My legs start off feeling like I have an alien in each one. Fasiculation (a brief spontaneous contraction affecting a small number of muscle fibres, often causing a flicker of movement under the skin). I have this after walking, or indeed any exercise. It's worse at night and builds up to excruciating cramp if I don't rearrange my body! It's not only in my calves but in my thighs and feet too. Fingers are also affected after trying to tighten or undo things. I'm on gabapentin but in makes me tired and I feel I've lost my sparkle. I'm 69 years young. Just started taking Andrews liver salts with has magnesium in. I've taken magnesium tablets before but not much good. Low dose of amitriptyline taken at 7pm has helped. All advice gratefully accepted.