Martin Pleasance Tissue Salts Comb A Insomnia 125T. Combination A can be usefully taken in addition to any other method that might have to be employed to relieve the pain from inflammation of the sciatic nerve or other forms of neuralgia or neuritis. A general tonic to be taken during times of hard work, nervous strain or mental fatigue. Tissue Salts are micro doses of minerals that help rectify mineral imbalances which may be the cause of many common ailments. Tissue Salts may assist the absorption of nutrients from food and supplements. This combination of Schuessler Tissue Salts acts as a remedy for insomnia due to muscle pain in an easy to digest tablet form.