Gastrointestinal upset, including vomiting and loose stools, can occasionally be a side effect of medications like Monticope (levocetirizine and montelukast) or Ibugesic Plus (ibuprofen and paracetamol), as ibuprofen can sometimes irritate a child's sensitive stomach. To support her recovery, focus on hydration using Oral Rehydration Salts (ORS). Besides Cerelac, you can offer light, easily digestible foods like mashed bananas, soft rice, curd, and diluted khichdi. These are gentle on her stomach. Please consult her pediatrician promptly to discuss these symptoms and safely review her ongoing medications.