This trial is conducted in Europe. The aim of the trial is to evaluate the effect of semaglutide on cardiac repolarisation in healthy subjects.

Inclusion Criteria:

• BMI (Body Mass Index): 20-30 kg/m^2
• Body weight: 60-110 kg
• Normal ECG (electrocardiogram)

Exclusion Criteria:

• Female who is pregnant, breast-feeding or intends to become pregnant or is of child-bearing potential and not using an adequate contraceptive method. Women of child-bearing potential must use an effective method of birth control for the duration of the trial and for 5 weeks following the last dose of semaglutide. Only highly effective methods of birth control are accepted (i.e. one that results in less than 1% per year failure rate when used consistently and correctly such as implants, injectables, combined oral contraceptives, some intrauterine devices), or sexual abstinence or vasectomised partner
• Any clinically significant disease history, in the opinion of the investigator, or systemic or organ
• History of seizures, epilepsy, syncope, cardiac arrest, cardiac arrhythmia or Torsades de Pointes, A-V (Atrioventricular) block or structural heart disease
• Family history of long QT (Interval in the ECG: from the start of the QRS complex to the end) syndrome (either objectively diagnosed or suggested by sudden death due to cardiac causes before the age of 50 of a 1st degree relative)
• Family history of sudden cardiac death before the age of 50 of a 1st degree relative
• Use of prescription or non-prescription systemic or topical medicinal products (except routine vitamins, acetylsalicylic acid, paracetamol and contraceptives) within 3 weeks (or within 5 halflives of the medicinal product, whichever is longest) prior to the first dosing of semaglutide
• Smoking, drug or alcohol abuse