Weight Loss Medications · Tool Face-Off

Ozempic vs Mounjaro

Quick answer

Both are GLP-1 injectable medications that crush appetite and blood sugar, but Mounjaro's dual-action mechanism edges it out for raw weight loss results — while Ozempic holds the longer track record and broader insurance coverage.

Ozempic

The OG GLP-1 shot that started the weight-loss craze

3.9★

Our pick

Mounjaro

The dual-hormone newcomer stealing Ozempic's thunder

4★

Active Ingredient

Semaglutide

Tirzepatide

Mechanism

GLP-1 receptor agonist

GLP-1 + GIP dual agonist

Avg. Weight Loss (trials)

~15% body weight

~20-22% body weight

FDA Approved for Weight Loss

No (Wegovy is; Ozempic = diabetes)

No (Zepbound is; Mounjaro = diabetes)

Dosing Frequency

Once weekly injection

Starting Dose

0.25 mg/week

2.5 mg/week

Max Dose

2 mg/week

15 mg/week

List Price (monthly, no insurance)

~$900-1,000

~$1,000-1,100

Years on Market

Since 2021

Since 2022

Insurance Coverage (T2D)

Broad — most major plans

Growing but patchier

Common Side Effects

Nausea, vomiting, diarrhea

Manufacturer Savings Card

Novo Nordisk (~$25/mo eligible patients)

Eli Lilly (~$25/mo eligible patients)

Ozempic

Clinical Evidence★★★★½

Dosing Convenience★★★★½

Insurance Coverage★★★★☆

FDA Approval Status★★★★☆

Side Effect Profile★★★½☆

Weight Loss Efficacy★★★★☆

Cost Without Insurance★★★☆☆

Mounjaro

Clinical Evidence★★★★½

Dosing Convenience★★★★½

Insurance Coverage★★★☆☆

FDA Approval Status★★★★☆

Side Effect Profile★★★½☆

Weight Loss Efficacy★★★★★

Cost Without Insurance★★★☆☆

Worth knowing

Mounjaro users in SURMOUNT trials lost up to 22.5% of body weight — roughly 52 lbs on average.
Ozempic was originally approved for Type 2 diabetes, not weight loss; its weight-loss twin Wegovy uses the same drug at higher doses.
Both drugs carry an FDA boxed warning about thyroid C-cell tumors observed in rodents — though human risk is unconfirmed.
Shortages of both drugs have been widespread since 2022, making pharmacy availability a real-world factor.
Compounded versions of both circulate online — the FDA has flagged safety concerns about unregulated compounders.

Ozempic became so culturally dominant that 'Ozempic face' — the gaunt look from rapid weight loss — entered the beauty industry's vocabulary before most doctors had even prescribed it.

If you want

You want maximum weight loss results

Mounjaro's dual GLP-1 + GIP action produces ~5-7% more body weight loss on average in head-to-head data.

→ Pick Mounjaro

If you want

You rely on insurance coverage

Ozempic has broader established coverage for Type 2 diabetes patients across most major US insurance plans.

→ Pick Ozempic

If you want

You're new to GLP-1 medications

Ozempic's longer market history means more prescriber familiarity, clearer long-term data, and easier troubleshooting.

→ Pick Ozempic