Compilation of herbal plants (description, geographical distribution, taxonomy, line drawings), biodiversity and herbarium.

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Description of herbal and T&CM research, searchable publication and process from medicinal plant discovery to clinical trial in producing a high-quality registered herbal drug.

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Definition and description of therapies, policy, training and education, research in the practise of (T&CM) and integrated medicine system.           

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How Evening Primrose interacts with Antipsychotic medications

Interaction type: Interactions

Interaction rating: Case Study Support

Human case reports described evening primrose oil having caused schizophrenia to worsen in three individuals. This may alter the dose needed for treatment of these medications. A later study disagreed with these observations. Use with caution. (1) (2)

These drugs include clozapine, olanzapine, quetiapine, chlorpromazine, prochlorperazine, perphenazine, haloperidol, thiothixene, pimozide, risperidone, lithium, ziprasidone, thioridazine, fluphenazine, trifluoperazine, molindone, mesoridazine, loxapine


  1. View Abstract: Vaddadi KS. The Use of Gamma-linolenic Acid and Linoleic Acid to Differentiate Between Temporal Lobe Epilepsy and Schizophrenia. Prostaglandins Med. Apr1981;6(4):375-79.
  2. View Abstract: Joy CB, Mumby-Croft R, Joy LA. Polyunsaturated fatty acid (fish or evening primrose oil) for schizophrenia. Cochrane Database Syst Rev. 2000;(2):CD001257.

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Consumer Data

Consumer data including medicinal herbs, dietary supplement monographs, health condition monographs and interactions and depletions.                                    

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