Tilfælde af colitis (inklusive intestinal og rektal blødning, sommetider fatal, intestinal nekrose og typhliitis) er ikke almindeligt rapporteret hos patienter behandlet med pemetrexed i kliniske forsøg.
In clinical trials, cases of colitis (including intestinal and rectal bleeding, sometimes fatal, intestinal perforation, intestinal necrosis and typhlitis) have been reported uncommonly in patients treated with pemetrexed.