Natural immune stimulant and vitamin B supplement. Fish in Aquaria are exposed to elevated risk of infection by pathogens, bacteria and germs resulting in the increased likelihood of disease transmission. This often leads to diseases of weakened and stressed fish. If these are diagnosed too late, it may lead to fatalities for the fish and to the spreading of disease in the aquarium. According to latest scientific research, beta-glucan has proven especially effective in the stimulation of the immune system. Tropic Marin® IMMUVIT contains beta-glucan of brewer’s yeast in a concentrated form.