Been a sufferer of anxiety on and off for many years. Had every symptom going including: tingly face, tingly scalp, tingly hands/arms, lump in throat, not able to take a full breath, tight chest, knotted feeling in shoulders/neck, lethargy, gerealised panic, loss of appetite, burning sensations in osephagus, acid reflux, constipation, jaw clenching, chest pains all of which got investigated and came back zero. Had every test going from brain scan to chest xrays and many more. It was only after endless tests that someone suggested anxiety but this was at least 18 years ago. I think now anxiety might have been the first assumption with all the signals I was giving off. Tried many different approaches and a couple of anti depressants with bad to average results. I had a good few years where it diminished to a manageable state but last year after a particularly bad bout of anxiety I started searching the internet for different ideas on why this was happening. I really didn't want to go down the anti depressant route as I wasn't depressed. My symptoms constantly threw up magnesium deficiency and so amongst other things I started taking a supplement daily. I saw a herbalist and discussed my symptoms, he asked me if I was on magnesium and I told him I was but wasn't feeling any different and I'd been taking it 6 weeks by this time. He told me to keep taking it as it can take 3 to 4 months before you feel any benefit. Of all the supplements I've tried magnesium is the only one I've taken daily for 4 months now. I left all others by the wayside and stuck with magnesium as the symptoms of magnesium deficency so matched how I was feeling. I can't say as I felt it happening as it was so gradual but I can honestly say I don't have anxiety anymore, it lifted too slowly to notice until one day i just thought, wow my symptoms have gone completely. Some days before a period I can feel a bit twitchy and my sleep goes haywire but still no anxiety. I have a real faith in the magnesium. I checked with my doctor before taking it and he said it wouldn't do me any harm. Useful as ever but we won't go there. I don't know what may happen in the future but at the moment I am enjoying being symptom free and making the most of it. I personally believe it has helped me so would like to recommend it to others but do your research and come to your own conclusion. (ps it did give me mild stomach cramps, wind and other unpleasant toilet symptoms but that eased after about 2 weeks). I hope this helps someone.