Click the above audio summary to learn about how the nitrosamines situation began and is continuing. Nitrosamines Contamination. Investigations soon revealed other nitrosamines, like N-nitrosodiethylamine (NDEA), in different sartan drugs, including losartan and irbesartan (1,4). Both agencies have established acceptable daily intake limits for various nitrosamines and mandated confirmatory testing if a risk is identified (3, 12). • Srinivasan, A. and Lambert, C. Nitrosamides–Should They Be Treated the Same as Nitrosamines?