My daughter, who is almost 6 months old, has had a dry cough for 1 week, with crackling in her bronchial area. Salinex for 2-3 days. What else should I do?

You can try replacing the Salinex with the technique mentioned in the link provided. Administer 5 mL per nostril four times a day for two days, then reduce to two times a day. You should see an improvement in symptoms within 24 hours.