Theoretically, it is possible that diphenhydramine could affect a woman's milk supply, since the medication can suppress prolactin (a hormone important for breast milk production). However, this is probably not an issue for women who are well-established with breastfeeding.
PRO is a strategic communications firm helping high profile individuals, professional teams, national governing bodies, corporations and non-profits within the sports industry build their brands through the media.
professional. 1  a person practicing a profession. 2  a person who engages in some art, sport, etc. for money, esp. as a means of livelihood, rather than as a hobby. pro (noun) 3  a person who does something with great skill.