Nefrotec DS is a combination of herbs that treats urinary tract infection and kidney conditions. The herbal medicine provides urinary antiseptic, prevention and removal of stones in bladder or kidneys (antilithic), and diuretic (increased production of urine) properties. Both dogs and cats can experience bladder and kidney issues. These include urinary tract infections, stones, inflammation of the urethra and cystitis – which is an inflammation of the bladder. Kidney disease is more common in cats, but can also be found in dogs. Signs of these conditions include painful urination, more frequent urination, blood or pus in the urine, or blockage of urination.