There is no most effective way of how to replenish calcium during breastfeeding. Mothers can play a role in replenishing calcium through dietary modification and medication. 1. Dietary adjustments: breastfeeding women can choose to eat calcium-rich foods, such as milk, eggs, goat’s milk, soybeans, tofu, soy milk, kelp and so on. Eating these foods during breastfeeding can effectively replenish the body’s lack of calcium, which is good for promoting the body’s recovery. 2. Medication: If food therapy cannot replenish the lack of calcium, you can take oral calcium tablets under the guidance of a doctor, such as calcium gluconate, calcium lactate, etc. You can also take vitamin drugs, such as vitamin C, vitamin D, etc., which are beneficial to replenish calcium. Breastfeeding women need to report to the doctor in time if they experience any discomfort during the medication period.