Astragalus may potentiate hyperglycemic and hyperuremic effects of glucose elevating agents. Diabetics should consult with their doctor before taking.
– Zhang H, et al. — Treatment of adult diabetes with jiangtangjia tablets. J Trad Chin Med 7(4): 37-39, 1986.

Caution should be used when taking astragalus at the same time as diabetic, high blood pressure, anti-viral, or blood-thinning medications because of the potential for increased effects.

Astragalus may interfere with immunosuppressive therapy.
– Zhou MX, et al. — Therapeutic effect of astragalus in treating chronic active hepatitis and the changes in immune function. J Chin People’s Liberation Army 7(4): 242-244, 1982.