Vyas 70mg Capsules – Lisdexamfetamine Mesilate Price in Pakistan Vyas 70mg Capsules contain lisdexamfetamine, a central nervous system (CNS) stimulant. Lisdexamfetamine is a prodrug that is converted to dextroamphetamine in the body. It is prescribed for Attention Deficit Hyperactivity Disorder (ADHD) and, in adults, for moderate to severe binge-eating disorder (BED).