Inclusion Criteria:  Males and females ≥ 18 years old Clinical diagnosis of type 1 diabetes for at least one year Treatment with multiple daily insulin injections or insulin pump therapy with insulin analogs (rapid, ultra-rapid and basal insulin) A glycated hemoglobin A1c ≤ 10%  Exclusion Criteria:  Clinically significant microvascular complications: nephropathy (eGFR < 40 ml/min), severe proliferative retinopathy as judged by the investigator, neuropathy (particularly diagnosed gastroparesis) Recent (< 3 months) acute macrovascular event (e.g., acute coronary syndrome or cardiac surgery) Known significant cardiac rhythm abnormality based on investigator's judgement Known significant neurological abnormality (e.g., seizure disorder) based on investigator's judgement Ongoing pregnancy or breastfeeding Severe hypoglycemia episode within 1 month of screening Known uncorrected hypokalemia within the past 3 months (potassium < 3.5 mmol/L)