Immune Health Supplements: Reviews by Dr. Bell

Immune health is more nuanced than "boost the immune system." A balanced immune system is what you want — one that responds quickly when there is a real threat, and stays quiet when there is not. Both ends of the spectrum cause problems. Underactive immunity means more colds, more infections, slower recovery. Overactive immunity means autoimmunity, allergies, and chronic inflammation.

Most immune supplements do one of three things: provide raw materials the immune system needs (vitamin C, zinc, vitamin D, vitamin A), support the gut where about 70 percent of immune cells live, or modulate the immune response with mushroom extracts, herbs, or amino acids. The right pick depends on whether you are trying to prevent, knock down an active infection, or rebuild after one.

This page collects every Designs for Health immune support product I have reviewed — what it is for, when to use it, how to dose it, and who should be careful. Most of these are best used at the first sign of getting sick rather than year-round, but a few are foundational and worth taking daily. Always check with a healthcare provider before starting an immune supplement, especially if you have an autoimmune condition or take immunosuppressive medication.

Featured Reviews

Reviews in this category are being added as Dr. Bell publishes them. Check back soon, or browse the full review library on the homepage.

• Periobiotic Silver Toothpaste — Fluoride-free toothpaste with colloidal silver, xylitol, and CoQ10 — for bleeding gums, canker sores, and mouth irritation.
• Zinc Supreme — 30mg zinc bisglycinate + malate with taurine and B6 — for frequent infections, slow wound healing, adult acne, and immune support.