Tanzol selectively blocks the glucose uptake by an adult helminthes in the intestine & their tissue dwelling larvae. Inhibition of glucose uptake leads to endogenous depletion of glycogen stored within the parasite. This in turn causes a decrease in the formation of adenosine triphosphate. By this mechanism, the drug slowly depletes the energy levels of the susceptible parasites.

Use of large doses of Tanzol can cause adverse effects like allergic reactions, raised liver enzyme values, alopecia, bone marrow depression etc. Side effects of Tanzol include transient abdominal pain and diarrhea, dizziness, nausea, constipation, dry mouth etc.