Lemsip Max Decongestant Cold & Flu Hot Drink Blackcurrant is for the temporary relief of symptoms of cold and flu, including body aches and pains, sore throat, headache, sinus and nasal congestion. Reduces fever. 1 Blocked or runny nose 2 Headaches 3 Sore Throat 4 Body aches & pains 5 Reduces fever