Sympatholytic Health Dictionary

  1. Health Encyclopedia
  2. Sympatholytic

Sympatholytic: From 1 Different Sources

adj. opposing the effects of the sympathetic nervous system. *Guanethidine blocks the transmission of impulses along adrenergic nerves; it is used to treat high blood pressure. *Alpha blockers and *beta blockers are other kinds of sympatholytic drugs.
Health Source: Oxford | Concise Colour Medical Dictionary
Author: Jonathan Law, Elizabeth Martin

Hyoscyamus Niger

Linn.

Habitat: Native to Europe and Asia. Occurs in the temperate Himalayas from Kashmir to Garhwal.

English: Indian Henbane, Black Henbane.

Ayurvedic: Paarsika-yavaani, Yavaani, Madkaarini, Turushkaa, Khuraashaanikaa, Khuraasaani Ajwaayin.

Unani: Barz-ul-Banj, Khuraasaani Ajwaayin.

Siddha/Tamil: Paarseekayavani, Khurasani Omam.

Action: Sedative. Narcotic drug. Used for convulsions. Action similar to Belladonna.

Key application: In spasms of gastrointestinal tract. (German Commission E, The British Herbal Pharmacopoeia.)

The leaves and flowering tops contain tropane alkaloids, 0.045-00.14%, the principal ones being hyoscyamine and hyoscine. The alkaloids are para- sympatholytic, with similar actions to Belladonna, although with less cerebral excitement.

The seeds show inhibitory activity against digestive enzyme, lipase in vitro.

Contraindicated in tachycardias, prostatic hyperplasia, narrow-angle glaucoma, acute pulmonary oedema, stenosis of gastrointestinal tract, maga colon.

Dosage: Seed—3-5 g powder. (CCRAS.)... hyoscyamus niger

Vasodilator Drugs

A group of drugs that widen blood vessels.

Vasodilator drugs include ACE inhibitors, alphablockers, calcium channel blockers, nitrate drugs, and sympatholytic drugs.

They are used to treat disorders in which abnormal narrowing of blood vessels reduces blood flow through tissues, impairing the supply of oxygen.

Such disorders include angina pectoris and peripheral vascular disease.

Vasodilators are also used to treat hypertension and heart failure.

All vasodilator drugs may cause flushing, headaches, dizziness, fainting, and swollen ankles.... vasodilator drugs

Complex Regional Pain Syndrome

(CRPS, reflex sympathetic dystrophy, RSD, Sudek’s atrophy) neurological dysfunction in a limb following trauma, surgery, or disease, characterized by intense burning pain, swelling, stiffness, and sweaty shiny mottled skin. It is caused by overactivity of the sympathetic nervous system. The *ESR is often elevated, X-rays may reveal some patchy osteoporosis, and a bone scan usually demonstrates increased blood flow. Early treatment with splinting and physiotherapy are essential, in combination with *sympatholytic drugs, corticosteroids, and regional sympathetic blocks; *sympathectomy may be required in chronic cases.... complex regional pain syndrome

Guanethidine

n. a drug that is occasionally used for the rapid reduction of high blood pressure resistant to other treatments (see sympatholytic). Common side-effects are diarrhoea, faintness, and headache.... guanethidine

Health encyclopedia icon Health Encyclopedia

Recent Searches