Aspirin is not recommended for women undergoing IVF.

The role of aspirin in women with infertility is controversial and the evidence is inconsistent; some studies have reported benefits in women undergoing IVF whilst others have not. An important gap in the literature was the question of when to start and when to stop aspirin and how long should aspirin be given for. In a 2007 systematic review on the effectiveness of aspirin on IVF outcomes involving 7 trials and 1449 participants, the authors’ conclusions was that the use of low-dose aspirin for women undergoing IVF could not be recommended due to lack of adequate trial data (Poustie et al., 2007). The current update includes 13 trials and 2653 participants and addresses the same question (Siristatidis et al., 2011).