Immunity, Energy & Lungs

This section covers immune and whole body health. It is split into Immune Support, Energy and Longevity, Lung and Respiratory, and Herpes and Viral Support.

We check ingredients such as vitamin C, vitamin D, zinc, elderberry, NAD precursors and lysine against human study doses, flag overstated claims, and review side effects and refund terms.

Ask your doctor before use if you have an autoimmune condition, take medication, or are pregnant. Breathing problems need medical care.

Can supplements boost your immune system?

For healthy people, there is little evidence that supplements boost immunity beyond normal. A deficiency in nutrients such as vitamin C, vitamin D, or zinc can weaken immune function, but most people get enough from food. Sleep, exercise, vaccines, and not smoking have stronger support. Large doses of some nutrients can cause side effects.

Source: Using Dietary Supplements Wisely, NCCIH