Diabetic geriatric patients received 900 mg Hydroxytoluic acid orally as a single dose or as a daily dose of up to 2.7g/day for 3 months. For patients receiving a single dose a 50 g glucose tolerance test was performed 2 hours after dosing, for longitudinal patients the glucose tolerance test was performed monthly or every two months. After a single 900 mg dose, plasma insulin levels showed considerable increases, plasma free fatty acid fell 2 hours after dosing with hydroxytoluic acid. Daily dosing of 1.8 g/day hydroxytoluic acid as the sole treatment allowed patients to control their diabetes but was not significantly different from controls. When added to the existing drug regimen patients receiving hydroxy toluic acid showed a smoothing of control of blood sugar with decreased needs of insulin or sulphonylurea.

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