For quick relief from cold and flu symptoms, you can take paracetamol or ibuprofen to help with body aches and fever. For a blocked nose, a saline nasal spray or a decongestant spray like oxymetazoline can clear your nasal passages (use for no more than 3-5 days). If you have a runny nose or sneezing, an antihistamine like cetirizine can be helpful. Remember to rest, drink plenty of fluids, and always follow the package instructions for correct dosages. If your symptoms persist or worsen after a few days, please consult a doctor for a check up.