Post Opening Stability and Safe Use of Paediatric Medicines and Nutritional Preparations in India: An Evidence Based Review

Background: In paediatric medicine, liquid preparations such as syrups, suspensions, drops, reconstituted antibiotics, anticonvulsants, endocrine therapies, and nutritional supplements are widely prescribed in India. While expiry dates are printed on packaging, they reflect unopened shelf-life and not the actual safe-use period once a product has been opened or reconstituted. Caregivers in India often continue using opened medicines until the bottle is “finished,” leading to reduced efficacy, antimicrobial resistance, and avoidable adverse outcomes.Methods: This narrative review synthesises evidence from manufacturer product information leaflets of Indian brands, guidance from the Indian Academy of Pediatrics (IAP), the United States Pharmacopeia (USP), the World Health Organization (WHO), Ministry of AYUSH, and published literature. Medicines reviewed include antipyretics, analgesics, antiemetics, antispasmodics, antibiotics, probiotics, multivitamins, anticonvulsants, endocrine agents, Ayurvedic syrups, and paediatric nutritional preparations such as infant formula, expressed breast milk, and ready-to-use therapeutic foods (RUTF).Results: Evidence indicates that oral suspensions such as paracetamol and ibuprofen are safe for 3–6 months after opening; reconstituted antibiotics must be discarded within 7–14 days; oral rehydration solution (ORS) should be used within 24 h; probiotics vary, with sachets consumed immediately and drops within 3 months; iron syrups last 1–3 months; multivitamins 3–6 months; vitamin D drops up to 12 months; anticonvulsants like sodium valproate and levetiracetam remain stable for 6–7 months, while phenobarbitone and carbamazepine suspensions should be discarded in 3 months; endocrinological drugs such as thyroxine drops remain usable for 6–8 weeks, insulin and growth hormone vials/pens for 28 days; infant formula tins must be used within 3–4 weeks of opening, while reconstituted feeds last only 2 h. Ayurvedic syrups lack stability data but should be discarded within 3 months.Conclusion: In India’s hot and humid climate, conservative discard timelines are essential. Adopting standardised rules—ORS 24 h, antibiotics 7–14 d, paracetamol/ibuprofen syrups 3–6 mo, insulin and growth hormone 28 d, infant formula tins 3–4 weeks, and Ayurvedic syrups 3 mo—will prevent therapeutic failure and enhance child safety. Paediatricians should counsel families actively and advocate inclusion of Ayurvedic and nutritional preparations in safety discussions.