I Have Really Bad Restless Legs, I Was Told To

I have really bad restless legs, I was told to take Potassium, The Potassium I am taking is 99mg caplets which is only 3%. I am taking Prozac (40mg) , Gabapentin (800) 100 am 100 afternoon 600 bed time Flomax (.4mg), Lansoprazole (30), Mirapex (30mg) evening and bedtime, Nuvigil (250mg), Opana (10mg) 2Times daily 8 AM, 8PM,Oxycodone 10 mg afternoon and as needed for break through pain, Trazodone (50mg) I understand some of my medications deplete potassium. I also take Magnesium I understand the meds I take deplete it also. Any words of advise?