Lemsip Max Day And Night Cold And Flu Relief Capsules Contains A Combination Of Ingredients Which Are Effective In Relieving The Symptoms Associated With Colds And Flu, Including Relief Of Aches And Pains, Sore Throat; Headache; Nasal Congestion And Lowering Of Temperature. Paracetamol Is A Well Known Painkiller. It Is Effective Against Aches And Pains, Including A Headache, And Can Also Reduce A Fever. Phenylephrine Hydrochloride Reduces Swelling In The Passages Of The Nose, Relieving Nasal Congestion And Reducing The Pressure Which May Cause A Headache. It Is Important To Drink Plenty Of Fluids When Suffering From Colds And Flu. Do Not Take This Medicine If You Are Allergic To Any Ingredient, You Have A Serious Heart Condition, You Have High Blood Pressure Or An Overactive Thyroid, You Are Taking Or Have Taken Within The Last 14 Days A Medicine Called A Monoamine Oxidase Inhibitor (Maoi), Usually Used To Treat Depression, You Have A Cerebral Or Aortic Aneurysm (A Weakened Artery In The Brain Or Heart). You Should Ask The Pharmacist Before Taking This Medication If You Are Pregnant, Have Raynaud"S Syndrome, Have Diabetes Mellitus, You Are Taking Beta-Blockers Or Vasodilators, You Are Taking Tricyclic Antidepressants, Other Decongestants, Or Barbiturates (Used To Treat Sleep Problems Or Epilepsy), You Have A Problem With Your Liver Or Kidneys Or A History Of Stomach Ulcer, You Have Non-Cirrhotic Liver Disease, Are Taking Other Medicines. Immediate Medical Advice Should Be Sought In The Event Of An Overdose, Even If You Feel Well Because Of The Risk Of Delayed, Serious Liver Damage. Possible Side-Effects: Allergic Reactions, Changes In The Number Of Blood Cells, Such As Thrombocytopenia Or Agranulocytosis, Nausea ,Abdominal Discomfort, High Blood Pressure With Headache, Central Nervous System Effects Such As Difficulty In Sleeping, Restlessness/Nervousness Or Mental Confusion Often Accompanied By Hallucinations, Palpitations