Alternative meds for psycotic drugs

My son is 25 and he has been taking psycotic drugs since the year 2000. First he was on risperdol, then zyprexa and now geodon and paxil cr. He has been having headaches and problems sleeping. When he takes the meds, he will sleep then after it wears off he can't go to sleep. He then has headaches and seems irritable. He tried of doctors and taking meds. He wants to try something natural. Can you help?