What Happens When You Take Trulicity? Side Effects Guide for New Users
Managing type 2 diabetes often involves more than just checking blood sugar levels and eating healthy foods. Many people need medication to help control their blood sugar and prevent long-term health problems. One of the medicines that doctors prescribe for type 2 diabetes is Trulicity. Trulicity is an injectable medication that helps keep blood sugar under control. It is also known to help reduce the risk of heart disease in people with diabetes.
Trulicity belongs to a group of drugs called GLP-1 receptor agonists. These drugs work by mimicking a hormone in the body called GLP-1, which helps control blood sugar levels. When you eat, GLP-1 helps your pancreas release insulin. Insulin is the hormone that moves sugar from your blood into your cells. GLP-1 also lowers the amount of sugar the liver makes and helps slow down how fast food leaves your stomach. This helps keep blood sugar levels steady after meals.
Trulicity is given once a week as an injection under the skin. It comes in a prefilled pen that makes it easier for people to give themselves the shot. If you’re considering cost, here’s a breakdown of how much Trulicity really costs and what factors influence the price. For many patients, Trulicity is part of a larger diabetes care plan. This usually includes healthy eating, regular exercise, and routine doctor visits. People who take Trulicity should still check their blood sugar regularly, especially if they are also taking other diabetes medications that can cause low blood sugar.
Like all medications, Trulicity can cause side effects. Some people have mild side effects that go away on their own, while others may have more serious problems. It is important to know what to expect when starting Trulicity so that you can be prepared. Talking to a doctor or healthcare provider can help you understand how to use Trulicity safely and what to do if side effects occur.
What Happens When You First Take Trulicity?
When you first take Trulicity, your body begins to adjust to the medication. Trulicity works by activating GLP-1 receptors, which leads to several changes inside the body. These changes are designed to help control blood sugar but can also cause side effects, especially when starting the medicine.
One of the first things you might notice is that you feel fuller faster when eating meals. Trulicity slows down how quickly food leaves your stomach. This helps reduce large spikes in blood sugar after eating, but it can also lead to feelings of fullness or bloating.
Some people feel mild nausea during the first few days or weeks of taking Trulicity. This is a common reaction because the medication affects digestion. The body needs time to adjust to these changes. Eating smaller meals and avoiding greasy or spicy foods may help reduce nausea.
Your blood sugar levels may begin to drop as Trulicity starts working. If you are also using insulin or other diabetes medicines that lower blood sugar, you might be at risk for hypoglycemia. Hypoglycemia happens when blood sugar goes too low. Symptoms include shakiness, sweating, confusion, and dizziness. It is important to monitor blood sugar closely and know how to treat low blood sugar if it happens.
Some people experience mild digestive changes, such as diarrhea or constipation, when they first start Trulicity. These side effects usually improve after a few weeks as the body gets used to the medication.
Trulicity Side Effects
Trulicity, like most medications, can cause side effects. Some are mild and temporary, while others may be more serious. Knowing the possible side effects can help you prepare for what to expect.
Common or Mild Side Effects:
These tend to be gastrointestinal and generally resolve within days or weeks. They include:
- Nausea (experienced by about 12–21% of users)
- Vomiting
- Diarrhea or constipation
- Abdominal (belly) pain, bloating, or indigestion
- Decreased appetite
- Fatigue or weakness
- Injection site reactions such as rash or irritation
- Headache
- Flatulence and belching
These mild effects are often dose-dependent, becoming slightly more likely or severe with higher doses of Trulicity.
What Are the Worst Side Effects of Trulicity?

Though less common, Trulicity can cause serious adverse effects, some requiring immediate medical attention:
- Severe Allergic Reactions: Symptoms such as breathing problems, wheezing, swelling of the face or throat, hives, dizziness, or fainting require immediate emergency care.
- Pancreatitis (Inflammation of the Pancreas): Presents as severe abdominal pain often radiating to the back, sometimes with vomiting. If these symptoms occur, discontinue Trulicity and call your healthcare provider immediately.
- Thyroid Tumors / Thyroid Cancer Risk: Trulicity carries a boxed warning about the risk of thyroid C-cell tumors including medullary thyroid carcinoma (MTC). Symptoms to watch for include a lump or swelling in the neck, hoarseness, difficulty swallowing, or shortness of breath. This risk is based on animal studies; the risk in humans is unknown. Trulicity should not be used by people with personal or family history of MTC or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).
- Hypoglycemia (Low Blood Sugar): Especially when used with other diabetes medications like sulfonylureas or insulin, low blood sugar episodes can occur.
- Kidney Damage: Symptoms include dark or cloudy urine, swelling in legs, fatigue, and decreased urination. Might occur due to dehydration from gastrointestinal side effects or direct drug effects.
- Diabetic Retinopathy Worsening: Some patients may experience eye problems related to diabetes.
- Gallbladder Disease: Including gallstones and cholecystitis, has been reported rarely.
- Severe Digestive Problems, Severe Constipation or Diarrhea: Can happen occasionally and may require assessment.
Additional Notes:
- Side effects tend to be dose-dependent. Starting at a lower dose and titrating upward can mitigate some side effects.
- Patients are advised to inform their healthcare provider about all medical conditions, especially pancreatic, thyroid, kidney, liver diseases, or history of eye problems before starting Trulicity.
- Any persistent, worsening, or concerning side effects should be promptly discussed with a healthcare professional.
If you experience severe side effects or Trulicity isn’t well-tolerated, your doctor may suggest switching medications. You can also explore alternatives to Mounjaro that may better fit your treatment plan.
How to Deal with Trulicity Side Effects?
Managing side effects is key to successful treatment with Trulicity. Here are effective Trulicity nausea tips and strategies to reduce digestive discomfort:
Tips for Nausea
- Eat smaller meals more often instead of large meals.
- Avoid foods that are greasy, spicy, or high in fat.
- Drink plenty of water to stay hydrated.
- Eat bland foods like crackers, rice, or toast if your stomach feels upset.
Tips for Digestive Issues
- If you have diarrhea, drink fluids with electrolytes to avoid dehydration.
- If you have constipation, add fiber to your diet and drink more water.
- Gentle activities like low-intensity exercise for weight loss, such as walking, can support digestion and help manage weight alongside Trulicity.
Monitoring Blood Sugar
- Check your blood sugar regularly, especially if you are taking insulin or other medications that lower blood sugar.
- Keep glucose tablets or snacks with you in case of low blood sugar.
- Talk to your doctor about adjusting other diabetes medications if needed.
Watch for Serious Symptoms
- Know the signs of pancreatitis, allergic reactions, and kidney problems.
- Contact your doctor immediately if you have severe stomach pain, trouble breathing, or swelling of your face or throat.
Talk to Your Healthcare Provider
- Always report side effects to your doctor.
- Never stop taking Trulicity without medical advice. And if you’re considering any supplements to complement your diabetes care, make sure to avoid these common mistakes when buying supplements online.
- Your doctor may adjust your dose or suggest ways to reduce side effects.
How Long Before Trulicity Side Effects Wear Off?
Most Trulicity side effects begin shortly after starting the medication, often within the first few doses. Common symptoms like nausea, diarrhea, constipation, and mild stomach discomfort usually peak during the first two to four weeks of treatment. As your body adjusts to Trulicity, these side effects often lessen in intensity or go away completely. For many patients, the worst of the side effects fade after the first month, making the medication easier to tolerate over time.
However, not everyone experiences side effects the same way. Some individuals may continue to have mild symptoms for a longer period, especially if they are sensitive to medications that affect digestion. Serious side effects, such as signs of pancreatitis or allergic reactions, require immediate medical attention and may not resolve on their own. If side effects persist beyond a few weeks or interfere with daily life, it’s important to speak with your healthcare provider. They can help adjust your treatment plan, suggest ways to manage symptoms, or recommend switching to a different medication if needed.
How Long Does It Take Your Body to Adjust to Trulicity?
For most people, the body begins to adjust to Trulicity within the first few weeks of treatment. The digestive side effects are usually the first signs that the medication is working. These side effects often improve within 4 to 6 weeks as the body adapts.
Some people may take longer to adjust, especially if they are sensitive to medications that affect digestion. It is important to follow the dosing instructions carefully and give the body time to get used to the changes. Most people start with a lower dose of Trulicity and slowly move to a higher dose if needed. This gradual increase can help reduce the chance of side effects.
Blood sugar improvements usually begin within the first week of treatment, but it may take several weeks to see the full effect. Trulicity helps lower blood sugar after meals and also reduces fasting blood sugar levels. Many people also notice some weight loss over time, although this is not the primary purpose of the medication.
Doctors often recommend regular checkups during the first few months of taking Trulicity to make sure it is working well and to monitor for side effects. These checkups are important for making any needed adjustments to your treatment plan.
Final Thoughts
Starting a new medication like Trulicity can bring both benefits and challenges. Trulicity is effective at helping many people manage their type 2 diabetes and reduce the risk of heart disease. However, it is important to understand the possible side effects and know how to handle them if they occur.
Most side effects from Trulicity are mild and go away as your body gets used to the medication. Nausea, diarrhea, and feelings of fullness are common but usually improve over time. More serious side effects are rare but should be taken seriously if they happen. Always talk to your healthcare provider if you experience problems or have questions about your medication.
Managing diabetes is a long-term journey that involves many steps, including lifestyle changes and medications like Trulicity. Working closely with your doctor and healthcare team is the best way to stay healthy and avoid complications. If you need access to Trulicity at an affordable price, you can buy Trulicity online from Canada through 365Script Care. This can help make your medication routine easier while continuing to work with your doctor to monitor your health and adjust your treatment as needed.