What does vitamin d400iu mean?

Vitamin D400IU is a vitamin D supplement that provides a daily dose of vitamin D.. Vitamin D is one of the nutrients needed by human body, which can help absorb calcium and phosphorus, promote the healthy development of bones, and maintain the normal operation of important systems such as immune system and cardiovascular system. However, few foods contain enough vitamin D, so many people need supplements to ensure adequate nutrition.

Vitamin D400IU supplements are usually sold in the form of soft capsules, which can be quickly absorbed and play a role in the blood. It is recommended that adults supplement 400-800IU of vitamin D every day, and children and the elderly need more. Before taking vitamin D400IU (or any vitamin D supplement), it is best to consult a doctor or pharmacist to ensure a safe and correct dose.

Under normal circumstances, people can get enough vitamin D through diet and daily sunlight. However, bad weather, living area, skin color and other factors may affect the human body's intake of vitamin D, so vitamin D400IU can be used as a convenient and reliable supplement to ensure adequate nutritional intake. However, it should be noted that too high a dose of vitamin D may cause harm to the body. It is best to master the correct dose on the advice of a doctor or pharmacist.