Cough often gets worse at night because lying down allows mucus to drain into the throat and irritate the airways. During sleep, the airways can narrow slightly, and dry bedroom air may further aggravate the cough.

Since your cough is productive (with phlegm), Corex‑D is not advisable, as it suppresses the cough reflex and may prevent mucus from clearing, which can worsen your condition. A persistent nighttime cough with chest pain needs proper medical evaluation to rule out infection or other causes. It is strongly recommended not to take any medication on your own; treatment should only be started after a correct diagnosis and strictly under the supervision of a qualified doctor.

You may take Corex DX Syrup for short-term relief of a dry cough. It contains chlorpheniramine and dextromethorphan, which work by reducing the cough reflex and help relieve allergy-related symptoms such as sneezing, a runny nose, and watery eyes. However, it may cause drowsiness, dizziness and dry mouth, so it should be taken at night and you should avoid driving or alcohol. It is not suitable if you have a chesty cough with mucus, as it may prevent phlegm from clearing. Your nighttime worsening cough may also be due to post-nasal drip, allergies or acid reflux. Drink warm fluids, use steam inhalation and keep your head elevated while sleeping. If your symptoms persist for more than one week or you develop fever, breathlessness or chest pain, please consult a doctor for proper evaluation.

For a three-day cold and cough, symptoms are likely viral and can be managed at home. For body aches or mild fever, paracetamol or ibuprofen can provide relief. If you have a dry cough, dextromethorphan may help, while guaifenesin is suitable for a wet cough. For congestion, saline nasal sprays or pseudoephedrine are effective. Rest well and stay hydrated with warm fluids. Most colds resolve on their own, but if you develop shortness of breath, a high fever, or if symptoms last more than ten days, please consult a doctor for a personalized evaluation.

For a three-day cold and cough, symptoms are likely viral and can be managed at home. For body aches or mild fever, paracetamol or ibuprofen can provide relief. If you have a dry cough, dextromethorphan may help, while guaifenesin is suitable for a wet cough. For congestion, saline nasal sprays or pseudoephedrine are effective. Rest well and stay hydrated with warm fluids. Most colds resolve on their own, but if you develop shortness of breath, a high fever, or if symptoms last more than ten days, please consult a doctor for a personalized evaluation.

Corex DX Syrup is a prescription medicine and should only be taken under medical supervision. Since your cough has lasted for 6 days, it is important to consult a doctor, as a persistent cough can have multiple causes, such as infection, allergy, asthma, or other underlying conditions. The treatment depends on identifying the correct cause, so a doctor can evaluate your condition, decide if Corex DX Syrup is appropriate, and guide the correct dose and timing. Avoid self medication, as it may mask symptoms, delay proper diagnosis, and affect appropriate treatment.