If you have trouble with concentration and memory, it is usually better to focus on improving your sleep routine, staying hydrated, and taking regular breaks rather than relying on medication. You should speak with your doctor to rule out underlying causes, such as attention disorders or nutritional deficiencies, which can often be addressed through prescription treatment, diet, or supplements. Try to avoid over-the-counter products that claim to boost memory or focus, as these are often ineffective and may cause side effects such as anxiety or insomnia.