Medication Suitability
Deriphyllin Retard 300 Tablet is primarily used for asthma and COPD. It may not be suitable for a dry cough with chest congestion without mucus.

Recommendations
a. Consider supportive care: hydration, rest, and possibly cough suppressants.
b. If symptoms worsen or persist, consult a healthcare provider.

Precautions
Do not start Deriphyllin without medical advice due to potential side effects and the need for monitoring.

Consultation
Seek professional advice to determine the best treatment for your condition.