Losartan and irbesartan with ‘unacceptable levels’ of impurity

The TGA is investigating the contamination of some “sartan” medicines, with batches recalled from pharmacies Some batches of losartan and irbesartan products have been recalled after their sponsors advised the TGA that they had detected unacceptable levels of an azide impurity, known as azidomethyl-biphenyl-tetrazole (AZBT). AZBT is a compound that can form during the manufacture