The story is about a scientist who makes a drug that gives him incredible telepathic abilities which he uses to help others. He later gives the drug to his girl friend so she can help him in his adventures.
A book that sounds similar is The Invisibles by Bernhardt J Hurwood, published in the 70's. The protagonist gets telepathic powers from an overdose of an experimental hallucinogen. He meets a women with telepathic powers and they go against evil doers