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Semaglutide Vs. Wegovy®: Drug Comparison

Compare common side effects, interactions, warnings, and more.

Medical Review byMike Bohl, MD, MBA, MPH, MS, ALMNov 4, 2024

Medication Name

Semaglutide

*image for illustrative purpose only

Semaglutide

*image for illustrative purpose only

Summary

Prescription only

Semaglutide is the active ingredient in the brand-name medication Wegovy®. The information below is about brand name Wegovy®.

Wegovy® (semaglutide) is an injectable medication approved for chronic weight management in adults with obesity or overweight with at least one weight-related condition, such as hypertension, type 2 diabetes, or high cholesterol. It works by mimicking the hormone glucagon-like peptide-1 (GLP-1), which regulates appetite and food intake, leading to reduced calorie consumption and significant weight loss. Wegovy® is administered once weekly and is intended to be used in conjunction with a reduced-calorie diet and increased physical activity. Common side effects include nausea, diarrhea, vomiting, and constipation. It should be used with caution in patients with a history of pancreatitis and is not recommended for use in pregnant or breastfeeding individuals​.

Prescription only

Wegovy® (semaglutide) is an injectable medication approved for chronic weight management in adults with obesity or overweight with at least one weight-related condition, such as hypertension, type 2 diabetes, or high cholesterol. It works by mimicking the hormone glucagon-like peptide-1 (GLP-1), which regulates appetite and food intake, leading to reduced calorie consumption and significant weight loss. Wegovy® is administered once weekly and is intended to be used in conjunction with a reduced-calorie diet and increased physical activity. Common side effects include nausea, diarrhea, vomiting, and constipation. It should be used with caution in patients with a history of pancreatitis and is not recommended for use in pregnant or breastfeeding individuals​.

Drug Category

Glucagon-like peptide-1 (GLP-1) receptor agonist

Glucagon-like peptide-1 (GLP-1) receptor agonist

Approved Uses

Wegovy® (semaglutide) is indicated in combination with a reduced calorie diet and increased physical activity:

  • To reduce the risk of major adverse cardiovascular events (cardiovascular death, non-fatal myocardial infarction, or non-fatal stroke) in adults with established cardiovascular disease and either obesity or overweight

  • To reduce excess body weight and maintain weight reduction long term in:

    • Adults and pediatric patients aged 12 years and older with obesity

    • Adults with overweight in the presence of at least one weight-related comorbid condition

Wegovy® (semaglutide) is indicated in combination with a reduced calorie diet and increased physical activity:

  • To reduce the risk of major adverse cardiovascular events (cardiovascular death, non-fatal myocardial infarction, or non-fatal stroke) in adults with established cardiovascular disease and either obesity or overweight

  • To reduce excess body weight and maintain weight reduction long term in:

    • Adults and pediatric patients aged 12 years and older with obesity

    • Adults with overweight in the presence of at least one weight-related comorbid condition

Dosage

  • Typically taken as an injection once weekly

  • Comes in single-dose pens that deliver 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, or 2.4 mg per injection

  • Typically taken as an injection once weekly

  • Comes in single-dose pens that deliver 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, or 2.4 mg per injection

Known Common Side Effects

Most common adverse reactions (incidence ≥5%) in adults or pediatric patients aged 12 years and older are:

  • Nausea

  • Diarrhea

  • Vomiting

  • Constipation

  • Abdominal pain

  • Headache

  • Fatigue

  • Indigestion

  • Dizziness

  • Abdominal distension

  • Belching

  • Low blood sugar in patients with type 2 diabetes

  • Flatulence

  • Inflammation of the digestive system

  • Gastroesophageal reflux disease (heartburn)

  • Inflammation of the nasal cavities and back of the throat

Most common adverse reactions (incidence ≥5%) in adults or pediatric patients aged 12 years and older are:

  • Nausea

  • Diarrhea

  • Vomiting

  • Constipation

  • Abdominal pain

  • Headache

  • Fatigue

  • Indigestion

  • Dizziness

  • Abdominal distension

  • Belching

  • Low blood sugar in patients with type 2 diabetes

  • Flatulence

  • Inflammation of the digestive system

  • Gastroesophageal reflux disease (heartburn)

  • Inflammation of the nasal cavities and back of the throat

Interactions & Contraindications

  • Personal or family history of medullary thyroid carcinoma or in patients with multiple endocrine neoplasia syndrome type 2

  • Known hypersensitivity to semaglutide or any of the excipients in Wegovy®

  • Drug interactions: Wegovy® delays gastric emptying. May impact absorption of concomitantly administered oral medications

  • Personal or family history of medullary thyroid carcinoma or in patients with multiple endocrine neoplasia syndrome type 2

  • Known hypersensitivity to semaglutide or any of the excipients in Wegovy®

  • Drug interactions: Wegovy® delays gastric emptying. May impact absorption of concomitantly administered oral medications

Warnings & Precautions

  • Acute pancreatitis

  • Acute gallbladder disease

  • Low blood sugar: Concomitant use with insulin or an insulin secretagogue may increase the risk of low blood sugar, including severe low blood sugar

  • Acute kidney injury

  • Hypersensitivity reactions

  • Diabetic retinopathy complications in patients with type 2 diabetes

  • Heart rate increase

  • Suicidal behavior and ideation

  • Pregnancy: May cause fetal harm. When pregnancy is recognized, discontinue Wegovy®

  • Females and males of reproductive potential: Discontinue Wegovy® at least 2 months before a planned pregnancy because of the long half-life of semaglutide

  • Acute pancreatitis

  • Acute gallbladder disease

  • Low blood sugar: Concomitant use with insulin or an insulin secretagogue may increase the risk of low blood sugar, including severe low blood sugar

  • Acute kidney injury

  • Hypersensitivity reactions

  • Diabetic retinopathy complications in patients with type 2 diabetes

  • Heart rate increase

  • Suicidal behavior and ideation

  • Pregnancy: May cause fetal harm. When pregnancy is recognized, discontinue Wegovy®

  • Females and males of reproductive potential: Discontinue Wegovy® at least 2 months before a planned pregnancy because of the long half-life of semaglutide

Boxed Warning

WARNING: RISK OF THYROID C-CELL TUMORS

In rodents, semaglutide causes thyroid C-cell tumors at clinically relevant exposures. It is unknown whether Wegovy® causes thyroid C-cell tumors, including medullary thyroid carcinoma (MTC), in humans as the human relevance of semaglutide-induced rodent thyroid C-cell tumors has not been determined.

Wegovy® is contraindicated in patients with a personal or family history of MTC or in patients with multiple endocrine neoplasia syndrome type 2 (MEN 2). Counsel patients regarding the potential risk of MTC and symptoms of thyroid tumors.

WARNING: RISK OF THYROID C-CELL TUMORS

In rodents, semaglutide causes thyroid C-cell tumors at clinically relevant exposures. It is unknown whether Wegovy® causes thyroid C-cell tumors, including medullary thyroid carcinoma (MTC), in humans as the human relevance of semaglutide-induced rodent thyroid C-cell tumors has not been determined.

Wegovy® is contraindicated in patients with a personal or family history of MTC or in patients with multiple endocrine neoplasia syndrome type 2 (MEN 2). Counsel patients regarding the potential risk of MTC and symptoms of thyroid tumors.

References

*This information is from the label for brand name Wegovy®. See the Full Prescribing Information for more complete information. Semaglutide, the active ingredient in Wegovy®, may also be the active ingredient in other medications, and this information may not be accurate for all medications that include the active ingredient semaglutide.

*This information is from the label for brand name Wegovy®. See the Full Prescribing Information for more complete information. Semaglutide, the active ingredient in Wegovy®, may also be the active ingredient in other medications, and this information may not be accurate for all medications that include the active ingredient semaglutide.