antiviral

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antiviral

 [an″te-, an″ti-vi´ral]
1. effective against viruses.
2. an agent effective against viruses.

an·ti·vi·ral

(an'tē-vī'răl),
Opposing a virus; interfering with its replication; weakening or halting its action (for example, zidovudine, acyclovir).

antiviral

/an·ti·vi·ral/ (-vi´ral) destroying viruses or suppressing their replication, or an agent that so acts.

antiviral

(ăn′tē-vī′rəl, ăn′tī-)
adj.
1. Destroying or inhibiting the growth and reproduction of viruses.
2. Computers
a. Of or relating to antivirus software.
b. Eliminating or inhibiting the effectiveness of viruses.
n.
An antiviral drug.

antiviral

destructive to viruses.

antiviral

adjective Referring to an agent or mechanism that counters viral effects or infection.
 
noun An agent that inhibits or prevents viral infection or manages its effects; an antiviral agent.

antiviral

adjective Referring to an agent or mechanism that counters viral effects or infection noun Antiviral agent, see there.

an·ti·vi·ral

(an'tē-vī'răl)
Opposing a virus; interfering with its replication; weakening or abolishing its action.

antiviral

Acting against viruses.

Antiviral

Refers to a drug that can destroy viruses and help treat illnesses caused by them.
Mentioned in: Monkeypox

antiviral

agent opposing effect of a virus; some antiviral agents interact with some local anaesthetics (see Table 1)
Table 1: Principal drug interactions of local anaesthetic agents and other medications
Local anaesthetic agent Proprietary name Principal drug interactionsEffect of interaction
Lidocaine
Xylocaine
Antiarrhythmic agents
Antibacterial agents
Antipsychotics
Antivirals
Beta-blockers
Diuretics
Dolasetron
Ulcer-healing drugs
Increased myocardial depression
Increased risk of ventricular arrhythmias if lidocaine is given with quinpristin/dalfopristin
Increased risk of ventricular arrhythmias if lidocaine is given with any drug that prolongs the QT interval of the cardiac cycle
Plasma concentration of lidocaine increased by amprenavir, atazanavir and lopinavir
Increased myocardial depression
Increased risk of lidocaine toxicity when given with propranolol
The action of lidocaine is antagonized by the hypokalaemia caused by acetazolamide, loop diuretics or thiazide and related diuretics (i.e. a greater dose of lidocaine would be required to achieve anaesthesia)
Increased risk of ventricular arrhythmia if lidocaine is given with dolasetron
Plasma concentration of lidocaine increased when given with cimetidine; risk of lidocaine toxicity increased with cimetidine
Bupivacaine
Marcain
Levo-bupivacaine
Chirocaine
Beta-blockersIncreased risk of bupivacaine toxicity when given with propranolol
Increased risk of myocardial depression if given with other antiarrhythmic agents
Prilocaine
Citanest
Antiarrhythmic agents
Antibacterial agents
Increased risk of myocardial depression if given with antiarrhythmic agents
Increased risk of methaemoglobinaemia if given with sulphonamide antibacterial agents
Ropivacaine
Naropin
AntidepressantsMetabolism of ropivacaine is inhibited by fluvoxamine, thereby enhancing the risk of ropivacaine toxicity
Mepivacaine
Scandonest
Drug not listed in the British National Formulary

antiviral (anˈ·tē·vīˑ·rl),

n a substance that combats viral infection.

an·ti·vi·ral

(an'tē-vī'răl)
Opposing a virus; interfering with its replication; weakening or halting its action (e.g., zidovudine, acyclovir).

antiviral

1. effective against viruses.
2. an agent effective against viruses.

antiviral drugs
may be useful in early stages of some virus infections or to prevent recurrences or reactivation in chronic infections. Most drugs exert their effects only during certain stages of viral replication and many are relatively toxic for the host when used systemically. In general, chemotherapy of virus infections in animals is uncommon with limited applications, mainly in topical treatment of ophthalmic infections. Examples are idoxuridine, vidarabine, amantadine hydrochloride, acyclovir, ribavirin.
References in periodicals archive ?
Furthermore, Marinomed succeeded in preclinical studies to show anti-viral activity of Carragelose against three of the most important adenoviruses causing viral conjunctivitis.
Bristol Myers Squibb had the largest market share in anti-viral drugs market for liver diseases followed by Gilead science in 2011.
As such, the NS5 protein is a key target for the development of anti-viral agents.
Eighty per cent of infections are spread by hand, and the virus can live outside the body for 24 hours which is why anti-viral tissues which kill 99.
The health body also urged healthcare providers to rely on clinical judgment before taking a decision to carry out a confirmatory test or administer the anti-viral drug.
A spokesman for Kirklees PCT said: "In terms of anti-viral collection points, we have more than enough in the Kirklees area to deal with the requests for anti-viral collections.
Health bosses from the Health Protection Agency (HPA) and NHS Warwickshire handed them packs of the anti-viral drug Tamiflu.
Tests have shown that the virus can be treated with the two anti-viral drugs.
Anti-virals are typically used to treat influenza, reducing the length of symptoms and usually their severity.
The new patent grants composition of matter claims that cover multiple formulations of phosphatidylethanolamine (PE)-binding agents attached to a wide variety of anti-viral agents.
In mid-September, The Canadian Press reported that H1N1 virus resistant to the Tamiflu anti-viral drug (generic: Oseltamivir) is appearing in high numbers throughout Northern Europe at the same time it is spreading throughout North and South America; the Caribbean; Africa; and parts of Asia, Australia, and New Zealand, Officials announced the start of resistance testing in the Northern Hemisphere once flu season began.
In addition, many of the strategies do not comply with the guidelines published by the WHO, programmes concerning anti-viral medicines and vaccinations vary considerably from one country to another and "operational planning" is still inadequate.