Well there no Medication for this issues till now. What ever cognitive enhancer people use is not effective in long run.
So we usually treat them with I individual training.
In your case as you know that your weakness is verbal memory, so I suggest start you start using repeatation in various ways. We can train you skills. Plz click the link below , it may help you.
Next Steps
https://www.google.co.in/amp/s/m.wikihow.com/Improve-Verbal-Memory%3famp=1