What are the necessary steps before starting Ozempic (semaglutide)?

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Last updated: December 2, 2025View editorial policy

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Pre-Initiation Requirements for Ozempic (Semaglutide)

Before starting Ozempic, you must screen for personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2), confirm the patient is not pregnant, and assess baseline renal and hepatic function. 1, 2

Mandatory Contraindication Screening

Thyroid Cancer Risk Assessment

  • Ozempic is contraindicated in patients with personal or family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia type 2. 1, 2
  • The FDA warns of thyroid C-cell tumor risk observed in rodent studies, though human relevance remains undetermined. 1
  • Directly ask about any personal history of thyroid cancer and specifically inquire about family history of MTC or MEN 2 syndrome. 2

Pregnancy Status

  • Pregnancy is an absolute contraindication to Ozempic therapy. 2
  • Confirm negative pregnancy status in women of childbearing potential before initiation. 2
  • Ensure reliable contraception is in place during treatment. 2

Required Baseline Laboratory Assessments

Renal Function

  • Obtain baseline eGFR or creatinine clearance before starting therapy. 2
  • No dose adjustment is required for any degree of renal impairment, including end-stage renal disease, but baseline assessment is still necessary to monitor for potential acute kidney injury from GI-related dehydration. 1, 2

Hepatic Function

  • Assess baseline liver function tests before initiation. 2
  • No dose adjustment is required for hepatic impairment, but baseline values are needed for future monitoring. 1

Additional Metabolic Parameters

  • Obtain hemoglobin A1c to establish baseline glycemic control. 2
  • Check lipid panel, particularly in patients with dyslipidemia. 2

Clinical History Assessment

Pancreatitis Risk

  • Screen for history of pancreatitis or current risk factors. 3
  • Do not initiate Ozempic in patients at high risk for pancreatitis. 3
  • Discontinue if pancreatitis is suspected during treatment. 3

Gallbladder Disease

  • Evaluate for history of cholelithiasis or cholecystitis. 3
  • Avoid use in patients with active biliary disease or those at high risk. 3

Diabetic Retinopathy

  • Perform close monitoring of retinopathy status in high-risk patients, particularly those with diabetes duration ≥10 years or older age. 3

Gastroparesis

  • Ozempic is not recommended for patients with pre-existing gastroparesis due to delayed gastric emptying effects. 3

Medication Review and Adjustment Planning

Hypoglycemia Risk Mitigation

  • If the patient is on insulin or insulin secretagogues (sulfonylureas, meglitinides), plan to reduce these doses when initiating Ozempic to minimize hypoglycemia risk. 3, 2
  • The combination of GLP-1 receptor agonists with these medications significantly increases hypoglycemia risk. 3

Narrow Therapeutic Index Medications

  • Identify any oral medications with narrow therapeutic index (e.g., warfarin, levothyroxine) that may require closer monitoring due to delayed gastric emptying affecting absorption. 2

Patient Education Before Initiation

Expected Side Effects

  • Counsel patients about common gastrointestinal side effects including nausea, vomiting, diarrhea, and constipation. 3, 1
  • Advise on dietary modifications to mitigate GI effects: reduction in meal size, mindful eating practices (stopping when full), and decreasing intake of high-fat or spicy foods. 3

Administration Training

  • Ensure proper training on subcutaneous injection technique before the first dose. 4
  • Ozempic is administered once weekly on the same day each week, at any time of day, with or without meals. 1

Special Population Considerations

Cardiovascular Disease

  • No special pre-initiation requirements exist for patients with cardiovascular disease, as semaglutide provides cardiovascular benefits. 1
  • Monitor blood pressure and heart rate, as modest increases may occur. 2

Hypertension

  • Patients with pre-existing hypertension require no additional screening beyond standard blood pressure measurement. 3
  • Plan for weekly blood pressure monitoring by the patient during the first month of treatment. 3

References

Guideline

Ozempic Dosing and Administration Guidelines for Type 2 Diabetes

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Wegovy (Semaglutide) Prescribing Requirements

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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