På grund af den forøgede risiko for trombose hos cancerpatienter og muligheden for accelereret metabolisme af warfarin med kortikosteroider, anbefales der imidlertid omhyggelig monitorering af INR- værdier ved kombinationsbehandling med thalidomid og prednison indtil en uge efter denne behandlings ophør.
However, due to the increased risk of thrombosis in cancer patients, and a potentially accelerated metabolism of warfarin with corticosteroids, close monitoring of INR values is advised during thalidomide-prednisone combination treatment as well as during the first weeks after ending these treatments.