Drinking fluid and salt water gurgle will surely help you but that will have temporary relief ,for permanent relief from common cold and cough there is treatment only in homoeopathy .

Hi...,There's no cure for the common cold. Antibiotics are of no use against cold viruses. Over-the-counter (OTC) cold preparations won't cure a common cold or make it go away any sooner, and most have side effects. . Drink lots of fluids. Water, juice, clear broth or warm lemon water are all good choices. They help replace fluids lost during mucus production or fever.. Soothe your throat. A saltwater gargle — 1/4 to 1/2 teaspoon salt can temporarily relieve a sore or scratchy throat....Use saline nasal drops. To help relieve nasal congestion, try saline nasal drops. ... Adjust your room's temperature and humidity. Keep your room warm, but not overheated. If the air is dry, a cool-mist humidifier or vaporizer can moisten the air and help ease congestion and coughing. Be sure to keep the humidifier clean to prevent the growth of bacteria and molds...