pleuran + zinc + vitamin D3

A fixed-dose combination dietary supplement containing **pleuran** (a beta-1,3/1,6-D-glucan polysaccharide derived from Pleurotus ostreatus), **zinc** (an essential trace element), and **vitamin D3** (cholecalciferol). Pleuran acts primarily as an **immunomodulator**, stimulating or regulating the body's immune responses. Zinc contributes to immune function, DNA synthesis, and antioxidant defense. Vitamin D3 is a fat-soluble vitamin essential for calcium metabolism, bone health, and immunoregulation. Such combinations are considered for supporting immune function and preventing or treating deficiencies, and in at least one clinical study, a similar pleuran-based combination (though typically with vitamin C rather than D3) was evaluated for reducing the frequency and duration of respiratory exacerbations in chronic obstructive pulmonary disease (COPD) patients[1].