I have had a 40 year history of digestive issues including giardia infection and duodenal ulcer 35 years ago and some subsequent tooth infections. As a result, I have difficulty maintaining good acid-alkaline balance. Years ago, I used to avoid citrus or anything acid, but that would leave me open to liver congestion and give me severe headaches. Then I discovered that I could gradually add lemon or lime back into my diet and the natural decongestant effect would resolve most of my congestion and headaches. I have done quite well mostly with lime on my salad and limade to drink. However, I do have a tendency to over-do things, and so it is with the lime. When I have had too much lime, I get this condition of being over-acid, with difficult concentration: Common acid debility producing nervous exhaustion, debility mental or physical. Stomach symptoms from sour food and drink, but seems to crave juicy things, thirst for cold milk, distension and fermentation in bowels, apathetic, indifferent, thinking difficulty, confused, could have headache, pain in eyes, back, limbs, aching in umbilical area, loud rumbling, distension with fermentation, painless loose stools, anxious about frequent urination, weakness in chest, great debility, sleepy, chilly or slightly hot, worse exertion. For me the key is slight itching between fingers or on hand.
These are symptoms of Phosphoricum Acidum 12c. I take 12c potency, several doses in water for this condition - bears repetition. Amazon identifies this as "Homeopathic Medicine for Concentration", also for "premature grey or falling hair" - and offers potency's of 6c, 9c, 12c, 30c, 200c, 1M.
Amazon customer reviews for Phosphoricum Acidum 30c for ADD:
By Paige on July 15, 2015
I have ADD and am on medication but it doesn't always help me to completely focus at work. I had heard about this cell salt helping with focus and decided to give it a try. I have used it a few times now, only taking 1 or 2 each time and combining it with my medication I feel more focused then I ever have! I admit I was skeptical and figured it wouldn't work, but I was wrong!
By S. Hewitt on November 29, 2014
I have ADD and this remedy has calmed the chaos every time.