5 Best Vitamins for Immune System Boosting

Here are the 5 best vitamins and supplements for immune system boosting, Zinc and vitamin B, C, D, E, Folic acid and Iron for a healthy immune system. Healthy habits are also the foundation of long-term healthy immunity.

A lack of required nutrition is one of the primary reason to a weak immune system. In a study published by the British Journal of Nutrition, micronutrients support the body’s immune system at three separate levels: physical barriers (e.g. skin and mucous), cellular immunity, and antibody production. Vitamins C, E and zinc assist the physical barriers. Vitamins B6, B12, C, D, E, folic acid, zinc, and selenium all support immunity at a cellular level. Finally, all these micronutrients, with the exceptions of vitamin C and iron, are essential for antibody production.

Unfortunately, people who lack access to nourishing food due to economic factors or rely too heavily on overly-processed foods. Either of these circumstances could lead to a deficiency in one or more of the vitamins and minerals required for a healthy immune system. If your diet provide sufficient levels of any the following vitamins and minerals, your immune system may not be operating at its best:

  • Zinc
  • Folic acid
  • Iron
  • Vitamin C
  • Vitamin D
  • Vitamin E
  • Vitamin A

What is Immune System?

The immune system is made up of special organs, cells and chemicals that fight infection (microbes). The main parts of the immune system are: white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow. These are the parts of your immune system that actively fight infections.
The main parts of the immune system are:
1- White blood cells
2- Antibodies
3- Complement system
4- Lymphatic system
5- Spleen
6- Bone marrow
7- Thymus.

5 Best Vitamins for Immune System Boosting

1- Nature’s Plus, Source of Life, Immune Booster


  • Adult Formula
  • Dietary Supplement
  • Gluten Free
  • Rapid Release – Essential Nutrients
  • Extended Release – Powerful Botanicals
  • Bi-Layer Delivery System
  • Vegetarian
  • Hypo-Allergenic

Nutritional Support for Overall Well-Being. Source of Life Adult Formula Immune Booster supplies powerful levels of the immune-fortifying vitamins A, C, and E, as well as defense-boosting zinc, in the fast-releasing side of a proprietary bi-layered tablet. Then powerful standardized botanicals are released from the extended delivery layer. ARA-Larix, Olive Leaf and Fruit, Andrographis, Elderberry and Echinacea offer nutritional support for a healthy immune system, while Acidophilus helps promote a balanced digestive environment and optimal nutrient absorption.

2- MegaFood, Daily C-Protect, Nutrient Booster Powder, Unsweetened


  • Real Food From Trusted Farmer Partners
  • Certified B Corporation
  • Non GMO Project Verified
  • Glyphosate Residue Free
  • Tested Free of 125+ Pesticides & Herbicides
  • NSF Certified Gluten-Free
  • Certified Vegan
  • Kosher
  • Dairy Free
  • Soy Free
  • Fresh From Farm to Powder
  • 30 Scoops
  • 30 Servings
  • With Blueberries, Cranberries & Whole Oranges
  • Unsweetened Powder Dietary Supplement

Daily C-Protect Nutrient Booster Powder contains FoodState® Vitamin C, organic blueberries and organic cranberries to provide phytonutrients which  function as powerful antioxidants. Organic astragalus and organic schisandra berry herbs are included to support your natural immune defenses.

Adults, add one level scoop to 6-8 ounces of your favorite smoothie, shake or juice, blend well and enjoy.

Daily C-Protect is bursting with real fruit flavor, so it may intensify the flavor of any beverage you add it to.

3- Now Foods, Vitamin D-3 & K-2, 45mcg (1,000 IU)


  • 1,000 IU / 45 mcg
  • Supports Bone Health
  • Plus Cardiovascular Support
  • Non-GMO
  • A Dietary Supplement
  • Kosher
  • Vitamins
  • Family Owned Since 1968
  • GMP Quality Assured

NOW combines two nutrients extensively researched for their contribution to the health of bones, teeth and the cardiovascular system. Vitamin D3 promotes Calcium transport and absorption. Recent studies indicate that Vitamin D3 may play a role in proper insulin action and glucose metabolism and has an important function within the immune system. Vitamin K is critical for the formation of a healthy, strong bone matrix. Vitamin K’s role in arterial health resolves around its ability to support proper Calcium metabolism in vascular structures. Vitamin K2 is a readily active and biologically available form of Vitamin K.

4- Now Foods, Calcium & Magnesium with Vitamin D-3 and Zinc


  • Supports Bone Health
  • A Dietary Supplement
  • Kosher – Contains Gelatin
  • Minerals
  • Family Owned Since 1968
  • GMP Quality Assured

NOW® Calcium & Magnesium Softgels include Vitamin D-3 and Zinc, offering a truly balanced blend of essential minerals. This formula supports strong bones and teeth, as well as healthy enzymatic activity. Delivered via softgel, this formula is more easily absorbed and assimilated than capsules or tablets.

5- Source Naturals, Wellness Formula, Daily Immune Support,


  • 15-Time Immune Support Winner†
  • Vitamin C Plus Over 25 Herbs, Vitamins, & Nutraceuticals
  • Dietary Supplement

WELLNESS FORMULA® delivers high-potency vitamin C plus more than 25 other vitamins, minerals, and time-tested traditional herbs to promote immune health.