Review A safety assessment of fixed combinations of acetaminophen and acetylsalicylic acid, coformulated with caffeine.
Bach PH, Berndt WO, Delzell E, Dubach U, Finn WF, Fox JM, Hess R, Michielsen P, Sandler DP, Trump B, et al. Ren Fail. 1998 Nov; 20(6):749-62.