1. Non-toxic solid pharmaceutical composition for oral administration, to reduce the frequency or prevent severe headaches, containing one or more cysteine compounds from the group of L-cysteine, D-cysteine and N-acetylcysteine as active agents, characterized in that said cysteine compound contained in combination with one or more additional active agents, at least one of which is selected from the group of cystine, glutathione and methionine, while the composition further comprises one or more pharmaceutical additives, including one or more non-toxic carriers, that provide controlled release of these active agents either to saliva for at least 5 minutes in the oral environment or to the stomach for at least 15 minutes in the stomach .2. A composition according to claim 1 for reducing the frequency or preventing migraine or cluster headaches, in particular cluster headaches. The composition according to claim 1, characterized in that it is presented in the form of a powder, tablet, lozenge, capsule or chewing gum. A composition according to claim 1, characterized in that the active agents are selected from L-cysteine and one or more of cystine, glutathione and methionine, preferably from L-cysteine and one of the agents listed after it, the most suitable of which is glutathione. A composition according to claim 1, characterized in that the active agents are selected from one or more cysteine compounds and glutathione, preferably from one cysteine compound and glutathione, where L-cysteine is the most suitable of cysteine compounds. Composition for any1. Нетоксичная твердая фармацевтическая композиция для перорального введения, для снижения частоты или предотвращения сильных головных болей, содержащая одно или более цистеиновых соединений из группы L-цистеина, D-цистеина и N-ацетилцистеина в качестве активных агентов, характеризующаяся тем, что указанное цистеиновое соединение содержится в комбинации с одним или более дополнительными активными агентами, по меньшей ме
