The correct way to take vitamin d3 drops for pregnant women is to take it with the shell, 1~2 capsules a day, once a day, the specific medication needs to follow the doctor’s instructions, do not blindly use the medicine on your own. Vitamin d3 drops are used to give pregnant women to take, it is possible to chew the pills directly, can be swallowed together with the capsule shell, do not need to peel off the shell of vitamin d3 drops. Vitamin d3 drops are used to prevent as well as treat vitamin D deficiency, such as the more common rickets. Additionally, supplementation with vitamin d3 drops usually needs to be synchronized with a calcium supplement, as the main role of vitamin D is to promote calcium absorption, so it is not appropriate to take vitamin d3 drops alone. Common adverse effects of vitamin d3 drops are toxicity in case of overdose, and may cause femoral joint pain, swelling, and dry, cracked lips. In addition, it is contraindicated in patients with vitamin D deficiency and hypercalcemia. Vitamin D3 drops are associated with certain risks, and pregnant women need to be guided by a specialist to avoid adverse effects.