Limited information indicates that maternal doses of trihexyphenidyl up to 4 mg daily together with haloperidol or risperidone did not produce any adverse effects in breastfed infants. Long-term use of trihexyphenidyl might reduce milk production or milk letdown, but a single dose is not likely to interfere with breastfeeding. The prolactin elevating effect of concurrent antipsychotic agents might counteract any prolactin lowering effect of trihexyphenidyl. During long-term use, observe for signs of decreased lactation (e.g., infant insatiety and poor weight gain).
有限的信息表明，母亲每日服用高达4毫克的苯海索，同时服用氟哌啶醇或利培酮，对母乳喂养的婴儿未产生任何不良反应。长期使用苯海索可能会减少乳汁分泌或乳汁排出，但单次剂量不太可能干扰母乳喂养。同时使用的抗精神病药物的催乳素升高作用可能会抵消苯海索的任何催乳素降低作用。在长期使用期间，观察是否有泌乳减少的迹象（如婴儿不满足和体重增加不佳）。
