Evaluation of the concurrent use of dolutegravir and metformin in human immunodeficiency virus-infected patients
Abstract
An analysis of the interaction between dolutegravir and metformin was conducted in the HIV ambulatory clinic setting. This was a multicenter, retrospective case series evaluating adult, HIV-infected patients concurrently prescribed dolutegravir and metformin. Historical electronic medical records were utilized to collect case-specific data. Laboratory parameters including serum creatinine (SCr), hemoglobin A1c (HgbA1c), plasma HIV RNA, CD4 cell count, and lactate were reviewed. Adverse drug reactions were assessed using patient-reported gastrointestinal intolerance and hypoglycemic symptoms. Metformin dose reduction or discontinuation was also recorded. Nineteen patients identified as concurrently taking metformin and dolutegravir were included. Eighteen patients were on metformin prior to dolutegravir initiation, with 13 having received metformin for at least six months prior to dolutegravir. At the time of dolutegravir initiation, one patient had a preemptive metformin dose reduction. Seven patients were initiated on dolutegravir with a metformin dose greater than 1000 mg daily. Eleven patients had baseline and three- to six-month follow-up HgbA1c. Of those 11 patients, eight had stable or decreased values. Thirteen of the 19 patients had an increase in SCr, with a median increase of 0.3 mg/dl (0.03-0.43). Gastrointestinal distress (N = 3) and hypoglycemic symptoms (N = 3) were reported in a total of five patients. Adverse drug reactions resulted in metformin dose…
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