A continuous dry cough for 10 days, especially worse at night, can be exhausting but is very common after viral infections. For relief, a generic cough suppressant (antitussive) containing dextromethorphan can help quiet the cough reflex, particularly before bed. Additionally, non-medicinal remedies like keeping hydrated, using a room humidifier, and elevating your head with extra pillows can soothe your airways. Since your cough has lasted 10 days, it is highly recommended to consult a doctor to identify the exact cause, such as post-nasal drip or asthma, and to ensure you receive the safest and most effective treatment.