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Choosing Weight Loss Medications: What You Need to Know

By Sleep Health Energy Team · · Updated

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Struggling with weight loss can feel like an uphill battle. Frustration and disappointment often overshadow progress.

You’re not alone.

Many of us have tried countless diets and exercise routines, only to see minimal results. Sometimes, despite our best efforts, it feels like we’re fighting a losing war.

Prescription weight management medications can help some people. They work best alongside diet and activity changes, and they aren’t right for everyone.

Understanding Weight Loss Medications

Weight loss medications, also known as anti-obesity drugs, are pharmacological agents prescribed to help individuals lose weight. They’re used along with a reduced-calorie diet and more physical activity, usually when lifestyle changes alone haven’t been enough.

These medications work through various mechanisms to aid in weight reduction, primarily by influencing appetite, metabolism, and fat absorption.

Weight loss medications fall into a few broad groups.

Appetite suppressants, such as phentermine, act on brain chemicals to decrease hunger.

Fat absorption inhibitors, such as orlistat, block some of the fat you eat from being absorbed.

Hormone-based drugs, such as semaglutide and tirzepatide, mimic gut hormones that regulate appetite and blood sugar. They reduce hunger and help you feel full sooner.

It is essential to use weight loss medications under the supervision of a healthcare professional.

For adults, these drugs are typically prescribed for a body mass index (BMI) of 30 or higher, or 27 or higher with a weight-related condition such as type 2 diabetes, high blood pressure, or high cholesterol.

Medical supervision ensures that the medication is effective and safe, and helps manage any potential side effects, thus ensuring the best outcome for the patient’s health.

Tirzepatide

Tirzepatide (Zepbound for weight management, Mounjaro for type 2 diabetes) activates receptors for two gut hormones, GIP and GLP-1. These hormones help regulate appetite and blood sugar.

Clinical studies have demonstrated its effectiveness. In the SURMOUNT-1 trial, adults with obesity lost substantially more weight on tirzepatide than on placebo over 72 weeks.

A licensed clinician can help you decide whether and when to get Tirzepatide for weight loss, based on your health history.

The FDA warns that unapproved and some compounded versions of these drugs haven’t been reviewed for safety, effectiveness, or quality. Fill prescriptions at a state-licensed pharmacy.

Semaglutide

Semaglutide is a GLP-1 receptor agonist. It is sold as Ozempic for type 2 diabetes and as Wegovy for chronic weight management, and it has been found to significantly reduce body weight in obese individuals.

Administered as a weekly injection, it helps decrease appetite and increase feelings of fullness, leading to lower calorie intake and weight loss​.

Metformin

Metformin, commonly used to treat type 2 diabetes, has also been explored for its weight loss benefits.

Although not officially approved for weight loss, it has been used off-label for this purpose.

Metformin improves insulin sensitivity and can lead to modest weight loss in some people. Its effect on weight is much smaller than that of the newer approved drugs.

Orlistat

Orlistat works differently from other weight loss medications by inhibiting the absorption of dietary fats.

It prevents the action of enzymes that break down fat in the intestines, resulting in the excretion of undigested fat. This mechanism helps reduce calorie intake from fats and aids in weight loss.

Orlistat is available by prescription (Xenical) and in a lower-dose over-the-counter form (Alli). Common side effects include oily stools and gas, especially after high-fat meals.

Phentermine

Phentermine is a well-known appetite suppressant that affects the central nervous system to help reduce hunger. On its own, phentermine is FDA-approved only for short-term use, a few weeks. A combination with topiramate (Qsymia) is approved for long-term use.

It can raise heart rate and blood pressure, so it isn’t suitable for people with heart disease, and it needs medical supervision.

Important Considerations

Choosing the right weight loss medication involves more than just picking a pill off the shelf. It requires careful consideration and professional guidance to ensure that the chosen treatment aligns with your specific health needs and goals.

Medical Consultation

These medications are not suitable for everyone and require a prescription, ensuring that they are used safely and effectively.

A healthcare provider can evaluate your overall health, medical history, and specific weight loss goals to determine the most appropriate treatment.

For instance, if you want to get Zepbound for weight loss, an FDA-approved drug for chronic weight management, you must talk to a licensed doctor in your state and ask for a prescription. Such a consultation is also an opportunity to clarify any concerns and set a realistic expectation.

Lifestyle Changes

Weight loss medications should be seen as part of a comprehensive weight management plan that includes diet and exercise.

While these medications can help reduce appetite or increase feelings of fullness, making healthy lifestyle changes is critical for long-term success.

Incorporating a balanced diet, regular physical activity, and behavioral modifications can enhance the effectiveness of weight loss medications.

Potential Risks and Side Effects

Common side effects can include gastrointestinal issues, such as nausea, vomiting, diarrhea, and constipation. Some drugs carry more serious risks, such as increased heart rate or blood pressure, gallbladder problems, or pancreatitis.

Tirzepatide and semaglutide also shouldn’t be used by people with a personal or family history of medullary thyroid cancer or MEN 2, because they caused thyroid tumors in rats.

Understanding these risks and working with a healthcare provider to manage them is essential. Some medications may also interact with other treatments you are taking. Comprehensive medical oversight is necessary to ensure safe use.

Wrapping Up

Choosing a weight loss medication is a personal decision that requires professional guidance.

By working closely with your healthcare provider, you can find the best option tailored to your needs, ensuring both safety and effectiveness.

Remember, weight loss medications are most successful when combined with healthy lifestyle changes and regular medical oversight. Ask your doctor about the benefits, risks, costs, and what happens if you stop the medication.

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