Best GLP-1 Medications for Weight Loss
A comprehensive comparison of every GLP-1 option available in 2026
Zepbound (tirzepatide)
Dual GIP/GLP-1 mechanism produced the highest weight loss in any FDA-approved medication trial.
Advantages
- Highest weight loss in clinical trials
- Dual-hormone mechanism
- Lower nausea than semaglutide
Considerations
- Limited insurance coverage for weight loss
- Newer, less long-term data
- No oral form
Wegovy (semaglutide 2.4 mg)
Proven cardiovascular benefit (SELECT trial). Broadest insurance coverage among weight loss GLP-1s.
Advantages
- Proven heart health benefits
- Broadest insurance coverage
- Extensive safety data
Considerations
- Less weight loss than Zepbound
- Higher list price
- GI side effects common during titration
Mounjaro (tirzepatide)
Same drug as Zepbound. Better insurance coverage when prescribed for diabetes.
Advantages
- Same efficacy as Zepbound
- Better diabetes insurance coverage
- 6 dose levels
Considerations
- Not FDA-approved for weight loss
- Off-label use may not be covered
- Newer drug
Ozempic (semaglutide 2 mg)
Most widely prescribed GLP-1 in the US. Strong insurance coverage for diabetes.
Advantages
- 7+ year safety record
- Strongest insurance coverage
- Manufacturer savings available
Considerations
- Lower max dose than Wegovy
- Not FDA-approved for weight loss
- Less effective than tirzepatide
Saxenda (liraglutide)
First FDA-approved GLP-1 for weight loss. Daily injection (not weekly).
Advantages
- Longest safety track record
- FDA-approved for weight loss
- Approved for teens 12+
Considerations
- Daily injection required
- Less effective than newer options
- Higher cost relative to efficacy
Compounded Semaglutide
Significantly cheaper but quality depends entirely on the pharmacy. FDA has increased enforcement in 2026.
Advantages
- Much lower cost
- No insurance needed
- Widely available via telehealth
Considerations
- Not FDA-approved
- Quality varies by pharmacy
- FDA enforcement increasing
- No standardized trials
The Bottom Line
For weight loss, Zepbound (tirzepatide) beat standard-dose Wegovy in the only head-to-head trial, SURMOUNT-5. The higher-dose Wegovy HD has never been tested against Zepbound. Counting everyone who started, Wegovy HD averaged 18.7% over 72 weeks in STEP UP and Zepbound 15 mg averaged 20.9% over 72 weeks in SURMOUNT-1; separate trials like these cannot show which drug works better. For the best-established option with cardiovascular benefits, Wegovy (semaglutide) is the standard. If cost is the primary concern, compare what your plan covers with the cash prices the drug makers charge when they sell direct. Always work with your healthcare provider to choose the right medication for your specific situation.
Frequently Asked Questions
Wegovy HD (semaglutide 7.2 mg) and Zepbound (tirzepatide 15 mg) have never been tested against each other. Counting everyone who started, Wegovy HD averaged 18.7% over 72 weeks in STEP UP and Zepbound averaged 20.9% over 72 weeks in SURMOUNT-1. Assuming everyone kept taking the drug, the estimates are 20.7% and 22.5%. These come from separate trials with different people, so they cannot show which drug works better. Standard-dose Wegovy (2.4 mg) lost to Zepbound in the head-to-head SURMOUNT-5 trial and to the 7.2 mg dose within STEP UP. Two things to watch when you compare: drug makers do not always headline the same measure, and figures from separate trials are not a head-to-head result.
Compounded semaglutide is not FDA-approved, and since the shortage ended compounding pharmacies generally may not make copies of it, with narrow exceptions. For FDA-approved medicines, the manufacturers sell some doses directly to cash-paying patients for well under list price, and insurance plus a manufacturer savings card can bring the cost to as little as $25 a month for eligible patients.
Source: FDA compounding policy statement, updated April 1, 2026
Yes, all GLP-1 medications, including compounded versions, require a prescription from a licensed healthcare provider. This can be obtained through in-person visits or telehealth consultations.
Clinical trials have studied use up to 2+ years with continued benefit. Most providers recommend long-term use for sustained weight management, as weight regain is common after stopping. Your doctor will monitor your progress and adjust treatment as needed.
More Comparisons
Zepbound vs Wegovy
The only two drugs FDA approved for weight loss, compared head to head
Read comparisonSemaglutide vs Tirzepatide
The two leading GLP-1 medications compared head to head
Read comparisonMounjaro vs Ozempic
Comparing the two most-prescribed GLP-1 brand names
Read comparisonOzempic vs Wegovy
Same active ingredient, different FDA approvals and dosing
Read comparisonReady to start treatment?
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Medical Disclaimer: This guide is for informational purposes only and is not medical advice. All clinical data is sourced from FDA prescribing information and published peer-reviewed trials. Individual results vary. Always consult a qualified healthcare provider before starting, stopping, or switching any medication.