Vicks First Defence Spray (15ml). Helps to stop your cold in its tracks!. Vicks First Defence is a medical device, here to help you in the fight against common cold viruses.. You can use it at first signs of a cold to help reduce the risk of developing a full blown cold or you can even start using it when exposed to cold viruses.. Start to use within 36h of feeling sick with the first cold symptoms (e.g. a tickle at the. back of the throat or sneezing), before the cold has fully developed.. Use up to 4 times per day. Continue to use for 2 days after symptoms subside.
