Avoid breastfeeding for several hours after eating spicy food
Generally, it is recommended to wait 4–6 hours after eating spicy food before breastfeeding, allowing the body time to metabolize some of the capsaicin. If either the mother or baby is sensitive to capsaicin, or if a large amount of spicy food has been consumed, the waiting period should be extended accordingly. When in doubt, consult a healthcare provider in advance. Detailed analysis is as follows:

If the mother usually consumes only small amounts of spicy food without discomfort, and the baby shows no signs of irritability, diarrhea, or allergic reactions, waiting 4–6 hours after eating spicy food before nursing is generally appropriate. During this period, the body can partially metabolize capsaicin through digestion and absorption, reducing its concentration in breast milk and minimizing gastrointestinal irritation for the baby, thereby preventing discomfort.
If the mother eats a large quantity of spicy food, has a sensitive digestive system prone to discomfort, or if the baby has previously shown symptoms such as rashes, spitting up, or abnormal bowel movements after the mother consumed spicy food, the breastfeeding interval should be extended to 6–8 hours or longer. Significant amounts of capsaicin may remain in breast milk for an extended period, and sensitive infants may develop gastrointestinal or skin issues upon exposure. A longer waiting period helps further reduce residual capsaicin in breast milk.
After consuming spicy food and breastfeeding, closely monitor the baby's condition. If the baby exhibits persistent crying, diarrhea, or other adverse symptoms, avoid spicy foods in the short term. If symptoms persist, seek medical evaluation for the baby promptly.