For a frequent cough and cold, treatment depends on the cause. For temporary relief, you can use over-the-counter medicines: antihistamines (like cetirizine) for a runny nose, cough suppressants (like dextromethorphan) for a dry cough, or expectorants (like guaifenesin) for a wet cough. Pain relievers like paracetamol can help with body aches. However, because your symptoms are 'frequent,' it is crucial to consult a doctor to rule out underlying conditions like allergies, asthma, or sinus infections rather than just self-treating. Ensure you stay well-hydrated and get plenty of rest.

A cough lasting 6 months is considered chronic and may be due to conditions such as asthma, chronic bronchitis, acid reflux, post-nasal drip, or, less commonly, infections such as tuberculosis. While your current syrup provides temporary relief by suppressing coughs and reducing allergic reactions, it only masks symptoms rather than treating the underlying cause. You should consult a doctor for a proper evaluation, which may include a chest X-ray and lung function tests, to determine the cause, start appropriate treatment, and prevent any complications.

Colds and coughs are typically caused by viruses, which is why antibiotics (which only target bacteria) did not provide relief. You should stop taking unprescribed antibiotics. Instead, focus on symptomatic relief: 1. For pain or fever: Take paracetamol or ibuprofen. 2. For cough: Use an over-the-counter cough suppressant (for dry cough) or expectorant (for wet cough). 3. For congestion: Try saline nasal sprays or oral decongestants. 4. General care: Stay well-hydrated with warm fluids and get plenty of rest. If your symptoms worsen, last more than 10 days, or you experience breathing difficulties, please consult a doctor for a proper evaluation.