You can take heart pills while breastfeeding, but you must follow your doctor’s advice and follow medical instructions, because heart pills are a cautionary drug for pregnant women. There is no major effect on the application of quick-acting heart pills during breastfeeding, but to be on the safe side, it is best to stop breastfeeding for 1-2 days to prevent the drug from affecting the baby through breast milk. If you have a heart condition that requires medication, it is best to keep the symptoms under control with your usual medication. It is recommended not to use drugs blindly during breastfeeding. If you have uncomfortable symptoms, you need to use drugs under the guidance of a physician, so that they do not affect normal breastfeeding. During breastfeeding, it is also necessary to pay attention to rest, avoid overexertion leading to chest tightness, panic attacks and other discomforts, and avoid spicy, greasy and stimulating foods. If you feel uncomfortable you should seek medical attention in time to avoid delaying your condition.