Medication Side Effect:
If antibiotics like Mox 250 mg Syrup (Amoxicillin) are used, possible side effects include indigestion, diarrhea, nausea, and stomach pain. These usually resolve on their own but consult a paediatrician if they persist or worsen.

Self-care Tips:

1. Use a saline nasal spray or drops – Helps to loosen mucus and relieve nasal blockage safely.
2. Keep the child hydrated – Offer plenty of fluids like water, diluted fruit juices, or warm soups to thin mucus.
3. Maintain a humid environment – Use a humidifier or place a bowl of water near a heat source to keep air moist, easing nasal congestion.
4. Elevate the head during sleep – Slightly raising the head can help drainage and reduce nasal blockage.
5. Avoid exposure to irritants – Keep away from smoke, strong perfumes, or allergens that may worsen nasal congestion.

Since a blocked nose in a young child can be due to common cold, allergies, or other infections, it is important to consult a paediatrician for proper evaluation and treatment. They may recommend appropriate tests like Complete Blood Count (CBC) or Total IgE test if allergies are suspected.

Hope this helps. Please consult your paediatrician for personalized care and guidance.