It hasn't been studied. You will have to use your best judgement...I would definitely wait through the 1st trimester then decide if you want to use PERIODICALLY during 2nd and 3rd trimesters. As a pharmacist, this would be my advice for a patient.
Good luck & congrats on your pg!
~Melanie~
Jadon born 11/23/05
Justin born 1/17/04
Jory born 4/9/94
" Take care of your body like it will last a lifetime. Take care of your soul like it will last for eternity"