I have severe anxiety and also for past few months painful twitching calves. Dr has checked iron and vit d,ok. Quinine no effect. I have had tips on here that I may need magnesium so I have researched on net. I fo have a lot of symptoms, legs, headaches, nausea, fatigue, etc but many people who write these articles profit by their books or selling magnesium products. Dr Carolyn dean had her licence to practise revoked. I,m confused. Btw I have recently stopped taking ppi for acid. Was on it 5 years. Does anyone think mag. Supplements worthwhile?