What are the most important things we should do to support our immune system?
Manage your lifestyle for a strong immune system:
Supplements for basic immune support:
How much vitamin D3 does a person need to take?
Most adults need 5,000 IU daily or more, but the only way to know for sure is to do a blood test. The vitamin D3 blood test is available from your healthcare provider or through Ulta Lab Tests.