No meds have shown to help with memory directly. But, reducing anxiety can help with memory and brain fog. Brain fog can be a manifestation of anxiety.

There are plenty of meds that can reduce anxiety. Benzos (clonazepam, Ativan, Xanax, etc) have questionable use due to withdrawal and other issues. They are not good for brain health. SSRI's, SNRI's, tricyclics (ametriptyline is common for PCS) and others are used successfully even though they all have side-effects. Cymbalta is just one of the many meds.