What is the daily fluid intake recommendation in ounces for an eight-month-old infant?

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From the Guidelines

An eight-month-old child should drink approximately 24-32 ounces of formula per day. This recommendation is based on the general guidelines for fluid requirements in children, which parallel energy needs 1. According to the ESPGHAN/ESPE/NESPEN guidelines, fluid requirements can be calculated based on weight, with 100 ml/kg/d for every kilogram of body weight < 10 kg, 50 ml/kg/d for every kilogram between 10-20 kg, and 25 ml/kg/d for every kilogram above 20 kg 1. However, for an eight-month-old child, a more practical approach is to consider the overall dietary needs, including calories, protein, fat, calcium, and vitamin D.

  • The child's diet should include a balance of formula or breast milk, solid foods, and water.
  • Solid foods are becoming increasingly important in the diet at this age, so formula or breast milk intake may naturally decrease slightly.
  • Water should be offered in a sippy cup with meals, but should not replace milk feedings.
  • If the baby seems consistently hungry or is not gaining weight appropriately, it is essential to consult with a pediatrician to adjust feeding amounts 1.
  • As the baby approaches one year, milk intake will gradually decrease as solid food consumption increases.

From the Research

Fluid Intake for Eight-Month-Old Children

  • The American Academy of Pediatrics recommends that children between 6 and 12 months old should receive 16-20 ounces (about 0.5-0.6 liters) of formula or breast milk per day, in addition to solid foods 2.
  • However, the exact amount of fluid intake may vary depending on the individual child's needs and activity level.
  • For children with diarrhea or dehydration, oral rehydration solutions can be used to help replace lost fluids and electrolytes 3, 4, 5.
  • Breastfed children can continue to breastfeed during rehydration therapy, and may not require additional water 6.

Oral Rehydration Solutions

  • Oral rehydration solutions can be effective in treating dehydration in children, and can be used in conjunction with breast milk or formula 3, 4, 5.
  • The World Health Organization recommends the use of oral rehydration solutions with a specific composition of salts and sugars to help replace lost electrolytes and fluids 4.
  • Studies have shown that oral rehydration solutions can be safely used in breastfed children without additional water 6.

Breastfeeding and Fluid Intake

  • Breastfeeding can provide important fluids and electrolytes for children, and can help to prevent dehydration 2, 6.
  • Children who are breastfed may require less additional fluid intake than those who are formula-fed 2.
  • However, breastfed children may still require oral rehydration solutions or other fluids in addition to breast milk if they are experiencing diarrhea or dehydration 3, 4, 5.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

[Oral rehydration in newborns with dehydration caused by diarrhea].

Boletin medico del Hospital Infantil de Mexico, 1990

Research

Comparison of oral and intravenous fluid therapy in newborns with hypernatremic dehydration.

The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians, 2014

Research

Oral rehydration solution safely used in breast-fed children without additional water.

The Journal of tropical medicine and hygiene, 1984

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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