Hi, memory and concentraion skills are attained by practice, medicine usually doesn't help unless you have a psycological problem. If have poor sleep, any signs of easy fatigubility, poor intrest in things, unabke to maitain relations. So kindly consult a psychiatrist to help you.

Hi,,, Some time  memory , lack of concentration are due to anxiety symptoms. Due to someone's anxiety he cant register the information which iself depends on how much attentive you are while reading? It may be part of ADHD which is adult continuum of childhood onset ADHD . Anyway drug and counselling are useful in any case . Consult a psychiatrist and good luck.