Equipoise is the brand name of an anabolic steroid called boldenone undecytenalate. There are many anabolic steroids and unfortunately individual agents belonging to this class of medicines, except a few, have not been studied in depth. However anabolic steroids have a class effect on insulin: they potentiate its efficacy resulting in hypoglycaemia and the need to readjust the dose of insulin. The downward need for insulin can be as much as 30% in some cases.
The other problem can be weight gain, which is not desirable in diabetes.