How to Write an Order for Ozempic 0.5 mg Weekly Pen
Write the prescription as: "Ozempic (semaglutide) 0.5 mg subcutaneously once weekly" with specific instructions for dose titration starting at 0.25 mg weekly for 4 weeks before advancing to the 0.5 mg maintenance dose. 1
Essential Prescription Components
Drug name and formulation:
- Write "Ozempic (semaglutide) injection" 1
- Specify the pen type: The 0.25 mg or 0.5 mg pen contains 2 mg total semaglutide and delivers doses of 0.25 mg or 0.5 mg 1
Dosing instructions:
- Initial dose: 0.25 mg subcutaneously once weekly for 4 weeks 2
- Maintenance dose: 0.5 mg subcutaneously once weekly after the initial 4-week titration period 2
- If additional glycemic control is needed, the dose can be increased to 1.0 mg once weekly after at least 4 weeks on the 0.5 mg dose 2
Administration details:
- Inject subcutaneously once weekly at any time of day, with or without meals 2
- Injection sites: abdomen, thigh, or upper arm 1
- Use a new needle for each injection 1
Quantity and Refills
Dispense:
- One pen delivers multiple doses (the 0.25/0.5 mg pen contains 2 mg total) 1
- Each pen lasts 4-8 weeks depending on the dose 1
- Include disposable needles (NovoFine Plus or NovoFine needles up to 8 mm length) 1
Critical Patient Instructions to Include
Storage requirements:
- Unused pens: refrigerate at 36°F to 46°F (2°C to 8°C) until expiration date 1
- In-use pen: may be stored at room temperature 59°F to 86°F (15°C to 30°C) or refrigerated for up to 56 days 1
- Do not freeze; discard if frozen 1
- Write disposal date on calendar (56 days from first use) 1
Dose titration rationale:
- The 4-week titration at 0.25 mg is essential to mitigate gastrointestinal adverse events, particularly nausea and vomiting 2, 3
- Gradual dose escalation significantly reduces the incidence of GI side effects 4, 5
Renal Dosing Considerations
No dose adjustment required:
- Semaglutide requires no dosage adjustments for any level of renal function, including end-stage renal disease 2
- This distinguishes it from some other GLP-1 receptor agonists that require dose modifications in renal impairment 2
Contraindications to Screen For
Absolute contraindications:
- Personal or family history of medullary thyroid carcinoma 6, 5
- Multiple endocrine neoplasia syndrome type 2 (MEN2) 6, 5
- History of serious hypersensitivity reaction to semaglutide 6
Use with caution:
- History of pancreatitis (discontinue if pancreatitis is suspected) 6, 5
- History of diabetic retinopathy (close monitoring recommended in high-risk patients with diabetes duration ≥10 years) 5
- Risk factors for gallbladder disease 4, 5
Peri-operative Management
For elective surgery:
- Consider holding semaglutide for 1 week (7 days) before scheduled procedures due to delayed gastric emptying and aspiration risk 7
- The elimination half-life is approximately 7 days, reaching steady state in 4-5 weeks 8
Sample Prescription Format
Rx: Ozempic (semaglutide) 0.25 mg/0.5 mg subcutaneous injection pen
- Sig: Inject 0.25 mg subcutaneously once weekly for 4 weeks, then increase to 0.5 mg subcutaneously once weekly
- Disp: 1 pen (with needles)
- Refills: as appropriate for chronic therapy
- Instructions: Rotate injection sites. Store unused pens in refrigerator. In-use pen may be kept at room temperature or refrigerated for up to 56 days. Do not freeze.