hello...pretty simple couple of questions...my mother was just prescribed 5mg IR ...also, she has left over 5mg hydrocodones (watson 853)....if she feels that one of the IR oxys isnt easing her pain 100%, is it safe for her to take another IR oxy AND/OR the hydrocodene as well/instead..? if yes, can she do so right away, or should she wait a certain amount of time? i.e. 15,30 minutes? thanks for your time.