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Kids' Favorite
2x4 Kids Multi
2x4 Kids Multi
Support your child's growth,
bone health and immunity
Peer-Reviewed Clinical Study
2x4 Resilient-C
2x4 Resilient-C
Builds a strong
immune system
Clinically Studied
2x4 Immune Strength
2x4 Immune Strength
Optimize your mood, healing, and immunity
2x4 Total Immunity
2x4 Total Immunity
Enhances your body’s immune response
Best Seller
2x4 Cold Reducer
2x4 Cold Reducer
Build resistance to
colds and flu