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The Immune System Company invites you to Choose the way you age.

The Immune System Company®

Leading the way in immune system science for more than 25 years*

Science you can trust

Help your body recognize, respond to, and remember potential health threats by supporting your immune system with vitamins (A, B6, B12, C, D), minerals (selenium, copper, zinc), and herbs.

Check out the Science behind 4Life's products!

What are transfer factors?

The Immune System Company

When you feel healthy, you can live your best possible life. To do this, you need a vigilant immune system. That’s why people are making the smart choice with 4Life products. 4Life offers numerous delivery methods, including capsules, chewable tablets, juice beverages, powders, and topical products.

Preferred Customers Save Big

  • Satisfaction Guarantee – 30-day money-back guarantee
  • Loyalty Program Benefits Earn Loyalty Points through our Loyalty Program
  • Instant Discount – Receive a 25% Instant Discount on qualifying orders
  • Share What You Love – Earn 25% cash back when you share 4Life products with others
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