Hi, Thanks for your question. Noted your concern. Invokana contains Canagliflozin and Forxiga contain Dapagliflozin both are of same class of antidaibetic medicine SGLT2 inhibitor. It act by excreting extra glucose from body through urine by lowering renal threshold for glucose excretion. While excreting glucose there may be loss of water and some essential electrolytes like sodium, potassium through urine which may be responsible for leg cramps. Adequate water intake and regular monitoring for serum electrolytes may help in prevention of these symptoms. Diabetic neuropathy may also cause these types of symptoms. In such a case I may suggest- - Detailed physical examination to assess neuropathy. - Investigations Complete Blood Count HbA1c Fasting and Post-prandial Blood sugar level. Renal function test Liver Function test Vitamin B12 and Vitamin D level Urine examination. Depending upon above evaluation appropriate changes in medicines if required may be suggested. Hope this helps you.