Eftersom reproduktionsforsøg hos dyr ikke altid kan forudsige det humane respons, bør Efient kun anvendes under graviditet, hvis den potentielle fordel for moderen opvejer den potentielle risiko for fostret.
Because animal reproduction studies are not always predictive of a human response, Efient should be used during pregnancy only if the potential benefit to the mother justifies the potential risk to the foetus.