Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 12/1/2025

Safe Pain Management During Breastfeeding

First-Line Analgesics

  • The American Association of Anaesthetists recommends paracetamol and ibuprofen as the safest first-line analgesics for breastfeeding women, which can be used immediately without interrupting nursing 1, 2
  • Paracetamol is completely safe for breastfeeding mothers, with the amount transferred to breast milk being significantly less than pediatric therapeutic doses 1
  • The Association of Anaesthetists suggests that ibuprofen is the preferred NSAID with the most reassuring safety data, and it can be used extensively for postpartum pain without interrupting nursing 1, 2
  • Diclofenac is considered the second safest option after ibuprofen, with small amounts detected in breast milk and extensive safe use during lactation 1, 2
  • Naproxen is safe despite its longer half-life, and it is widely used after caesarean section without interruption of breastfeeding 1, 2
  • Ketorolac has low levels in breast milk without demonstrable adverse effects in neonates, making it compatible with breastfeeding 1, 3
  • Celecoxib has a very low relative infant dose via milk, and breastfeeding may continue 1

Opioid Analgesics

  • Morphine is the opioid of choice if strong analgesia is required, with small amounts transferred to breast milk and no detrimental effects to infants with single doses 1
  • The lowest effective dose of morphine should be used for the shortest time possible, and infants should be monitored for excess sedation, respiratory depression, drowsiness, and poor feeding 1

Critical Safety Considerations

  • The American Association of Anaesthetists recommends using the lowest effective dose for the shortest duration, and multimodal analgesia combining paracetamol and NSAIDs is encouraged to minimize the need for opioids 1, 2, 4
  • Infants less than 6 weeks of age have immature hepatic and renal function, and extra caution is warranted with any medication 2, 3, 4
  • Preterm infants have the highest medication sensitivity and require heightened vigilance 2, 4

Anesthetic Agents

  • All standard anesthetic agents, including propofol, thiopental, etomidate, volatile agents, midazolam, and neuromuscular blockers, are compatible with breastfeeding, with no waiting period required before resuming breastfeeding 1, 4

Common Pitfalls to Avoid

  • Unnecessarily interrupting breastfeeding or advising expressing and discarding milk when using paracetamol or NSAIDs is completely unnecessary 2
  • Aspirin should not be used in analgesic doses during breastfeeding due to the risk of salicylate intoxication and bleeding in neonates 1, 2

REFERENCES

2

Safety of Ibuprofen and Paracetamol During Breastfeeding [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2026

3

IV Toradol Safety During Breastfeeding [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

4

Muscle Relaxants in Lactating Mothers [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025