Cholecalciferol, also known as vitamin D3, is a crucial nutrient for the human body. It helps in the absorption of calcium and promotes bone growth and development. However, there are other names for cholecalciferol that you may come across. Some of the synonyms for cholecalciferol include calcidiol, calcifediol, and 25-hydroxyvitamin D3. These terms refer to different forms of vitamin D that are produced in the liver and kidneys. Other synonyms include ergocalciferol, also known as vitamin D2, which is found in plant-based foods. No matter what the name, vitamin D plays an important role in maintaining overall health and wellbeing.