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Side effects

Are there side effects, and if so, which ones?

Side effects are not excluded. Under mistletoe therapy, however, rarely any significant adverse effects have been observed under intended use. If the dosage is too high, so-called excessive local reactions with a diameter of more than 5 cm may occur. In this case, treatment should only be continued after symptoms have subsided and in a reduced dose (next lower dose). The same applies to strong general reactions such as an increase in body temperature to over 38°C. A medical examination by the doctor is recommended.

How can local reactions be distinguished from side effects?

A slight reddening and itching at the injection site as well as a certain increase in body temperature are expected reactions. Local inflammatory reactions at the subcutaneous injection site up to a maximum diameter of 5 cm and an increase in temperature up to 38°C are considered "normal".

However, if the reactions exceed these values or the patient does not tolerate them, this is considered a side effect and a dose reduction after the symptoms have subsided is appropriate.

Are there any interactions with other therapies or drugs?

So far, no clear interactions are known. Mistletoe therapy can also be performed during chemo-, radiotherapy or (anti-)hormone therapy. In laboratory experiments on tumour cells and in practice, no negative influence by mistletoe preparations could be found in the usual chemo- and (anti)hormone therapeutics, and no impairment of the efficacy of chemotherapeutics has been known to date in clinical applications.

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