Does Ozempic Make You Tired? 7 Tips to Manage Fatigue

If you’re considering using Ozempic for diabetes or off-label weight loss, one of the side effects you may experience is fatigue. Ozempic contains semaglutide as its active ingredient. Although fatigue is not among its most common side effects, some people feel tired while using it, especially when eating fewer calories, experiencing nausea, or becoming dehydrated.

Like nausea, vomiting, and other stomach-related adverse reactions, fatigue should ease off once your body adjusts to the medication. However, some individuals may experience it throughout their treatment period.

In this article, you’ll learn more about whether Ozempic can make you tired, when you should be concerned, and how you can minimize it.

Key TakeawaysFatigue is an expected side effect of using Ozempic. In clinical trials, over 0.4% of participants treated with Ozempic experienced this symptom. Ozempic-induced fatigue differs from typical physical exhaustion because it often doesn’t get better with sleep. It may take a few days to weeks before it subsides, depending on how your body responds to the medication. When fatigue persists for several weeks and is accompanied by dizziness, fainting, or dark urine, consult your doctor to rule out underlying causes. Fatigue and other common side effects can often be alleviated with lifestyle changes, such as maintaining a healthy diet, engaging in 150 minutes of physical activity, and getting sufficient rest.

Does Ozempic Make You Tired?

Yes, fatigue is an expected side effect of using Ozempic. In FDA-monitored clinical trials of semaglutide, the active ingredient in Ozempic, more than 0.4% of participants experienced fatigue, along with dizziness and dysgeusia, a type of taste disorder.

Why does Ozempic make you tired? Ozempic-induced fatigue occurs for many reasons. One reason is the medication’s appetite-suppressing and delayed gastric emptying effects. The slowed movement of food through the stomach makes you feel full for longer. As a result, you feel satiated even with a small meal, reducing your overall carb intake. If you feel tired after taking Ozempic, it’s likely because you’re eating less than before the treatment.

You may also feel tired after using Ozempic due to the gastrointestinal side effects, such as nausea and vomiting. Lastly, Ozempic lowers blood sugar levels. If your fasting blood sugar reaches 70 milligrams per deciliter (mg/dL) or below, you may experience fatigue as an early sign of hypoglycemia.

What Fatigue Feels Like on Ozempic

Ozempic-caused fatigue differs from typical tiredness because it doesn’t improve with a day’s rest alone. When you’re tired due to physical exhaustion, a day or two of sufficient rest often improves your condition. You may continue to feel weak, sleepy, and exhausted even after adequate shuteye. The kind of fatigue caused by Ozempic can last for a few days or weeks and doesn’t improve with sleep alone. This constant state of low energy happens as your body adjusts to the medication’s effects. While rest alone won’t resolve it, fatigue typically improves over time.

How Long Does Ozempic-Induced Fatigue Last?

Ozempic-induced fatigue can last for a few days to weeks, depending on how well your body tolerates the side effects. Semaglutide affects each patient differently, so the severity level of the side effects also varies.

In clinical trials, most participants experienced minor gastrointestinal adverse reactions like constipation. However, if you’re sensitive to gastrointestinal side effects, you may experience severe nausea or vomiting, which can increase fatigue.

Your overall state of health, including co-existing conditions, is also a factor in how long fatigue and other side effects last. For instance, one user on Reddit reported that they were diagnosed with extreme hypoglycemia before taking Ozempic, and continued to experience fatigue even after 2.5 years of treatment. Another user shared that they’ve been on Ozempic for seven weeks and are experiencing less frequent fatigue compared to when they started the treatment. Another user mentioned they only experienced fatigue after the second injection.

So, how long does the fatigue last with Ozempic? There’s no fixed timeline for how long fatigue lasts, as it varies from person to person. However, it should improve within a few weeks. Otherwise, consult your doctor so they can examine you. Sometimes, fatigue may be a symptom of another underlying condition.

Other Side Effects of Ozempic 

Below are some common side effects that often accompany fatigue, along with tips to help alleviate them.

• Drowsiness: Get 7-9 hours of sleep and, if possible, ban screens from the bedroom.
• Low mood: Increase your water intake and consult your doctor if symptoms persist.
• Dizziness: This symptom often occurs due to low blood sugar. Check your glucose levels, and if it’s low, consume 15 grams of fast-acting carbohydrates. Check again after 15 minutes, and repeat if necessary.
• Dysgeusia or changes in your taste: Brush your teeth, floss, and use alcohol-free mouthwash to minimize the bacteria that may contribute to altered taste.
• Nausea: Eat crackers, toast, and other bland meals that are gentle on the stomach.
• Vomiting: Eat smaller, more frequent meals throughout the day.
• Diarrhea: Stay hydrated and avoid eating spicy and greasy foods.
• Constipation: Drink more water and eat foods rich in fiber.
• Abdominal pain: Avoid lying down after eating and adjust your diet.

Ozempic-related fatigue may increase daytime sleepiness. You may find yourself taking longer naps during the day. When exhaustion gets into your day-to-day activities, you may also experience changes in your mood. Some users on Reddit reported struggling to work, clean, or shop for groceries due to extreme tiredness.

Some people may experience a decline in their mood during treatment. This side effect hasn’t been noted in clinical trials, but researchers hypothesize that mood swings may happen due to how Ozempic interacts with the brain’s reward system. Ozempic influences certain areas of the brain that regulate appetite, which can make eating less pleasurable. This could be the reason why some people may report feeling depressed while using Ozempic.

Fatigue and other side effects should improve within a few weeks. If symptoms persist, consult your doctor.

Tips to Minimize Fatigue and Other Ozempic Side Effects

Here are some suggestions to minimize fatigue and other adverse reactions while using Ozempic.

1. Drink Plenty of Water

During treatment, you could experience dehydration and vomiting. Drink plenty of water or eat fruits and vegetables with high water content, such as cucumber and watermelon, to prevent dehydration.

2. Be Selective of the Food You Eat

Avoid eating fried and spicy foods as they can worsen gastrointestinal side effects. Instead, choose nutrient-rich foods that provide your body with what it needs to function optimally. Since Ozempic suppresses appetite, small meal portions can make you feel full. Make each meal count by ensuring the foods on your plate are packed with essential vitamins and minerals. Eat lean proteins, such as chicken breast and seafood. Don’t forget healthy fats, such as nuts and avocados. Lastly, opt for non-starchy vegetables, such as carrots, asparagus, and broccoli, for a diabetes-friendly diet while on Ozempic.

3. Avoid Sugary Foods

Eating baked goods, sweets, and drinking soda can cause blood sugar fluctuations, which counteract the glucose-lowering effects of Ozempic. These foods also worsen your symptoms, so give them a pass while you’re on treatment.

4. Exercise Regularly

The American Diabetes Association recommends incorporating regular physical activity to naturally lower blood sugar levels. Aim for at least 150 minutes of moderate-intensity workout every week to stay healthy and reduce the side effects.

5. Get Adequate Sleep

Establish a consistent sleep routine by going to bed and waking up at the same time every day. Doing this will regulate your circadian rhythm and also provide you with the energy you need for doing tasks throughout the day. Aim for 7-9 hours of sleep. If you still feel tired after this, ask your doctor about how long you should sleep.

6. Avoid Habits That Can Interfere With Ozempic

Skip tobacco or alcohol, as they can potentially worsen the side effects and reduce the effectiveness of semaglutide.

7. Consider Taking Ozempic With Food or Before Bedtime

If you’re prone to gastrointestinal adverse reactions, consider taking your semaglutide shot after a meal to minimize stomach irritation. Moreover, if you experience intense nausea, consider taking your injection right before bedtime so you can sleep through the symptom. These tips are general and may or may not work for everyone. Talk to your doctor for personalized advice on managing Ozempic’s side effects.

When to Call Your Doctor About Ozempic-Related Fatigue

Here are some signs that you should visit your healthcare provider to get a check-up.

• Fatigue is worsening or doesn’t improve after a few weeks
• It’s accompanied by dizziness and fainting, which may indicate you have low blood sugar
• You feel tired, and at the same time, the color of your urine is dark, which could signal a rare but serious side effect like pancreatitis

Fatigue is a common symptom of many health conditions. A few of these include:

• Depression
• Heart disease
• Hypothyroidism and hyperthyroidism
• Anemia
• Hepatitis
• Liver disease
• Vitamin D deficiency
• Lupus

The point is, you could be experiencing fatigue not due to Ozempic but because of an underlying health condition. Ozempic-induced exhaustion improves after a few weeks. If it doesn’t, visit your doctor to determine its root cause.

Should You Switch Medications If Fatigue Doesn’t Go Away?

If you’re unable to tolerate fatigue and other side effects, switching to a different medication is an option. Your doctor will determine which alternative medication is the best fit for you.

Alternatively, they can also adjust the dose. For example, if you’re experiencing more intense fatigue because you’re taking the maximum dose of Ozempic, your doctor may reduce it to improve your symptoms.

If you need to switch medications, your doctor may recommend the following options:

• Rybelsus: It also contains semaglutide but in oral form and is approved for type 2 diabetes.
• Wegovy: It uses semaglutide as well, but is approved for the treatment of obesity.
• Mounjaro: It contains tirzepatide and is approved for type 2 diabetes.
• Zepbound: It also contains tirzepatide but is cleared for chronic weight management.

Bottom Line: Fatigue Is an Expected Side Effect of Ozempic

So, does Ozempic make you tired? Yes, fatigue is an anticipated symptom, so it shouldn’t be a cause for concern unless it persists or worsens after a few weeks. You may feel more tired while using Ozempic, but this and other side effects often subside once your body has adjusted to the medication.

You can minimize fatigue and other common side effects by adopting positive lifestyle habits, such as eating healthier foods, getting sufficient sleep, and exercising regularly.

If fatigue worsens or is accompanied by other symptoms, such as fainting or dark urine, schedule a consultation with your doctor to rule out underlying causes. Your doctor may recommend an alternative medication or reduce the dose if you can’t tolerate the side effects. They’ll help you make decisions to improve your experience with the medication.

Frequently Asked Questions

Does Ozempic make you dizzy?

Yes, dizziness is one of the reported side effects of Ozempic. Fortunately, it’s temporary and subsides after a few weeks.

Does Ozempic fatigue go away?

Yes, fatigue improves or goes away once your body adjusts to the effects of Ozempic. It may take a few days, weeks, or months, depending on your lifestyle and how your body responds to the medication.

Can Ozempic make you gain weight?

Ozempic’s active ingredient, semaglutide, is known to cause rapid weight loss. If you gain weight during treatment, it’s likely because you’re not following lifestyle recommendations, such as eating a healthy diet and exercising regularly. Another possible reason is that you’re not on the optimal dose to promote weight loss.

How to address low energy with Ozempic?

Lifestyle adjustments, such as eating nutritious foods, engaging in gentle physical activity, getting enough sleep, and drinking more water, can help combat fatigue.

Is Ozempic supposed to make you feel sleepy?

Yes, Ozempic can cause fatigue, which may lead to daytime drowsiness. Although not common, it’s an expected side effect. Be sure to get adequate rest and eat foods rich in vitamins and minerals to support your energy levels.

What happens if you eat sugar while taking Ozempic?

Eating sugary foods, such as sweets, soda, and baked goods, while taking Ozempic can lead to blood sugar spikes and cancel the glucose-lowering effects of the medication.

Why does Ozempic make me sleepy?

One reason Ozempic may cause sleepiness is that it lowers blood sugar levels. When blood sugar levels drop too low, it deprives your body of a steady energy source, which may lead to symptoms such as fatigue and drowsiness.

Can Ozempic cause depression?

Depression isn’t a documented side effect of Ozempic. However, some users share on forums and social media that they experience mood disturbances. Researchers hypothesize it might be due to how semaglutide interacts with the brain’s reward system to suppress appetite. If you have a history of depression before using Ozempic, the risk of mood swings may be high during the treatment. Currently, no conclusive evidence can prove that Ozempic is associated with depression.

Sources

Fatigue. (n.d.). Mayo Clinic. https://www.mayoclinic.org/symptoms/fatigue/basics/definition/sym-20050894

Hypoglycemia – Symptoms and causes. (n.d.). Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/hypoglycemia/symptoms-causes/syc-20373685

U.S. Food and Drug Administration. (2025). Ozempic (semaglutide) injection: Prescribing information. Retrieved from https://www.accessdata.fda.gov/drugsatfda_docs/label/2025/209637s025lbl.pdf