Understanding Your Medication's Concentration

What Does “Concentration” Mean?

Concentration tells you how much medication is packed into each milliliter (mL) of liquid, written as mg/mL. It's a measure of strength, not a measure of your dose — your dose is the total amount of medication (in mg) your provider has prescribed for each injection.

Our Compounded Tirzepatide

Contour Health's compounded tirzepatide is available in two concentrations: 10 mg/mL and 20 mg/ mL. Both contain the same medication — the difference is simply how much is dissolved in each mL of liquid.

Key takeaway: The same prescribed dose (in mg) requires a different amount of liquid depending on which concentration you have. A higher concentration means less liquid is needed for the same dose — it does not mean a stronger or higher dose.

Why This Matters

• Two vials can look very similar but require different injection volumes for the exact same dose.
• Drawing up the wrong volume for your vial's concentration could mean getting too much or too little medication. That's why it's important to always confirm which concentration you currently have before you inject.
• A Simple Example (for illustration only) Say your prescribed dose is 5 mg: At 10 mg/mL, 5 mg = 0.5 mL.
• At 20 mg/mL, 5 mg = 0.25 mL.

Same dose, two different amounts of liquid. Your care team will always tell you the exact volume (in mL or units) to draw up for your specific vial — you shouldn't need to calculate this yourself, but understanding why the number can change helps avoid confusion.

How to Check Your Concentration

• Look at the label on your vial or box — it will clearly state 10 mg/mL or 20 mg/mL.
• Compare it to the instructions from your most recent prescription or care team message.
• If you receive a new vial and aren't sure whether the concentration matches your last one, message your care team or pharmacist before you inject.
• Important: Never estimate your injection volume based on a previous vial's concentration. Always confirm the correct volume for your current vial with your care team.

Questions?

• If anything about your dose, concentration, or injection volume is unclear, message your care team before your next injection — we're glad to double-check with you.
• team, and message us with any questions.

This information is for general education only and is not a substitute for medical advice. Always follow the guidance of your Contour Health care team, and message us with any questions.