Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Leg cramps is a very disturbing condition, I understand. I suppose you have checked at your doctor the reason this happens to you. By that I mean electrolyte level, uric acid level, uremia, creatinemia, hepatic enzymes, your blood sugar level etc. So have a full examination and a neurologist visit to find the cause. If all the tests results are ok, and the doctor supposes it s all psycological than continue with Quetiapine (Seroquel). Try to have physical activity every day, consume lots of calcium and kalium rich foods and drink lots of water everyday. Voltaren can ease symptoms and you may use it also. All the best.