What happens if you take too much GLP-1?

Severe nausea, persistent vomiting, diarrhea, dehydration, hypoglycemia, pancreatitis, kidney injury. Symptoms within 1-12 hours. Seek immediate medical attention.

What to do for double dose?

Do not take more, monitor for severe symptoms, stay hydrated, contact provider or poison control (1-800-222-1222), go to ER if severe.

Symptoms of overdose?

Severe persistent nausea, repeated vomiting, severe diarrhea, dehydration, severe abdominal pain, rapid heartbeat, confusion, fainting, low blood sugar.

Rarely fatal in adults but serious. Risks: dehydration, pancreatitis, kidney injury. Fatalities more likely with very large doses or other conditions. Always seek emergency care.

Is there an antidote?

No specific antidote. Supportive treatment: IV fluids, anti-nausea meds, blood sugar monitoring, observation for pancreatitis. Hospitalization 1-3 days in severe cases.

What happens if you take too much GLP-1 medication?

GLP-1 overdose can cause severe nausea, persistent vomiting, severe diarrhea, dehydration, hypoglycemia (low blood sugar), pancreatitis, and in severe cases, acute kidney injury. Symptoms typically begin within 1-12 hours of overdose. Seek immediate medical attention if you suspect an overdose.

What should I do if I accidentally take a double dose of GLP-1?

If you accidentally take a double dose: do not take any more medication, monitor for severe symptoms (persistent vomiting, severe abdominal pain, dizziness), stay hydrated with small sips of water, contact your provider or poison control (1-800-222-1222), and go to the ER if symptoms are severe.

What are the symptoms of GLP-1 overdose?

Symptoms include: severe and persistent nausea, repeated vomiting, severe diarrhea, dehydration (dark urine, dizziness, dry mouth), severe abdominal pain (possible pancreatitis), rapid heartbeat, confusion, fainting, and low blood sugar symptoms (shakiness, sweating, extreme hunger).

Can a GLP-1 overdose be fatal?

GLP-1 overdoses are rarely fatal in adults but can be serious. The main risks are severe dehydration, acute pancreatitis, and kidney injury. Fatalities are more likely with very large overdoses or in patients with other health conditions. Always seek emergency care for suspected overdose.

Is there an antidote for GLP-1 overdose?

There is no specific antidote for GLP-1 overdose. Treatment is supportive: IV fluids for dehydration, anti-nausea medication (ondansetron), blood sugar monitoring, and observation for pancreatitis. In severe cases, hospitalization may be required for 1-3 days.

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GLP-1 Overdose: Symptoms, What to Do, and Emergency Care

GLP-1 overdose guide: symptoms of taking too much semaglutide or tirzepatide, what to do, and when to seek emergency care.

August 7, 2026Healthy-Weight Editorial8 min read

Medically reviewed by Dr. Sarah Chen, MD

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If you suspect a GLP-1 overdose, call 911 or go to the nearest emergency room immediately. You can also call Poison Control at 1-800-222-1222.

Symptoms of GLP-1 overdose

Symptom	Severity	Onset
Severe persistent nausea	Moderate-Severe	1-6 hours
Repeated vomiting	Severe	2-8 hours
Severe diarrhea	Moderate-Severe	4-12 hours
Dehydration	Severe	6-24 hours
Severe abdominal pain	Severe (possible pancreatitis)	6-24 hours
Hypoglycemia (low blood sugar)	Moderate-Severe	1-6 hours
Rapid heartbeat	Moderate	2-12 hours
Confusion or fainting	Severe	6-24 hours

What to do immediately

Do not take any more medication
Call Poison Control: 1-800-222-1222 (US)
Stay hydrated: Sip small amounts of water or electrolyte solution
Monitor symptoms: Watch for severe vomiting, abdominal pain, dizziness
Go to the ER if: You cannot keep fluids down, have severe abdominal pain, feel confused or faint
Bring your medication: Take the pen/vial to the ER so they know exactly what you took
Contact your provider: Inform your prescribing provider as soon as possible

Have questions about your GLP-1 dosing?

A US-licensed provider can help you understand your medication schedule and prevent dosing errors.

Talk to a provider

How overdose is treated in the ER

IV fluids: To treat dehydration from vomiting and diarrhea
Anti-nausea medication: Ondansetron (Zofran) IV to control vomiting
Blood sugar monitoring: Regular glucose checks, dextrose IV if hypoglycemic
Pancreatitis evaluation: Blood tests (lipase, amylase) and possibly CT scan
Kidney function monitoring: Blood tests for creatinine and BUN
Observation: Typically 6-24 hours; longer if complications
Cardiac monitoring: ECG to check for arrhythmias

How to prevent GLP-1 overdose

Use a weekly pill organizer or alarm to track injections
Never take two doses to make up for a missed one (see our missed dose guide)
Store medication in its original labeled container
Keep a medication log or use a tracking app
Do not share pens with others
Check the dose on the pen before each injection
Keep medication away from children
Review your dosing schedule at every provider visit

Related guides

Medical disclaimer: If you suspect a medication overdose, call 911 or Poison Control (1-800-222-1222) immediately. This content is for informational purposes only and is not a substitute for emergency medical care.

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