Kev sib deev tsis tuaj yeem ua rau muaj menyuam. Yog tias koj cev xeeb tub 6 lub hlis, kev sib deev yuav tsis ua rau mob hnyav. Tsis tas li ntawd, yog hais tias lub sij hawm mus txog, nws muaj tseeb hais tias cov prostaglandin muaj nyob rau hauv phev tuaj yeem ua rau contractions thiab txhawb zog, qhov no yog hu ua "Italian trigger". Lub contraindication rau kev sib deev tsuas yog tshwm sim yog tias muaj kev pheej hmoo ntawm kev ua haujlwm ntxov ntxov.