Product Description

Brand name: Mounjaro
Generic name: Tirzepatide
Drug class: Dual GIP & GLP-1 receptor agonist
Form: Prefilled injection pen (subcutaneous)
Strength: 2.5 mg / 0.5 mL

What it is

Mounjaro is a once-weekly injectable anti-diabetic medicine used to control blood sugar in patients with type 2 diabetes mellitus.

Mechanism of Action

Mounjaro works by mimicking natural gut hormones:

• Increases insulin secretion (only when sugar is high)
• Reduces glucose production in liver
• Slows gastric emptying
• Suppresses appetite (helps weight reduction)

Unique point: It acts on both GIP + GLP-1 receptors, making it more effective than older GLP-1 drugs.

Role of 2.5 mg Dose

• Starting dose only (initiation dose)
• Taken once weekly for first 4 weeks
• Helps body adjust & reduce side effects
• Usually NOT sufficient for full glucose control

After 4 weeks increased to 5 mg, then gradually higher if needed.

Indications

• Type 2 Diabetes Mellitus
• Often leads to weight loss (secondary benefit)

Not for:

• Type 1 diabetes
• Patients with history of certain thyroid cancers (consult doctor)

Common Side Effects

• Nausea
• Vomiting
• Diarrhea
• Loss of appetite
• Constipation

Serious (rare)

• Pancreatitis
• Gallbladder issues
• Severe hypoglycemia (if used with insulin)

How to Use

• Inject once weekly
• Same day every week
• Can inject in:
  • Abdomen
  • Thigh
  • Upper arm

Frequently Asked Questions (FAQs)

1. Is 2.5 mg a therapeutic dose?

No. It is a starter (loading) dose, mainly to improve tolerance.

2. When will it start working?

• Some effect in 12 weeks
• Full effect usually seen after dose escalation (5 mg+)

3. Can it help in weight loss?

Yes, many patients lose weight due to:

• Appetite suppression
• Delayed gastric emptying

4. How long should I take 2.5 mg?

• Typically 4 weeks only
• Then increase as per doctor advice

5. What happens if I miss a dose?

• Take within 4 days (96 hours)
• Otherwise skip and continue next schedule

6. Can it be used with insulin or metformin?

Yes, commonly used with:

• Metformin
• SGLT2 inhibitors
• Insulin (with caution)

7. Is it safe?

Generally safe under medical supervision, but:

• Requires doctor prescription
• Monitoring for side effects is important

8. Does it cause hypoglycemia?

• Rare when used alone
• Risk increases with insulin/sulfonylureas

9. Storage conditions?

• Store in refrigerator (28C)
• Do not freeze

10. Who should avoid it?

• History of medullary thyroid carcinoma
• Severe GI disease
• Pregnancy (consult doctor)

Key Summary

• Mounjaro 2.5 mg = starting dose only
• Weekly injection for Type 2 Diabetes
• Helps blood sugar + weight control
• Needs dose escalation for full effect