That should be fine. So long as the models don't use any existing trademarks (you have been making your own brands, so this should not be an issue) nor explicit verbiage or imagry (real-life sexual well-being products use only medical terminology and have no explicit imagry on the packages as far as I know, so I assume you will be mimicing this practice as well, and therefore should not be an issue)

EDIT: Actually, I have seen some condom packages with rather racey iimagery on them. I would recommend avoiding this style of provocative sexual imagery on the products. To be clear, condom packages etc should be fine, so long as they are the medical/neutral style.