Used primarily in the management of diabetic complications, particularly diabetic neuropathy. It helps reduce symptoms such as numbness, tingling, and pain in the limbs by inhibiting the accumulation of sorbitol in nerve tissues. This action supports improved nerve function and conduction velocity in patients with long-term diabetes. Also investigated for potential benefits in diabetic retinopathy and nephropathy due to its protective effects on small blood vessels and nerves. Commonly used in oral form as part of long-term diabetic care in certain countries.