For a severe cold and runny nose, an over-the-counter (OTC) antihistamine like Cetirizine or Loratadine can help dry up your nasal secretions. If you have congestion, a decongestant like Pseudoephedrine or a saline nasal spray can ease breathing. For any accompanying body aches or fever, Paracetamol or Ibuprofen is highly effective. Please stay well-hydrated and get plenty of rest. I recommend consulting a local pharmacist to ensure these OTC options are safe for you, and see a doctor if your symptoms worsen or last longer than 10 days.