Vitamin D for Established Type 2 Diabetes (DDM2)

Vitamin D for Established Type 2 Diabetes (DDM2)

This research study in adults with established type 2 diabetes will test whether daily vitamin D supplementation affects how the body processes glucose (sugar).

Inclusion Criteria:

• Established type 2 diabetes, defined by one of the following two criteria:
• Age ≥ 25 years and ≤ 75 years
• BMI: 23 to 40 kg/m2 inclusive
• Provision of signed and dated written informed consent prior to any study procedures.

Major Exclusion Criteria

• "Severe" diabetes defined by one of the following criteria:
• - (a) Symptoms of hyperglycemia;
• - (b) Screening HbA1c ≥ 7.5 [may indicate potential for rapid progression during the trial necessitating need to amplify diabetes-specific pharmacotherapy]
• History of nephrolithiasis or hypercalcemia