Can you drink alcohol on Wegovy?

No hard contraindication, but alcohol tolerance often drops sharply on GLP-1. Many patients also report reduced desire for alcohol — likely a secondary effect of GLP-1 on the brain reward system.

Does GLP-1 affect oral birth control?

Tirzepatide (Mounjaro, Zepbound) has documented reduced absorption of oral contraceptives during the first 4 weeks of each dose increase. Use backup contraception for ~4 weeks after starting + after each step-up. Semaglutide has no documented effect.

Can I take GLP-1 while pregnant?

No. All FDA-approved GLP-1s carry a pregnancy contraindication. Stop GLP-1 at least 2 months before planned conception due to its long half-life.

Is it safe to take GLP-1 long-term?

Liraglutide has 15+ years of post-marketing data (Victoza approved 2010). Semaglutide has 8+ years (Ozempic approved 2017). No new class-wide safety signals have emerged in extended follow-up. Chronic use is the FDA-approved indication for both T2D and obesity.

Do I need to exercise on Wegovy?

Yes — resistance training specifically. Without it, 25-40% of weight lost on GLP-1 comes from lean muscle. Cardio is a bonus; resistance is the non-negotiable.

Medication comparison

Mounjaro vs Wegovy

Mounjaro and Wegovy are both prescription medications (GIP/GLP-1 dual receptor agonist vs GLP-1 receptor agonist) used for Type 2 diabetes and Chronic weight management. The table below compares FDA-approved indications, dosing, weight-loss outcomes, side effects, contraindications, and current pricing — all sourced from the manufacturer prescribing information.

This is general drug information, not medical advice. Talk to a licensed clinician before starting, stopping, or switching medication.

Drug A

Mounjaro

tirzepatide

GIP/GLP-1 dual receptor agonist

Eli Lilly

See full overview

Drug B

Wegovy

semaglutide

GLP-1 receptor agonist

Novo Nordisk

See full overview

Property	Mounjaro	Wegovy
Generic name	tirzepatide	semaglutide
Drug class	GIP/GLP-1 dual receptor agonist	GLP-1 receptor agonist
Manufacturer	Eli Lilly	Novo Nordisk
Approved indications	Type 2 diabetes	Chronic weight management
Brand names	Mounjaro	Wegovy
Typical dosing	Titrate to 15 mg (weekly SC injection)	Titrate to 2.4 mg (weekly SC injection)
Top side effects	Nausea (29.6%), Diarrhea (23%), Vomiting (12.6%)	Nausea (44.2%), Diarrhea (31.5%), Vomiting (24.8%)
Contraindications	—	—
Boxed warning	Yes	Yes
Pregnancy	C — Discontinue at least 1 month before a planned pregnancy.	C — Discontinue at least 2 months before a planned pregnancy.
Storage	Refrigerate before first use. After first use, room temperature up to 21 days.	Refrigerate before first use. After first use, room temperature up to 28 days.
Avg monthly cost	$1023.04	$1349.02

FDA boxed warning

Mounjaro: Risk of thyroid C-cell tumors. Contraindicated in patients with personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2).

Wegovy: Risk of thyroid C-cell tumors. Contraindicated in patients with personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2).

Already on Mounjaro and considering Wegovy?

Tirzepatide → semaglutide for weight loss specifically — insurance or formulary driven.

Read the switching guide

Frequently asked

What is the difference between Mounjaro and Wegovy?

Mounjaro is tirzepatide (GIP/GLP-1 dual receptor agonist) and Wegovy is semaglutide (GLP-1 receptor agonist). They have different active ingredients and slightly different side-effect profiles.

Is Mounjaro or Wegovy more effective for weight loss?

Head-to-head trial data favors tirzepatide-based medications (Mounjaro, Zepbound) over semaglutide-based medications (Ozempic, Wegovy) in average percent weight loss. See each drug's clinical-trials section for SURMOUNT and STEP trial data.

Can I switch between Mounjaro and Wegovy?

Yes — see our directional switching guide at /switching/mounjaro-to-wegovy for FDA-label dose conversion and what to expect during the transition.

More medication context

Tools and guides that pair with this comparison.

Common questions readers ask

Can you drink alcohol on Wegovy?: No hard contraindication, but alcohol tolerance often drops sharply on GLP-1. Many patients also report reduced desire for alcohol — likely a secondary effect of GLP-1 on the brain reward system.
Does GLP-1 affect oral birth control?: Tirzepatide (Mounjaro, Zepbound) has documented reduced absorption of oral contraceptives during the first 4 weeks of each dose increase. Use backup contraception for ~4 weeks after starting + after each step-up. Semaglutide has no documented effect.
Can I take GLP-1 while pregnant?: No. All FDA-approved GLP-1s carry a pregnancy contraindication. Stop GLP-1 at least 2 months before planned conception due to its long half-life.
Is it safe to take GLP-1 long-term?: Liraglutide has 15+ years of post-marketing data (Victoza approved 2010). Semaglutide has 8+ years (Ozempic approved 2017). No new class-wide safety signals have emerged in extended follow-up. Chronic use is the FDA-approved indication for both T2D and obesity.
Do I need to exercise on Wegovy?: Yes — resistance training specifically. Without it, 25-40% of weight lost on GLP-1 comes from lean muscle. Cardio is a bonus; resistance is the non-negotiable.

Affiliate disclosure: we earn commissions when readers sign up through our links. Editorial ranking is independent.

Mounjaro vs Wegovy

This is general drug information, not medical advice. Talk to a licensed clinician before starting, stopping, or switching medication.

Property	Mounjaro	Wegovy
Generic name	tirzepatide	semaglutide
Drug class	GIP/GLP-1 dual receptor agonist	GLP-1 receptor agonist
Manufacturer	Eli Lilly	Novo Nordisk
Approved indications	Type 2 diabetes	Chronic weight management
Brand names	Mounjaro	Wegovy
Typical dosing	Titrate to 15 mg (weekly SC injection)	Titrate to 2.4 mg (weekly SC injection)
Top side effects	Nausea (29.6%), Diarrhea (23%), Vomiting (12.6%)	Nausea (44.2%), Diarrhea (31.5%), Vomiting (24.8%)
Contraindications	—	—
Boxed warning	Yes	Yes
Pregnancy	C — Discontinue at least 1 month before a planned pregnancy.	C — Discontinue at least 2 months before a planned pregnancy.
Storage	Refrigerate before first use. After first use, room temperature up to 21 days.	Refrigerate before first use. After first use, room temperature up to 28 days.
Avg monthly cost	$1023.04	$1349.02

FDA boxed warning

Mounjaro: Risk of thyroid C-cell tumors. Contraindicated in patients with personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2).

Wegovy: Risk of thyroid C-cell tumors. Contraindicated in patients with personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2).

Already on Mounjaro and considering Wegovy?

Tirzepatide → semaglutide for weight loss specifically — insurance or formulary driven.

Read the switching guide

Frequently asked

What is the difference between Mounjaro and Wegovy?

Mounjaro is tirzepatide (GIP/GLP-1 dual receptor agonist) and Wegovy is semaglutide (GLP-1 receptor agonist). They have different active ingredients and slightly different side-effect profiles.

Is Mounjaro or Wegovy more effective for weight loss?

Can I switch between Mounjaro and Wegovy?

Yes — see our directional switching guide at /switching/mounjaro-to-wegovy for FDA-label dose conversion and what to expect during the transition.

Common questions readers ask

Can you drink alcohol on Wegovy?: No hard contraindication, but alcohol tolerance often drops sharply on GLP-1. Many patients also report reduced desire for alcohol — likely a secondary effect of GLP-1 on the brain reward system.
Does GLP-1 affect oral birth control?: Tirzepatide (Mounjaro, Zepbound) has documented reduced absorption of oral contraceptives during the first 4 weeks of each dose increase. Use backup contraception for ~4 weeks after starting + after each step-up. Semaglutide has no documented effect.
Can I take GLP-1 while pregnant?: No. All FDA-approved GLP-1s carry a pregnancy contraindication. Stop GLP-1 at least 2 months before planned conception due to its long half-life.
Is it safe to take GLP-1 long-term?: Liraglutide has 15+ years of post-marketing data (Victoza approved 2010). Semaglutide has 8+ years (Ozempic approved 2017). No new class-wide safety signals have emerged in extended follow-up. Chronic use is the FDA-approved indication for both T2D and obesity.
Do I need to exercise on Wegovy?: Yes — resistance training specifically. Without it, 25-40% of weight lost on GLP-1 comes from lean muscle. Cardio is a bonus; resistance is the non-negotiable.

Affiliate disclosure: we earn commissions when readers sign up through our links. Editorial ranking is independent.

Mounjaro vs Wegovy

Mounjaro

Wegovy

Frequently asked

More medication context

Mounjaro full overview

Wegovy full overview

GLP-1 shortage tracker

Are you a candidate?

Prior auth letter generator

12-month price trends

Common questions readers ask

Mounjaro vs Wegovy

Mounjaro

Wegovy

Frequently asked

More medication context

Mounjaro full overview

Wegovy full overview

GLP-1 shortage tracker

Are you a candidate?

Prior auth letter generator

12-month price trends

Common questions readers ask