Medications are another common cause of memory problems. Many different medications have been associated with memory problems. Of these, medications for anxiety, insomnia, and seizure disorders have the strongest links to forgetfulness and memory loss.
Sometimes, starting a higher dose of a medication that wasn't causing problems before can contribute to a memory problem.
Prescription medications aren't the only culprit. Over-the-counter medications, as well as herbs and other so-called dietary supplements, can also cause memory problems.
Did you start a new medication or dietary supplement, or increase the dose of one you were already taking, at about the same time you experienced a change in memory?