An image of a female doctor looking at a chart of Saxenda side effects.

Saxenda Side Effects and Safety Considerations: What to Know Before Starting

Dr. Matthew Olesiak
SANE MD Chief Medical Director at SANESolution

Introduction

Saxenda or Saxenda Liraglutide is a prescription medication that has gained recognition as a supportive tool to help certain individuals lose weight. Approved by the FDA, Saxenda works by mimicking a hormone in the body that regulates appetite, assisting compatible users to reduce calorie intake and potentially achieve weight-loss goals. While its efficacy has been demonstrated in clinical trials, it’s crucial to understand that Saxenda, like any medication, may come with side effects and safety considerations.

Before starting Saxenda, patients should know their Weight Loss Drug Type (quiz here) and be aware of both the common and rare side effects, as well as potential risks for those with certain medical conditions. Thoroughly evaluating these factors can help ensure safe and effective use while minimizing potential health complications.

This article provides a comprehensive guide to Saxenda’s side effects and safety profile, equipping readers with the information they need to make an informed decision. Whether you’re considering Saxenda or have just started, this guide is a valuable resource for understanding its impact on your health.

Key Takeaways

  • Saxenda may cause common side effects like nausea, vomiting, or fatigue, as well as rare but serious risks such as pancreatitis or thyroid tumors.
  • Certain groups, including those with specific medical conditions or medication regimens, should approach Saxenda with caution.
  • Consulting a healthcare provider is essential to evaluate the benefits, risks, and suitability of Saxenda for your individual health needs.

What Is Saxenda?

Saxenda is a prescription medication designed to assist with body weight management in a subset of individuals who struggle with obesity or weight-related medical conditions. It contains liraglutide, a glucagon-like peptide-1 (GLP-1) receptor agonist, which mimics a hormone that helps regulate appetite and food intake. By helping enhance feelings of fullness and potentially reducing hunger, Saxenda supports calorie reduction and a reduction in baseline body weight when combined with a reduced-calorie diet and increased physical activity.

The U.S. Food and Drug Administration (FDA) approved Saxenda in 2014 for a subset of adults with a body mass index (BMI) of 30 or higher or those with a BMI of 27 or higher who also have at least one weight-related condition such as type 2 diabetes, high blood pressure, or high cholesterol. It is also approved for use in adolescents aged 12 to 17 who meet specific criteria.

Saxenda is not a standalone solution for losing weight; it is intended to complement lifestyle changes, including healthy eating and regular exercise. Healthcare providers typically prescribe Saxenda for certain individuals who have not been successful with other weight-loss methods and who are committed to long-term changes. Knowing their Weight Loss Drug Type, understanding how Saxenda works, and determining its intended use can help patients determine if it aligns with their weight-loss goals.

Common Side Effects of Saxenda

Saxenda, while a promising option for long-term weight management, is associated with several common side effects. These effects are typically mild to moderate and often decrease as the body adjusts to the medication.

Below are the most frequently reported side effects, their causes, and tips for managing them.

Nausea, Vomiting, Diarrhea, and Constipation

Digestive issues are the most commonly reported side effects of Saxenda. Nausea is particularly prevalent, especially when starting treatment or increasing the dose. Vomiting, diarrhea, and constipation may also occur.

These symptoms are linked to Saxenda’s mechanism of action as a GLP-1 receptor agonist, which slows gastric emptying. While this helps control appetite, it can also lead to discomfort in the digestive system.

Management Tips:

  • Start with the lowest prescribed dose and gradually increase it as directed to help your body adjust.
  • Eat smaller, more frequent meals to reduce gastrointestinal distress.
  • Stay hydrated and consider consuming electrolyte-rich fluids if experiencing diarrhea or vomiting.

Fatigue and Dizziness

Some individuals may feel unusually tired or dizzy when taking Saxenda. These side effects could result from changes in blood sugar levels, as Saxenda influences how the body processes insulin. Fatigue may also be a natural response as the body adjusts to a lower calorie intake due to appetite suppression.

Management Tips:

  • Ensure you’re consuming adequate nutrients to support energy levels.
  • Avoid activities requiring total concentration, such as driving, if dizziness occurs.
  • Report persistent or severe symptoms to your healthcare provider.

Changes in Appetite

Saxenda’s primary function is to suppress appetite, which can lead to noticeable changes in eating habits. While this effect is intentional and contributes to weight loss, some individuals may feel overly full or lack interest in food, which can sometimes lead to nausea.

Management Tips:

  • Monitor your calorie and nutrient intake to ensure you’re meeting your dietary needs.
  • Adjust meal portions to suit your appetite without forcing yourself to eat excessively.

Why These Side Effects Occur

Saxenda works by mimicking the effects of a natural hormone called GLP-1, which regulates appetite and digestion. By activating GLP-1 receptors, Saxenda slows down the movement of food through the stomach and influences the brain’s hunger signals.

While this mechanism supports weight loss, it can also disrupt the digestive system and temporarily affect energy levels.

When to Seek Medical Advice

While common side effects are typically manageable and temporary, it’s important to see a healthcare professional if symptoms persist, worsen, or interfere with daily activities. Your healthcare provider can recommend adjustments to your treatment plan or suggest strategies to alleviate side effects.

Understanding and managing these common side effects can help you use Saxenda more effectively and comfortably as part of your weight-loss journey.

Serious Side Effects and Risks

While Saxenda is generally well-tolerated, it carries the risk of rare but severe side effects. Recognizing these potential risks is essential to ensuring safe use and prompt intervention if complications arise.

Below is an overview of the most significant risks, the symptoms to watch for, and the importance of medical guidance.

Pancreatitis

Pancreatitis, or inflammation of the pancreas, is a rare but severe potential side effect of Saxenda. Signs of pancreatitis include intense abdominal pain that may extend to the back, along with nausea, vomiting, and fever. Pancreatitis can be life-threatening if untreated.

What to Watch For:

  • Persistent or intense stomach pain.
  • Pain that worsens after eating.
  • Nausea or vomiting that does not subside.

If you suspect pancreatitis, discontinue Saxenda immediately and seek medical attention. Clinical trials suggest pancreatitis is rare, occurring in less than 1% of patients, but individuals with a history of pancreatic issues may be at higher risk.

Gallbladder Problems

 

What to Watch For:

  • Sudden, sharp pain in the upper abdomen or right shoulder.
  • Yellowing of the skin or eyes (jaundice).
  • Persistent nausea or vomiting.

Gallbladder issues are more frequent in patients experiencing significant weight loss. In clinical studies, gallstones occurred in about 1% to 2% of users. Routine monitoring and maintaining gradual weight loss can help mitigate these risks.

Thyroid Tumors

Saxenda carries a warning for the potential risk of thyroid tumors, including medullary thyroid carcinoma (MTC), a rare type of thyroid cancer. While this risk has primarily been observed in animal studies, its relevance to humans remains uncertain.

The medication is not recommended for individuals with a personal or family history of MTC or multiple endocrine neoplasia syndrome type 2 (MEN 2).

What to Watch For:

  • A lump or swelling in the neck.
  • Difficulty swallowing or breathing.
  • Persistent hoarseness.

Although cases of thyroid tumors in clinical trials were extremely rare, disclosing any thyroid-related medical history to your doctor is critical before starting Saxenda.

Kidney Problems

Saxenda may lead to dehydration due to side effects like nausea, vomiting, and diarrhea, increasing the risk of kidney problems or exacerbating pre-existing kidney conditions. Symptoms include reduced urine output, swelling in the legs or ankles, and fatigue.

What to Watch For:

  • Difficulty urinating or noticeable changes in urine output.
  • Swelling or puffiness around the ankles.
  • Unexplained fatigue or confusion.

Staying hydrated and monitoring kidney function through regular checkups can help reduce the risk. Severe kidney issues were reported in less than 1% of clinical trial participants.

Allergic Reactions

In rare cases, patients may experience an allergic reaction to Saxenda. Symptoms can vary from mild skin rashes to severe anaphylaxis, a life-threatening condition that demands immediate medical intervention.

What to Watch For:

  • Rash, itching, or hives.
  • Swelling of the face, lips, tongue, or throat.
  • Trouble breathing or swallowing.

While severe allergic reactions are extremely rare, any signs of hypersensitivity should be promptly addressed by a healthcare provider.

Saxenda Side Effects and Safety Considerations Infographic

Statistical Likelihood of Serious Side Effects

Serious side effects are rare, typically affecting less than 1% of Saxenda users in clinical trials. Pancreatitis and gallstones were among the most commonly reported severe issues, but thyroid tumors and kidney problems were exceedingly infrequent.

The likelihood of experiencing these effects may increase with pre-existing conditions or improper use of the medication.

The Importance of Disclosing Full Medical History

A thorough medical history is vital to assess the risks of using Saxenda. Inform your healthcare provider of any history of:

  • Thyroid disorders, including MTC or MEN 2.
  • Pancreatic or gallbladder issues.
  • Kidney problems or frequent dehydration.
  • Allergies to medications or ingredients in Saxenda.

This information enables your doctor to make informed recommendations and monitor for potential complications. Saxenda is not suitable for everyone, and full disclosure ensures that you receive the safest and most effective treatment tailored to your needs.

Understanding these serious risks allows you to use Saxenda responsibly and recognize when to seek medical advice, ensuring your weight-loss journey remains as safe as possible.

Who Should Avoid Saxenda?

Saxenda is not suitable for everyone, and certain individuals should avoid its use due to potential risks and contraindications.

Below are the groups at higher risk and the reasons why Saxenda may not be appropriate for them.

Pregnant or Breastfeeding Individuals

Saxenda is not recommended for use during pregnancy or while breastfeeding. Weight loss during pregnancy can harm the unborn baby, and Saxenda’s effects on fetal development are not fully understood. Similarly, it is unknown whether Saxenda passes into breast milk, making it unsuitable for breastfeeding individuals.

Pregnant women should focus on healthy nutrition and weight gain to support their baby’s development instead of using weight-loss supplements or medications.

History of Thyroid Cancer or Multiple Endocrine Neoplasia Syndrome (MEN 2)

Saxenda carries a warning for the potential risk of medullary thyroid carcinoma (MTC), a rare form of thyroid cancer, as observed in animal studies. These findings have raised concerns about the potential link between thyroid cancer Saxenda may pose, although this has not been definitively proven in humans.

Individuals with a personal or family history of MTC or MEN 2 are advised to avoid Saxenda due to a potentially heightened risk. Alternative weight-loss strategies should be discussed with a healthcare provider.

Severe Gastrointestinal Issues or Pancreatitis

Saxenda slows gastric emptying, which can exacerbate pre-existing gastrointestinal conditions such as gastroparesis. Additionally, it has been linked to rare cases of pancreatitis, a potentially life-threatening inflammation of the pancreas. Individuals with a history of severe gastrointestinal problems or pancreatitis should avoid Saxenda to prevent worsening their condition.

Avoiding Saxenda in these cases ensures that individuals are not exposed to unnecessary risks that could compromise their health. If you fall into any of these categories, consult your healthcare provider to explore safer alternatives for managing weight.

Drug Interactions and Warnings

Saxenda, while supporting weight management, can interact with other medications, potentially leading to adverse effects or reduced efficacy. It’s crucial to understand these interactions and discuss your current medications and supplements with your healthcare provider before starting Saxenda.

Insulin and Other Diabetes Medications

Saxenda is not recommended for use with insulin due to its potential to increase the risk of hypoglycemia (low blood sugar). Both medications affect glucose levels, and combining them can lead to dangerously low blood sugar. Similarly, other diabetes drugs like sulfonylureas or GLP-1 receptor agonists may amplify Saxenda’s effects, requiring close monitoring and potential dosage adjustments.

Medications Affecting the Gastrointestinal Tract

Saxenda works by slowing gastric emptying, which can alter how the body absorbs other medications. This interaction can be particularly problematic for drugs that require rapid absorption, such as certain antibiotics or pain relievers.

Additionally, medications used to treat gastrointestinal conditions, such as antacids or laxatives, may counteract Saxenda’s mechanism, potentially diminishing its effectiveness or causing gastrointestinal discomfort.

Advice for Patients

To minimize the risk of interactions, inform your healthcare provider about all medications, supplements, and over-the-counter products you’re taking. Include herbal remedies, vitamins, and non-prescription drugs in your disclosure, as some can interact unexpectedly with Saxenda. Your doctor may recommend adjusting dosages or changing medications to ensure compatibility.

By openly discussing your medication regimen, you can reduce the risk of adverse interactions and maximize the usefulness of Saxenda as part of your weight-loss plan.

Monitoring and Adjusting Dosage

When starting Saxenda, it’s essential to follow a gradual dosage escalation plan to minimize side effects and allow your body to adapt. Healthcare providers typically prescribe an initial dose of 0.6 mg per day, increasing it weekly by 0.6 mg until the full maintenance dose of 3.0 mg is reached. This step-by-step approach helps reduce the likelihood of nausea, vomiting, or other gastrointestinal side effects. Never take double or extra doses of Saxenda.

Regular check-ins with your healthcare provider are critical throughout your treatment. These appointments allow your doctor to monitor your progress, evaluate your body’s response to the medication, and address any side effects. They may also adjust your dosage or recommend stopping treatment if Saxenda isn’t producing the desired results or is causing significant adverse effects.

Self-monitoring is equally important. Keep track of your weight loss, appetite changes, and any side effects you experience. Communicating this information to your doctor helps them tailor your treatment plan to your needs.

Adjusting the dosage gradually and maintaining open communication with your healthcare provider ensures Saxenda is used safely and effectively as part of your weight-loss journey. These measures help optimize results while minimizing the risk of complications.

How to Decide if Saxenda Is Right for You

Deciding whether Saxenda is the right weight-loss medication for you involves knowing your Weight Loss Drug Type (quiz here) and carefully weighing its benefits against potential risks.

While Saxenda has been shown to support weight management in certain individuals who struggle with obesity or weight-related health conditions, it may not be suitable for everyone. Understanding the medication’s side effects, risks, and suitability for your health needs is crucial to making an informed decision.

Before starting Saxenda, take the Weight Loss Drug Type Quiz and consider discussing the following questions with your healthcare provider:

  • Am I a good candidate for Saxenda based on my medical history and weight-loss goals?
  • What are the potential side effects and risks specific to my health condition?
  • How will Saxenda interact with any medications or supplements I am currently taking?
  • What are the signs that Saxenda may not be working or causing adverse effects?

It’s also important to remember that Saxenda works best when combined with lifestyle changes. A reduced-calorie diet and regular physical activity are key components of its effectiveness. Relying solely on the medication without addressing underlying habits may limit its long-term success.

Saxenda can be a supportive tool for weight management, but it requires a personalized approach that balances its advantages with any potential concerns. Open communication with your healthcare provider ensures you can make the best decision for your overall health and weight-loss journey.

Frequently Asked Questions (FAQs)

1. What are the most common side effects?

The most common side effects of Saxenda include nausea, vomiting, diarrhea, constipation, and fatigue. These symptoms are typically mild and often improve as your body adjusts to the medication.

Eating smaller meals and staying hydrated can help manage these effects.

2. Can Saxenda cause long-term health issues?

While rare, Saxenda may increase the risk of serious health problems such as thyroid tumors, pancreatitis, or gallbladder issues. These risks are typically minimal for most patients but should be discussed with your healthcare provider.

Regular checkups can help monitor for potential long-term complications.

3. How do I know if I’m experiencing a serious side effect?

Signs of serious side effects include severe abdominal pain (possible pancreatitis), swelling or difficulty breathing (allergic reaction), or a lump in the neck (thyroid tumor).

Contact your doctor immediately if you experience these symptoms or if side effects significantly worsen.

4. Is it safe to take Saxenda with other medications?

Saxenda can interact with certain medications, such as insulin or drugs affecting the gastrointestinal tract.

Inform your healthcare provider of all medications and supplements you’re taking to minimize potential interactions and ensure safe use.

5. What should I do if I miss a dose?

If you miss a dose of Saxenda, take it as soon as you remember unless your next scheduled dose is due.

In that case, skip the missed dose and resume your regular schedule. Do not take an extra dose to make up for the missed one.

Conclusion

Understanding the potential side effects and safety considerations of Saxenda is crucial for anyone considering this medication for weight management.

While Saxenda offers significant benefits for certain individuals struggling with obesity or weight-related conditions, its use comes with risks that must be carefully evaluated. Being informed about both common and serious side effects empowers you to use this medication responsibly and recognize when medical attention may be necessary.

Knowing your Weight Loss Drug Type (quiz here) and consulting a healthcare provider is essential before starting Saxenda. Your doctor can assess your medical history, evaluate potential risks, and determine whether this medication aligns with your weight-loss goals. Open communication about your health, medications, and lifestyle will ensure that you receive a treatment plan tailored to your needs.

Saxenda works best when used as part of a comprehensive weight-loss strategy, including a healthy diet, regular physical activity, and sustained lifestyle changes.

Combining these efforts with Saxenda’s potential appetite-regulating effects can improve your chances of achieving long-term success. With proper guidance and a commitment to overall wellness, Saxenda can be a valuable tool in your weight-loss journey.