Posted in Health Tracleer Drug Exporter UK derekclarkeedgware01 September 1, 2015 Our company is a tracleer drug exporter & supplier based in UK, tsyabri (natalizumab, biogen idec) is indicated for adults with relapsing forms of multiple sclerosis (ms). it is administered by a healthcare professional as a monthly infusion. Author: derekclarkeedgware01