without leaving home.

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