A Trial Evaluating Vitamin D Normalization on Major Adverse Cardiovascular-Related Events Among Myocardial Infarction Patients

Inclusion Criteria: 1. Patients, both male and female, \>18 years old 2. Undergone angiography for a MI (troponin positive \[\>0.04 ng/mL\] and ACS diagnosis) within the past month 3. Receive follow-up care at an Intermountain Healthcare facility 4. Not taking or taking \<1000 IU of vitamin D daily within the last 3 months 5. Willing to provide informed consent and participate in follow-up visits Exclusion Criteria: 1. Hypersensitivity to vitamin D products 2. History of previous vitamin D supplementation of \>1000 IU daily within the past 3 months (i.e., \>40% of the days during the past 3 months). 3. Systemic disease (including terminal cancer, cirrhosis, end stage COPD, etc) with a reduced (\<12 months) life expectancy 4. Hypercalcemia (calcium levels \>10.6 mg/dL) 5. Subject participation in previous investigational interventional studies within 30 days of the current study. 6. History of psychiatric illness/condition that would interfere with their ability to understand or complete the requirements of the study, a condition that in the opinion of the investigator or their designee places the subject at an unacceptable risk as a participant. 7. Pregnant and/or lactating women and women of child bearing potential who are not using acceptable means of contraception as determined by the clinical investigators.