We use self meds, including Motrin, Senokot, and Materna. They are kept at the pt's bedside, after the pt is educated about use and recording when the dose is taken. They are only given enough for two nights. I don't suppose they are technically "secure". However, pts are allowed to take their home meds and keep them at their bedside also. It hasn't been an issue where I work.
I don't suppose there is a big demand for maternal vitamins and stool softeners.