The concomitant use of herbal medicines and pharmacotherapy is wide spread. We have reviewed the literature to determine the possible interactions between seven popular herbal medicines (ginkgo, St John's wort, ginseng, garlic, echinacea, saw palmetto and kava) and conventional drugs. Literature searches were performed using MEDLINE, Cochrane Library and EMBASE and we identified 128 case reports or case series, and 80 clinical trials. Clinical trials indicate that St John's wort (Hypericum perforatum), via cytochrome P450 (CYP) and/or P-glycoprotein induction, reduces the plasma concentrations (and/or increases the clearance) of alprazolam, amitriptyline, atorvastatin, chlorzoxazone, ciclosporin, debrisoquine, digoxin, erythromycin, fexofenadine, gliclazide, imatinib, indinavir, irinotecan, ivabradine, mephenytoin, methadone, midazolam, nifedipine, omeprazole, oral contraceptives, quazepam, simvastatin, tacrolimus, talinolol, verapamil, voriconazole and warfarin. Case reports or case series suggest interactions of St John's wort with adrenergic vasopressors, anaesthetics, bupropion, buspirone, ciclosporin, eletriptan, loperamide, nefazodone, nevirapine, oral contraceptives, paroxetine, phenprocoumon, prednisone, sertraline, tacrolimus, theophylline, tibolone, tryptophan, venlafaxine and warfarin. Ginkgo (Ginkgo biloba) decreases the plasma concentrations of omeprazole, ritonavir and tolbutamide. Clinical cases indicate interactions of ginkgo with antiepileptics, aspirin (acetylsalicylic acid), diuretics, ibuprofen, risperidone, rofecoxib, trazodone and warfarin. Ginseng (Panax ginseng) may interact with phenelzine and warfarin. Kava (Piper methysticum) increases the clearance of chlorzoxazone (a CYP2E1 substrate) and may interact with alprazolam, levodopa and paroxetine. Garlic (Allium sativum) interacts with chlorpropamide, fluindione, ritonavir and warfarin; it also reduces plasma concentrations of chlorzoxazone (a CYP2E1 probe). Echinacea might affect the clearance of caffeine (a CYP1A2 probe) and midazolam (a CYP3A4 probe). No interactions have been reported for saw palmetto (Serenoa repens). Numerous interactions between herbal medicines and conventional drugs have been documented. While the significance of many interactions is uncertain, several interactions, particularly those with St John's wort, may have serious clinical consequences.

https://www.iqb.es/cbasicas/farma/farma06/plantas/interacciones%20con%20farmacos.pdf

Interactions between herbal medicines and prescribed drugs: an updated systematic review.

Medicinal plants and their secondary metabolites are progressively used in the treatment of diseases as a complementary medicine Inflammation is a pathologic condition that includes a wide range of diseases such as rheumatic and immune-mediated conditions, diabetes, cardiovascular accident, and etcetera We introduce some herbs which their anti-inflammatory effects have been evaluated in clinical and experimental studies Curcuma longa, Zingiber officinale, Rosmarinus officinalis, Borago officinalis, evening primrose, and Devil's claw are some of the introduced medicinal herbs in this review Since the treatment of inflammation is not a one-dimensional remedy, this review tries to reach a multidimensional therapeutic approach to inflammation with the help of herbal medicine and modification in lifestyle

/pdf/review-of-anti-inflammatory-herbal-medicines-16zts9iq8a.pdf

Review of Anti-Inflammatory Herbal Medicines

This article provides an overview of the clinical evidence of interactions between herbal and conventional medicines. Herbs involved in drug interactions – or that have been evaluated in pharmacokinet

/pdf/interactions-between-herbs-and-conventional-drugs-overview-1rt5nnx52l.pdf

Interactions between Herbs and Conventional Drugs: Overview of the Clinical Data

http://www.medicinaycomplejidad.org/pdf/historia/plantefec.pdf

Risks and benefits of commonly used herbal medicines in Mexico

The main scientific discoveries on Aloe vera published mainly in the last three decades are presented in this work. After describing Aloe from a botanical point of view, the papers related with the chemical composition of different parts of the leaf of Aloe, particularly those in which the gel is described and are presented in a synthetic manner. The chemical analyses reveal that Aloe gel contains mannose polymers with some glucose and other sugars, among which the most important is Acemannan. Besides these, other components such as glycoproteins, enzymes, amino acids, vitamins, and minerals are described. Different factors also affecting the chemical composition of the gel, such as species and variety, climatic and soil conditions, cultivation methods, processing and preservation, are enumerated and discussed. On the other hand, the main therapeutic applications have been revised and the possible damaging effects of Aloe are also commented upon. A special emphasis is placed on the biologically active com...

Aloe vera as a Functional Ingredient in Foods

ContextPatients often combine prescription medications with herbal and dietary substances (herein referred to as herbal medicines). A variety of potential adverse herb-drug interactions exist based on the pharmacological properties of herbal and prescription medications. ObjectiveTo determine the incidence of potential and observed adverse herb-drug interactions in patients using herbal medicines with prescription medications. DesignConsecutive patients were questioned about their use of herbal medicines in 6 outpatient clinics. Patients report- ing use of these products provided a list of their prescription medications, which were reviewed for any potential adverse herb-drug interactions using a comprehensive natural medi- cine database. Any potential adverse herb-drug interactions prompted a review of the patient's chart for evidence of an observed adverse herb-drug interaction. Main Outcome MeasureThe rate of potential and observed adverse herb-drug interactions. ResultsEight hundred four patients were surveyed, and 122 (15%) used herbal medicines. Eighty-five potential adverse herb- drug interactions were found in 49 patients (40% of herbal medi- cine users). Twelve possible adverse herb-drug interactions in 8 patients (7% of herbal medicine users) were observed. In all 12 cases, the severity scores were rated as mild, including 8 cases of hypoglycemia in diabetics taking nopal (prickly pear cactus). ConclusionsA substantial number of potential adverse herb-drug interactions were detected and a small number of adverse herb-drug interactions observed, particularly in dia- betics taking nopal. Screening for herbal medicine usage in 804 patients did not uncover any serious adverse interactions with prescription medications. (Altern Ther Health Med. 2007;13(2):30-35.) original research

Adverse interactions between herbal and dietary substances and prescription medications: a clinical survey.

The malady’s antiquity is fur-ther evidenced by the plethora of remedies reportedly used by aboriginal peoples for relief from the pain of “rheumatism.” The Native American people known as the Ohlone, formerly inhabit-ing the central coastal region of California where our research was conducted, utilized at least 12 different herbs for painful joints. Among these Ohlone medicinal plants, we selected sting-ing nettle,

Stinging nettle cream for osteoarthritis.

Canary Seed in Diabetes: Sweet Harmony?

https://scholar.dominican.edu/cgi/viewcontent.cgi?article=1007&context=natural-sciences-and-mathematics-faculty-scholarship

Lipophilic stinging nettle extracts possess potent anti-inflammatory activity, are not cytotoxic and may be superior to traditional tinctures for treating inflammatory disorders.

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Adverse interactions between herbal and dietary substances and prescription medications: a clinical survey.

Stinging nettle cream for osteoarthritis.

Canary Seed in Diabetes: Sweet Harmony?

Lipophilic stinging nettle extracts possess potent anti-inflammatory activity, are not cytotoxic and may be superior to traditional tinctures for treating inflammatory disorders.