| guaifenesin | 3-(o-Methoxyphenoxy)-1,2-propanediol;an expectorant that reduces the viscosity of sputum. Synonym: glyceryl guaiacolate, guaiacol glyceryl ether. (05 Mar 2000) |
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| guam | An island in micronesia, east of the philippines, the largest and southernmost of the marianas. Its capital is agana. It was discovered by magellan in 1521 and occupied by spain in 1565. They ceded it to the united states in 1898. It is an unincorporated territory of the united states, administered by the department of the interior since 1950. The derivation of the name guam is in dispute. (12 Dec 1998) |
| Guama virus | A serologic group of the genus Bunyavirus, composed of 6 species including Catu virus, and the type strain, Guama virus. (05 Mar 2000) |
| guana | <zoology> See Iguana. Source: Websters Dictionary (01 Mar 1998) |
| guanabenz | <chemical> An alpha-2 selective adrenergic agonist used as an antihypertensive agent. Pharmacological action: adrenergic alpha-agonists, antihypertensive agents, sympatholytics. Chemical name: Hydrazinecarboximidamide, 2-((2,6-dichlorophenyl)methylene)- (12 Dec 1998) |
| guanabenz acetate | [(2,6-Dichlorobenzylidene)amino]guanidine monoacetate;a centrally acting antiadrenergic antihypertensive similar in action to clonidine. (05 Mar 2000) |
| guanacline sulfate | Cyclazenin sulfate; [2-(3,6-Dihydro-4-methyl-1(2H)-pyridinyl)ethyl]guanidine sulfate dihydrate;an antihypertensive. (05 Mar 2000) |
| guanaco | Origin: Sp. Guanaco, Peruv. Huanacu. Cf. Huanaco. <zoology> A South American mammal (Auchenia huanaco), allied to the llama, but of larger size and more graceful form, inhabiting the southern Andes and Patagonia. It is supposed by some to be the llama in a wild state. Alternative forms: huanaco. Source: Websters Dictionary (01 Mar 1998) |
| guanadrel sulfate | (1,4-Dioxaspiro[4,5]dec-2-ylmethyl)guanidine sulfate;an antihypertensive drug similar in action to guanethidine. (05 Mar 2000) |
| guanase | <enzyme> An enzyme that catalyses the deamination of guanine to form xanthine. Chemical name: Guanine aminohydrolase Registry number: EC 3.5.4.3 (12 Dec 1998) |
| guanazole | <chemical> 3,5-diamino-1,2,4-triazole. A cytostatic triazole derivative which is not to be confused with guanazolo, the generic name for 8-azaguanine. Pharmacological action: antineoplastic agent. Chemical name: 1H-1,2,4-Triazole-3,5-diamine (12 Dec 1998) |
| guanazolo | Guanine with N for C in position 8; a guanine antagonist that has been used in the treatment of acute leukaemia. Synonym: guanazolo, triazologuanine. (05 Mar 2000) |
| guanethidine | <chemical> An antihypertensive agent that acts by inhibiting selectively transmission in post-ganglionic adrenergic nerves. It is believed to act mainly by preventing the release of norepinephrine at nerve endings and causes depletion of norepinephrine in peripheral sympathetic nerve terminals as well as in tissues. Pharmacological action: adrenergic agents, antihypertensive agents, sympatholytics. Chemical name: Guanidine, (2-(hexahydro-1(2H)-azocinyl)ethyl)- (12 Dec 1998) |
| guanethidine sulfate | [2-(Octahydro-1-azocinyl)ethyl]guanidine sulfate;a potent antihypertensive agent. It appears to interfere with the release of the chemical mediator (norepinephrine) at the sympathetic neuroeffector junction; it does not produce ganglionic or parasympathetic blockade with recommended doses. In ophthalmology, it is used topically for the treatment of glaucoma and to counteract eyelid retraction in Graves' disease. (05 Mar 2000) |
| guanfacine | <chemical> A centrally acting antihypertensive agent. The drug lowers both systolic and diastolic blood pressure by activating the central nervous system alpha-2 adrenoreceptors, which results in reduced sympathetic outflow leading to reduced vascular tone. Its adverse reactions include dry mouth, sedation, and constipation. Pharmacological action: adrenergic alpha-agonists, antihypertensive agents, sympatholytics. Chemical name: Benzeneacetamide, N-(aminoiminomethyl)-2,6-dichloro- (12 Dec 1998) |