Take Urticalcin as a calcium supplement. Silica can be easily supplied by the hemp nettle {Galeopsis). To increase immunity and resistance to respiratory diseases Usneasan has proved invaluable. This remedy is made from lichen (Usnea barbata, also known as larch or beard moss) which grows on alpine coniferous trees. Its lichen acids combined with other remedial substances have proved to be very helpful. Petasites, made from butterbur, and Viscum album, from mistletoe, are also effective remedies with tonic properties. Other herbs and plants suitable for promoting resistance are mentioned in the section on natural antibiotics.

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