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Bring back lost lover No more debt. Pass DA first time. The effects of herbal medicine in relation to anaesthesia. It's natural, it's harmless. Problems with herbal meds. Disclosure of use to healthcare practitioner Pharmacokinetics and pharmacodynamics Systemic toxicity
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Bring back lost lover No more debt Pass DA first time
Problems with herbal meds • Disclosure of use to healthcare practitioner • Pharmacokinetics and pharmacodynamics • Systemic toxicity • Multiple adverse effects • Manufacturing standards
Systemic effects of herbal meds • CVS • CNS • LIVER • Immune system • Endocrine
Aloe Vera Oral laxative Topical cream
Inhibition of GPIIb/IIIa receptors on platelet Inhibition of GPIa interaction with inter-canalicular system Inhibition of von Willebrand – platelet – fibrinogen interaction Poor platelet plug formation increased risk of haemorrhage
Chamomile Restlessness, insomnia Gastrointestinal upset
Central nervous system suppressant Increased risk of bleeding
Echinacea URTI Wound healing
Decreases immunosuppressive effects Additive hepatotoxic effects Inhibits CYP3A4
Evening primrose PMS, Menopause, Atopic eczema Rheumatoid arthritis, Multiple sclerosis
Decreases anticonvulsants Augments anticoagulants Increases risk of seizures under anaesthetic Seizures if Concomitant use with phenothiazines
Feverfew Migraine, toothache Fever, arthritis
Anticoagulants, antiplatelet agents, and NSAIDs – inhibition of platelet aggregation and risk of bleeding
Garlic Hypertension, hyperlipidaemia, IHD, Bacterial infections, Vampires
Protease inhibitors NNRTI Cyclosporin Anti-coagulant
Ephedra (Ma Haung) Appetite suppressant Weight loss
Side effects • palpitations, • hypertension, • tachycardia, • stroke, • seizures • Cardiomegaly • Catecholamine depletion • Fatal arrhythmias
Ginger Nausea Arthritis
Increase stomache acid Anti-platelet Enhanced sedative effect of BZD Affects anti-HT meds Alters cardiac contractility Hypoglycaemia
Ginkgo Memory loss, Alzheimer's PVD, frostbite
Thiazide diuretics increased risk of bleeding Buspirone and fluoxetine Trazodone – associated with coma Insulin – altered insulin secretion Anticonvulsants – decreased efficacy Mild inhibitor of CYP3A
Ginseng Bring back lost lover Increase stamina
Digoxin – increased effects Anticoagulants – decreased efficacy Monoamine oxidase inhibitors – insomnia, headache, tremor, agitation, and worsening of depression Diabetes medications – increased risk of hypoglycaemia Opioids – decreased analgesic effect Oestrogen – additive estrogenic effect
Kava Anxiety, insomnia
Augments BZD • Inhibits levodopa • CNS Depressant • Antihistamine • Alcohol • Hepatotoxic
Liquorice Ulcers, gastritis, arthritis
Prolongs effect of corticosteroids Increases digoxin toxicity Enhances K+ depleting diuretics Hypertension
St. John's wort Depression, anxiety Mood disorders
Cyclosporine – decreased levels and possible transplant rejection Digoxin – decreased levels Protease inhibitors – decreased levels Tacrolimus – decreased levels Methadone – decreased serum concentration Antidepressants – Serotonin-syndrome Oral contraceptives – decreased levels Theophylline – decreased levels Warfarin – decreased INR 5-hydroxytryptamine 1 agonists – serotonin syndrome. Potentially induce CYP3A4, CYP2D6 and CYP1A2
Valerian Insomnia, anxiety Restlessness, tension
CNS Depression CYP3A4 inhibition