Have you already downloaded the Toolkit Scoobysdad as it may help you with questions to ask.
Don't forget pen and paper to write the answers and/or take somebody with you. Two pairs of ears are better than one, specially when trying to take in all the information.
Please come back if you want advice. My only advice at this stage (assuming you are not told there is urgency) is to take your time making a decision.
Not all men get the possible side effects but you have to be aure in your own mind that you can cope with those possible results.