Your skin produces vitamin D when in direct sunlight or indoor tanning devices, but that’s not an ideal solution for obvious reasons. Choose a potent vitamin D3 supplement from Life Extension instead.

Note The number of drops may vary based on temperature and altitude. Caution Individuals consuming more than 2, 000 IU/day of vitamin D (from diet and supplements) should periodically obtain a serum 25-hydroxy vitamin D measurement. Do not exceed 10, 000 IU per day unless recommended by your doctor. Vitamin D supplementation is not recommended for individuals with high blood calcium levels. Warnings KEEP OUT OF REACH OF CHILDREN. DO NOT EXCEED RECOMMENDED DOSE. Do not purchase if outer seal is broken or damaged. When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.