Difflam Sore Throat Rinse 200ml Benzydamine, the active ingredient in Difflam Sore Throat Rinse, acts locally to stop pain & inflammation. This means it can be used to treat pain, soreness & swelling of the mouth & throat, & discomfort of a sore throat. Directions Gargle with 15ml of Difflam Sore Throat Rinse every 1 & a half to 3 hours. Use the measuring cup provided to measure out 15ml of the solution. Gargle with the solution, or rinse around mouth & throat, for 20-30 seconds, then spit out. DO NOT SWALLOW Difflam Sore Throat Rinse should not be used for more than 7 days at a time. If your throat condition gets worse, or does not get better, talk to your pharmacist or doctor. If you accidentally swallow a normal 15ml dose by mistake, you need not worry; this is unlikely to cause you a problem. If you swallow a larger amount you should contact your pharmacist, doctor or nearest hospital casualty department immediately.