1.7 mg of semaglutide equals 68 units (0.68 mL) on a U-100 insulin syringe at the most common compounded concentration of 2.5 mg/mL. The dose equivalence changes with different vial concentrations: 34 units at 5 mg/mL or 17 units at 10 mg/mL. This dose is the Wegovy week 13-16 titration step, sitting between the 1.0 mg and 2.4 mg maintenance dose. Compounded products require manual math; brand-name pens deliver the dose pre-measured.
The Conversion at Each Common Concentration
| Vial Concentration | Volume Needed | Units on U-100 syringe |
|---|---|---|
| 1 mg/mL | 1.70 mL | 170 units (would need ≥2 mL syringe) |
| 2.5 mg/mL | 0.68 mL | 68 units |
| 5 mg/mL | 0.34 mL | 34 units |
| 10 mg/mL | 0.17 mL | 17 units |
Where 1.7 MG Fits in the Wegovy Schedule
Wegovy uses a 16-week titration to minimize gastrointestinal side effects. The 1.7 mg dose sits between 1.0 mg and the 2.4 mg maintenance dose:
| Week | Dose | Purpose |
|---|---|---|
| 1-4 | 0.25 mg | Initial — minimize side effects |
| 5-8 | 0.5 mg | First escalation |
| 9-12 | 1.0 mg | Mid-titration |
| 13-16 | 1.7 mg | Pre-maintenance step |
| 17+ | 2.4 mg | Maintenance (full effect) |
If 2.4 mg causes intolerable side effects, some prescribers maintain patients at 1.7 mg as a long-term dose. This is off-label maintenance but produces meaningful weight loss with potentially better tolerability for some patients.
How to Draw Up 1.7 MG (at 2.5 mg/mL Concentration)
- Wash hands and prepare a clean work surface
- Wipe the vial rubber stopper with an alcohol pad and let dry
- Attach a 1 mL U-100 insulin syringe needle (or appropriate small-volume insulin syringe)
- Pull the plunger back to 68 units while the needle is in air
- Insert the needle into the vial through the rubber stopper
- Push the plunger down to inject air into the vial
- Invert the vial and slowly pull the plunger back to 68 units while the needle tip stays below the liquid surface
- Tap gently to remove air bubbles, then adjust to exactly 68 units
- Withdraw the needle, prepare your injection site, and inject subcutaneously
Why Concentration Matters for This Dose
At 1.7 mg, dose-conversion errors have meaningful consequences:
- If you have 2.5 mg/mL but draw 34 units (the 5 mg/mL count), you’d inject only 0.85 mg — half the intended dose
- If you have 5 mg/mL but draw 68 units (the 2.5 mg/mL count), you’d inject 3.4 mg — twice the intended dose, exceeding the maximum Wegovy dose
Always verify concentration on each refill, especially if you’ve recently changed pharmacies or your pharmacy has updated formulations.
Brand-Name Equivalents at 1.7 MG
The Wegovy 1.7 mg pen delivers exactly 1.7 mg per injection with no math required. The pen is identifiable by its specific color/label coding (each Wegovy dose has a unique color). Pens contain a single dose; you don’t measure anything.
The 1.7 mg pen is used during the week 13-16 titration phase of Wegovy treatment. Some prescribers maintain patients at this dose long-term if higher doses cause intolerable side effects.
Compounded Semaglutide Considerations at 1.7 MG
If your compounded semaglutide vial is supplied at 2.5 mg/mL with about 5 mL total volume (a common configuration), the vial contains roughly 12.5 mg of semaglutide. At the 1.7 mg dose, that’s about 7 weekly doses per vial. Plan refills accordingly to avoid running out mid-titration.
Higher concentrations (5 or 10 mg/mL) require fewer mL per dose and more total doses per vial but increase dosing-error risk because each unit represents more mg.
The Bottom Line
1.7 mg of semaglutide equals 68 units at the standard 2.5 mg/mL compounded concentration, 34 units at 5 mg/mL, or 17 units at 10 mg/mL. This dose is the Wegovy week 13-16 titration step toward the 2.4 mg maintenance dose. Always verify the concentration of your specific vial before drawing up the dose. Brand-name Wegovy pens deliver this dose pre-measured with no math required. Consult your prescriber and pharmacist for any dose changes. For more on GLP-1 treatment options, see our hub.
