SO as I was reorganizing under the bathroom sink and upon doing so I realized that a lot if not most of our medicine was out of date. I had never really thought of that Aspirin or cold medicine could be out of date. So I looked it up and when it’s out of date the effectiveness can be almost null and void. So I promptly threw it all out restocked what we needed and I am now planning on going through everything every couple months. But really allergy medicine is something I would not want to be ‘kind of working’. Just saying. Hope this helps!