Echinacea may enhance white blood cells and improve immunity to colds and influenza. Other products to improve general respiratory protection and immune system to common ailments could include:
1.Solgar's Beta Glucans complex to enhance immune system.
2.Solgar's Olive leaf or Elderberry (also Sambucol) for viral infections
3.Vitamin D needs optimising to improve inate immune function
4. Vitamin C and Zinc
5. Rhinophase or other Propolis preparations