People who are vitamin D3 deficient are recommended to take this vitamin D3 oral solution. This nutritional supplement must be taken regularly along with spending some time in the sun as the skin naturally produces this vitamin when it is exposed to sunlight. There are many benefits associated with this supplement, such as reduced inflammation, and strengthened bones, muscles, and immunity. People who have depression are also recommended this medicine because the optimum vitamin D3 level in the body also improves mood.