The amount of water is the same, but the strength is different
That means 50 units is always equal to 0.5 mL
For semaglutide, the concentration varies by product formulation: Ozempic pens come in multiple strengths: 2 mg/1.5 mL, 4 mg/3 mL, and 8 mg/3 mL Wegovy pens are single-dose devices with different concentrations: 0.25 mg, 0.5 mg, and 1.0 mg in 0.5 mL
0.5 mg 37 units 4 mg/3 mL pen (1.34 mg/mL): Theoretical unit equivalent: 1 mg 75 units 8 mg/3 mL pen (2.67 mg/mL): Wegovy (for chronic weight management): Each Wegovy pen is a single-dose, single-use device: 0.25 mg/0.5 mL (0.5 mg/mL) 25 units 0.5 mg/0.5 mL (1 mg/mL) 50 units 1 mg/0.5 mL (2 mg/mL) 50 units 1.7 mg/0.75 mL (2.27 mg/mL) 75 units 2.4 mg/0.75 mL (3.2 mg/mL) 75 units Rybelsus (oral semaglutide): Rybelsus is an oral tablet formulation available in 3 mg, 7 mg, and 14 mg strengths
Common concentrations include 1 mg/mL, 2.5 mg/mL, and 5 mg/mL