The best weight loss medication for you

Every approved option at a glance

The best weight-loss medication is the one that fits your health, goals and budget. By average loss in trials, GLP-1 medicines lead, with Zepbound at the top.

Separate trials, different people and lengths. Use this as a map, not a scoreboard.

Who these medicines are for

Most weight-management labels use the same starting point: a BMI of 30 or higher, or 27 or higher with at least one weight-related condition such as high blood pressure, type 2 diabetes or high cholesterol. See where you stand with the BMI calculator and the guide on who qualifies.

BMI is a screening number, not a verdict on your health. Your clinician will also look at your waist, blood pressure, blood sugar, sleep and how weight affects your daily life. A few medicines, including Wegovy and Saxenda, are also approved for some teens 12 and older, using growth charts instead of adult BMI cutoffs.

Common mistakes to avoid

• Chasing the biggest number only. A medicine you can't tolerate or afford won't help for long.
• Expecting results in the first weeks. GLP-1 doses step up over months, and the trial averages came after a year or more.
• Eating too little. Some people barely feel hungry on a GLP-1. Skipping meals can leave you short on protein, fluids and energy.
• Stopping suddenly. Stopping on your own, or because a refill ran out, often means weight comes back. Plan next steps with your prescriber: see stopping a GLP-1.
• Buying from unapproved sellers. The FDA has warned about counterfeit and unapproved products sold online.

How to pick the right one

• Your health history. Heart disease, sleep apnea and diabetes can point to specific brands. A history of seizures, glaucoma or eating disorders rules some out.
• Your goals. Larger expected loss usually points to a GLP-1.
• Your routine. Weekly shot, daily shot or daily pill.
• Coverage. Your plan's formulary often decides the first choice. See the cost index and prior authorization guide.

A worked example at 230 lb

Percentages can feel abstract. Here's what each trial average would mean for someone who starts at 230 lb:

These are averages over about a year or more, not promises. Your own result could be higher or lower. Run your own numbers with the weight-loss projection.

What the research says

• Strong evidence: large randomized trials of 1 to 1.5 years show GLP-1 medicines lead to more weight loss than placebo. For semaglutide, the SELECT trial of 17,604 adults with heart disease also found about 20% fewer heart attacks, strokes and heart deaths.
• Moderate evidence: the older pills were tested in trials where many people dropped out, so their averages are less certain.
• Still limited: results beyond a few years, and what happens over the long run after stopping. Studies so far show much of the weight tends to return after stopping.

Medicine works best with habits

In every trial above, people also got diet and activity advice, and the placebo groups still lost a little. Habits help any medicine do its job.

• Protein helps protect muscle while you lose: find your protein floor.
• Strength training 2 or 3 times a week keeps muscles working.
• Enough food. Appetite can drop a lot on GLP-1s. Very low intakes, below about 1,200 calories a day for women or 1,500 for men, need medical supervision. Check your needs with the TDEE calculator.
• Sleep of 7 hours or more helps steady hunger signals.

When to talk to your doctor

• Before starting any weight-loss medicine.
• If you take medicines for diabetes, blood pressure, mood or seizures.
• If you're pregnant, breastfeeding or planning pregnancy.
• If side effects stop you eating or drinking normally.