Immunostimulation, by vitamin

Retinoids and the Immune System Immunostimulation by Vitamin A Gunther Dennert... 

Immunostimulant activity. Fresh plant juice, in the ration of female mice, was active in ovalbumin-sensitized mice . Water extract of the dried root, taken orally by human adults, was active. A pharmaceutical solution containing fruit bodies of Tremella fuciformis, Daucus carom root, Astragalus mongholicus root and Zizyphus jujuba fruits, honey, vitamin A palmitate, zinc sulfate, and vitamin C is claimed useful as an immunostimulant for controlling AIDS, cancer, and infections L Inotropic effect (negative). Ethanol (80%) extract of the aerial parts, at a concentration of 0.3 mg/mL, was active on the guinea pig atrium . 

Bifidobacteria and lactobacilli are considered to be beneficial bacteria. They positively influence the host and are associated with immunostimulation, improved digestion, and absorption, syntheses of vitamins, inhibiting the growth of potential pathogens, reducing cholesterol, and lowering gas production. These bacteria are classified as probiotic [ 10] and as they are indigenous to the host they can be selectively promoted by the consumption of prebiotics. 

---