Weight Loss Pills Adverse Effects

Alli (Orlistat)

  • Common Side Effects: Because it blocks fat absorption, it can lead to gastrointestinal issues like oily spotting, gas with discharge, frequent bowel movements, and an inability to control them, especially after meals high in fat.

  • Rare but Serious: Liver injury and kidney stones have been reported in a few cases.

Adipex-P (Phenteremine)

  • Common Side Effects: The most frequently experienced side effects of Phentermine include dry mouth, insomnia, increased heart rate, a feeling of nervousness or anxiety, and constipation. Some people might also experience dizziness or headaches.

  • Rare but Serious: Though less common, Phentermine can lead to more serious side effects such as high blood pressure, heart palpitations, chest pain, shortness of breath, and swelling in the feet or legs. Very rarely, it can cause mood changes like agitation or uncontrolled anger, hallucinations, or abnormal behaviors. Another serious condition, though rare, is the development of pulmonary hypertension, a type of high blood pressure that affects the arteries in the lungs and the right side of the heart.

Qsymia (Phentermine-Topiramate)

  • Common Side Effects: Dry mouth, constipation, tingling in hands/feet, dizziness, and altered taste sensation.

  • Rare but Serious: Increases in heart rate, birth defects if taken during pregnancy, and vision problems like glaucoma.

Saxenda (Liraglutide)

  • Common Side Effects: Nausea, vomiting, diarrhea, constipation, and risk of low blood sugar in people with diabetes.

  • Rare but Serious: Pancreatitis, gallbladder disease, and risk of thyroid cancer.

Contrave (Bupropion-Naltrexone)

  • Common Side Effects: Nausea, constipation, headache, vomiting, dizziness, trouble sleeping, dry mouth, and diarrhea.

  • Rare but Serious: Suicidal thoughts or actions, seizures, and elevated blood pressure.

Wegovy/Ozempic (Semaglutide)

  • Common Side Effects: Nausea, vomiting, diarrhea, stomach pain, and constipation.

  • Rare but Serious: Pancreatitis, gallbladder problems, kidney injury, and possible increased risk of certain thyroid cancers.

Mounjaro (Tirzepatide)

  • Common Side Effects: Similar to GLP-1 agonists like semaglutide—nausea, diarrhea, reduced appetite, vomiting, constipation, and abdominal pain.

  • Rare but Serious: Risk of thyroid tumors, pancreatitis, and kidney problems.

It's crucial to note that while these side effects can sound alarming, the decision to use any medication should involve a comprehensive discussion with a healthcare provider. They will weigh the potential benefits against the risks, considering your individual health status and weight loss goals. Always report any adverse effects to your healthcare provider, as they may need to adjust your treatment plan or provide remedies to alleviate side effects. Remember, these medications are often part of a broader approach to weight loss, including diet, exercise, and behavioral changes, to achieve the best health outcomes.