Zentel 400 MG Tablet is an antiparasitic medicine that is used to treat parasitic infections caused by tapeworms. It works by decreasing the energy sources of the parasite (organisms that live in other organisms for survival), making it weaker and eventually killing it. Zentel 400 MG Tablet may cause common side effects such as headache, dizziness, nausea, vomiting, hair loss, fever, etc. Consult your doctor if these symptoms stay for a long time or if they become severe.