GLP-1 pill & pen identifier

Most GLP-1s are injection pens, not pills — so this tool covers pen colors, dose-dial markings, and brand engraving for every FDA-approved GLP-1, plus Rybelsus oral tablets and a verification checklist for compounded semaglutide and tirzepatide.

Safety first. If your pen or tablet does not match the markings shown here, contact the dispensing pharmacy immediately. Never inject a medication you cannot positively identify — counterfeit GLP-1 products have been documented in the US supply chain (FDA, 2024).

Select your GLP-1 pen

Schematic — cap color reflects lowest-dose strength.

Novo Nordisk

Wegovy (semaglutide)

Pen type: single dose

Pen appearance: White body with color-coded cap per dose strength; cap color matches carton dose label
Brand engraving: "Wegovy" embossed on barrel + Novo Nordisk bull-logo on cap
Lot format: 6-digit alphanumeric, laser-etched near base of barrel
Storage: Refrigerate 36–46°F (2–8°C) until first use; then ≤86°F up to 28 days

30-second checkPen is single-use — if dose counter shows anything other than your prescribed dose pre-injection, do NOT use.

Dose-by-dose markings

Dose	Dial / label color
0.25 mg	light grey cap
0.5 mg	red cap
1 mg	yellow cap
1.7 mg	blue cap
2.4 mg	navy cap

To verify the NDC printed on your carton, look it up in the FDA's official National Drug Code Directory — it is the authoritative record, and we don't republish drug codes from a copy that could drift out of date.

View full Wegovy drug page

GLP1Zoom is an affiliate comparator — we do not sell, dispense, or stock medications. Pen-marking and tablet-imprint data is sourced from FDA prescribing information (DailyMed) and the NDC directory, last reviewed 2026-06. Always verify with your dispensing pharmacist before injecting.

Identifier tool