For this purpose a small linen bag is filled with flowers, briefly dipped in hot water and squeezed to press out any excess liquid before it is applied to the aching ear. It is recommended to support the external treatment by drinking Elder-flower tea at the same time. Elder-berries are aperient and diuretic. They are also full of vitamins and thus strengthen and tone the whole body. In particular, they are a good source of vitamin J, which is specifically indicated in the treatment of pneumonia.
Elderberries are also valuable as an alterative remedy in rheumatic conditions.
However, the fresh berries are thought to be slightly poisonous and in some instances have been reported to cause nausea. Thus, they should always be dried or cooked for consumption. The leaves and bark are no longer used in modern practice. However, they are included here for the sake of completion. Once upon a time, Elder leaves were used both internally and externally.