Vitamin A for Vaccines & Viruses (including Measles!)

Vitamin A plays a crucial role in immune support during infections and when taking vaccines, with high-dose protocols (50,000-200,000 units daily for 2 days) recommended by the CDC for measles treatment based on age, and can also be beneficial when taken before live virus vaccines like MMR; however, it should only be used short-term as long-term use can cause hypervitaminosis A, and it should not be used during pregnancy or by individuals with severe liver or kidney disease.