Depends on your symptoms.

• Paracetamol for a general feeling of malaise
• Ibuprofen for fever and muscle and joint aches
• A decongestant like pseudoephedrine if your nose is clogged up, but not the "alternative" phenylephrine that's often pushed now in over the counter decongestants. It just doesn't work. A xylometazoline spray works too, but I try to avoid it because it can easily lead to rebound congestion.