Here we deal with the possible harmful
interaction between normal
drugs (which you are probably taking for a particular therapy) and
herbal active constituents, which are almost the same of those present in drugs and will consequently multiply their effect.
If you occasionally use phytotherapic remedies or you make a “light” use of them, that is you prepare infusions, macerated herbs ecc…, then you will not have great problems. The problem arises in case of prolonged use and dried extracts, nux vomica and Chinese herbs.
However, be careful about
deadly pairing (
starting from analysing this article). The most dangerous are the following:
If you are taking
aspirin or other anticoagulants, - DO NOT use
Ginkgo Biloba – since it would increase the anticoagulant effect by causing a risk of haemorrhage.
If you are taking
anticoagulants such as warfarin – DO NOT use
garlic often and repeatedly, DO NOT use
Dong Quai (angelica sinensis), DO NOT use
Danshen (Chinese sage) – since, in this case too, you could risk haemorrhages.
If you are taking
corticosteroids or
diuretics – DO NOT take
liquorice, since in the first case it would cause high blood pressure while, in case of diuretics, it would cause water retention.
If you are taking
corticosteroids, anticoagulants,
oral antidiabetics (such as chlorpropamide or metformin) or
estrogen hormones (like those used to treat menopause) – DO NOT use
Ginseng – since associated with corticosteroids administration, it would cause very serious side-effects too; associated with anticoagulants it would cause risks of thrombosis; associated with antidiabetics it would cause glycaemia and finally associated with estrogens administration it would increase their effects.
If you are taking
antidepressants (such as fluoxetine or paroxetine) – DO NOT take
hypericum –
since it would cause very serious side-effects. In case of association of
cyclosporine with hypericum there would be rejection effect.
It’s reported to have interactions with indinavir, warfarin, digoxin and theophylline. Do not use in case of
oral contraceptives intake too since they could loose their effect (cases of recovery of periods are reported).
If you are taking
antidepressants – DO NOT use
Yohimbina – since it would cause high blood pressure.
The list of harmful interactions with drugs is much longer. These are only the most deadly pairings. Thus, it’s always better to consult the doctor to explain him the phytoterapic therapy you want to start.