Hey Shelley, I found EmergenC @ at our local health food store but I also saw it at Walmart tonight. My muscle weakness and fatigue became worse after the last flush. But, I have improved some in the last couple of weeks. I just hurt to my bones and my muscles twitch and feel like they want to cramp. I used to be really athletic so this is really eating my lunch. I've only had these symptoms for about 6 weeks. April was a rough month. Do you think I should do another flush now or wait until i build my electrolytes? I don't want to overburden myself but I want to get well as we all do. God bless you.