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Also indexed as: Amidate, Desflurane, Dipravin, Droperidol, Enflurane, Ethrane, Etomidate, Forane, Halothane, Inapsine, Isoflurane, Ketalar, Ketamine, Methoxyflurane, Penthrane, Propofol, Sevoflurane, Suprane, Ultane
General anesthetics are used to produce unconsciousness during surgery. Unlike local anesthetics that are used in dentistry and minor surgery, general anesthetics circulate throughout the body, which results in a stronger action on the nervous system and a greater potential for side effects. Medications used as general anesthetics come from many different drug classifications, including barbiturates and benzodiazepines.
Summary of Interactions with Vitamins, Herbs, and Foods
In some cases, an herb or supplement may appear in more than one category, which may seem contradictory. For clarification, read the full article for details about the summarized interactions.
 May Be Beneficial: Side effect reduction/prevention—Taking these supplements may help reduce the likelihood and/or severity of a potential side effect caused by the medication. | Catechin* Ginger* Milk thistle |
| Depletion or interference | None known |
| Supportive interaction | None known |
| Reduced drug absorption/bioavailability | None known |
| Adverse interaction | None known |
| Interactions common to many, if not all, General Anesthetics are described in this article. Interactions reported for only one or several drugs in this class may not be listed in this article. Some drugs listed in this article are linked to articles specific to that respective drug; please refer to those individual drug articles. The information in this article may not necessarily apply to drugs in this class for which no separate article exists. If you are taking a General Anesthetic for which no separate article exists, talk with your doctor or pharmacist. | |
An asterisk (*) next to an item in the summary indicates that the interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.
The interactions described below pertain to anesthetics in general. For specific interactions, refer to the individual drugs.
Catechin
Some general anesthetic drugs have infrequently caused liver damage. One animal study showed that taking catechin (a bioflavonoid) prior to halothane exposure reduced the amount of liver damage caused by the drug.1 Additional research is needed to determine whether this protective effect occurs in humans and with other general anesthetics.
Ginger (Zingiber officinale)
General anesthetics commonly cause nausea upon waking. In a double-blind study, taking 1 gram of ginger one hour before surgery was as effective at reducing nausea and vomiting as the anti-nausea drug metoclopramide.2 Individuals taking ginger in order to avoid side effects should disclose this to their doctor prior to surgery, since the herb might affect blood clotting.
Milk thistle (Silybum marianum)
Some general anesthetic drugs have infrequently caused liver damage. One animal study showed that taking silybine, an active compound found in milk thistle, prior to halothane exposure reduced the amount of liver damage caused by the drug.3 Though controlled research in humans is necessary, some doctors of natural medicine currently suggest taking milk thistle standardized to contain 140 mg of silymarin three times a day, beginning a week before surgery and continuing for at least one week after surgery.
1. Siegers CP, Fruhling A, Younes M. Influence of dithiocarb, (+)-catechin and silybine on halothane hepatotoxicity in the hypoxic rat model. Acta Pharmacol Toxicol (Copenh) 1983;53:125–9.
2. Phillips S, Ruggier R, Hutchinson SE. Zingiber officinale (ginger)—an antiemetic for day case surgery. Anaesthesia 1993;48:715–7.
3. Siegers CP, Fruhling A, Younes M. Influence of dithiocarb, (+)-catechin and silybine on halothane hepatotoxicity in the hypoxic rat model. Acta Pharmacol Toxicol (Copenh) 1983;53:125–9.
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Learn more about the authors of Using Medicines with Vitamins and Herbs
The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires February 2010.
