The drug which abolishes the therapeutic effect of levodopa in parkinsonism, but not that of levodopacarbidopa combination is: A. Metoclopramide B. Pyridoxine C. Chlorpromazine D. Isoniazid

The drug which abolishes the therapeutic effect of
levodopa in parkinsonism, but not that of levodopacarbidopa combination is:
A. Metoclopramide
B. Pyridoxine
C. Chlorpromazine
D. Isoniazid
by

1 Answer

Answer :

B. Pyridoxine
by

Related questions

The following is true about entacapone except: A. It acts by inhibiting degradation of dopamine in the brain B. If prolongs the therapeutic effect of levodopacarbidopa in parkinsonism C. It can accentuate levodopa induced dyskinesias D. It can cause diarrhoea as a side effec

Description : The following is true about entacapone except: A. It acts by inhibiting degradation of dopamine in the brain B. If prolongs the therapeutic effect of levodopacarbidopa in parkinsonism C. It can accentuate levodopa induced dyskinesias D. It can cause diarrhoea as a side effec

Last Answer : A. It acts by inhibiting degradation of dopamine in the brain

The following drug/drugs does/do not produce any overt CNS effect in normal individuals but exert(s) clear cut therapeutic effect at the same dose in the presence of a specific neurological/psychiatric disorder: A. Chlorpromazine B. Levodopa C. Imipramine D. All of the above

Description : The following drug/drugs does/do not produce any overt CNS effect in normal individuals but exert(s) clear cut therapeutic effect at the same dose in the presence of a specific neurological/psychiatric disorder: A. Chlorpromazine B. Levodopa C. Imipramine D. All of the above

Last Answer : B. Levodopa

The following drug is effective in chlorpromazine induced parkinsonism: A. Trihexyphenidyl B. Selegiline C. Bromocriptine D. Levodopa + carbidopa

Description : The following drug is effective in chlorpromazine induced parkinsonism: A. Trihexyphenidyl B. Selegiline C. Bromocriptine D. Levodopa + carbidopa

Last Answer : A. Trihexyphenidyl

The primary action by which entacapone and tolcapone enhance the therapeutic effect of levodopa-carbidopa in parkinsonism is: A. Inhibition of levodopa methylation in the liver B. Inhibition of dopamine methylation in the brain C. Inhibition of oxidative deamination of dopamine in the brain D. Facilitation of active transport of levodopa across brain capillaries

Description : The primary action by which entacapone and tolcapone enhance the therapeutic effect of levodopa-carbidopa in parkinsonism is: A. Inhibition of levodopa methylation in the liver B. Inhibition of ... of dopamine in the brain D. Facilitation of active transport of levodopa across brain capillaries

Last Answer : A. Inhibition of levodopa methylation in the liver

Though bromocriptine acts directly on dopamine receptors, it is used in parkinsonism only as a supplement to levodopa because: A. It has low efficacy B. It produces marked dyskinesias C. Used alone, its effective doses produce intolerable side effects D. Its therapeutic effect takes long time to develop

Description : Though bromocriptine acts directly on dopamine receptors, it is used in parkinsonism only as a supplement to levodopa because: A. It has low efficacy B. It produces marked dyskinesias C. ... its effective doses produce intolerable side effects D. Its therapeutic effect takes long time to develop

Last Answer : C. Used alone, its effective doses produce intolerable side effect

Interaction between the following pair of drugs can be avoided by making suitable adjustments: A. Levodopa and metoclopramide B. Furosemide and indomethacin C. Tetracyclines and ferrous sulfate D. Clonidine and chlorpromazine

Description : Interaction between the following pair of drugs can be avoided by making suitable adjustments: A. Levodopa and metoclopramide B. Furosemide and indomethacin C. Tetracyclines and ferrous sulfate D. Clonidine and chlorpromazine

Last Answer : C. Tetracyclines and ferrous sulfate

The following drug combination should not be used in parkinsonism: A. Levodopa + anticholinergics B. Levodopa + amantadine C. Bromocriptine + levodopa D. Amantadine + anticholinergics

Description : The following drug combination should not be used in parkinsonism: A. Levodopa + anticholinergics B. Levodopa + amantadine C. Bromocriptine + levodopa D. Amantadine + anticholinergics

Last Answer : D. Amantadine + anticholinergics

The following drug is added to levodopa therapy of parkinsonism to attenuate ‘wearing off’ effect: A. Selegiline B. Trihexiphenidyl C. Amantadine D. Any of the abov

Description : The following drug is added to levodopa therapy of parkinsonism to attenuate ‘wearing off’ effect: A. Selegiline B. Trihexiphenidyl C. Amantadine D. Any of the abov

Last Answer : A. Selegiline

The antiparkinsonian action of central anticholinergics has the following features except: A. They control tremor more than rigidity B. They produce a low ceiling therapeutic effect C. They are effective in neuroleptic drug induced parkinsonism D. They are the preferred drugs in advanced case

Description : The antiparkinsonian action of central anticholinergics has the following features except: A. They control tremor more than rigidity B. They produce a low ceiling therapeutic effect C. They are effective in neuroleptic drug induced parkinsonism D. They are the preferred drugs in advanced case

Last Answer : D. They are the preferred drugs in advanced cases

For majority of patients of parkinsonism the standard drug therapy is: A. Levodopa B. Levodopa + carbidopa C. Levodopa + trihexiphenidyl D. Bromocriptine

Description : For majority of patients of parkinsonism the standard drug therapy is: A. Levodopa B. Levodopa + carbidopa C. Levodopa + trihexiphenidyl D. Bromocriptine

Last Answer : B. Levodopa + carbidopa

The most effective drug in parkinsonism is: A. Bromocriptine B. Selegiline C. Levodopa + carbidopa D. Biperiden

Description : The most effective drug in parkinsonism is: A. Bromocriptine B. Selegiline C. Levodopa + carbidopa D. Biperiden

Last Answer : C. Levodopa + carbidopa

Interaction between the following pair of drugs can be avoided by making suitable adjustments: A. Levodopa and metoclopramide B. Furosemide and indomethacin C. Tetracyclines and ferrous sulfate D. Clonidine and chlorpromazine

Description : Interaction between the following pair of drugs can be avoided by making suitable adjustments: A. Levodopa and metoclopramide B. Furosemide and indomethacin C. Tetracyclines and ferrous sulfate D. Clonidine and chlorpromazine

Last Answer : C. Tetracyclines and ferrous sulfate

The following is true of selegiline: A. It does not exert antiparkinsonian action unless combined with levodopa B. It overcomes the ‘on-off ’ effect in levodopa treated advanced parkinsonian patients C. It retards the progression of Parkinson's disease D. At doses used in parkinsonism it does not interfere with peripheral metabolism of dietary amines

Description : The following is true of selegiline: A. It does not exert antiparkinsonian action unless combined with levodopa B. It overcomes the on-off ' effect in levodopa treated advanced parkinsonian ... D. At doses used in parkinsonism it does not interfere with peripheral metabolism of dietary amines

Last Answer : . At doses used in parkinsonism it does not interfere with peripheral metabolism of dietary amines

In the treatment of parkinsonism, bromocriptine differs from levodopa in the following respects except: A. It does not need conversion to an active metabolite B. It has a longer duration of action C. It activates dopamine D2 receptors, with little/antagonistic action on D1 receptors D. It does not produce behavioral/psychiatric side effect

Description : In the treatment of parkinsonism, bromocriptine differs from levodopa in the following respects except: A. It does not need conversion to an active metabolite B. It has a longer duration of ... with little/antagonistic action on D1 receptors D. It does not produce behavioral/psychiatric side effect

Last Answer : D. It does not produce behavioral/psychiatric side effects

Use of carbidopa along with levodopa in the treatment of parkinsonism: A. Inhibits development of involuntary movements B. Minimises ‘on-off ’ effect’ C. Inhibits occurrence of behavioral abnormalities D. Accentuates nausea and vomiting

Description : Use of carbidopa along with levodopa in the treatment of parkinsonism: A. Inhibits development of involuntary movements B. Minimises ‘on-off ’ effect’ C. Inhibits occurrence of behavioral abnormalities D. Accentuates nausea and vomiting

Last Answer : B. Minimises ‘on-off ’ effect

16.13 Gynaecomastia can be treated with: A. Chlorpromazine B. Cimetidine C. Bromocriptine D. Metoclopramide

Description : 16.13 Gynaecomastia can be treated with: A. Chlorpromazine B. Cimetidine C. Bromocriptine D. Metoclopramide

Last Answer : C. Bromocriptine

Which adverse drug effect is more common in children than in adults: A. Isoniazid induced neuropathy B. Chlorpromazine induced muscle dystonia C. Digoxin induced cardiac arrhythmia D. Penicillin hypersensitivity

Description : Which adverse drug effect is more common in children than in adults: A. Isoniazid induced neuropathy B. Chlorpromazine induced muscle dystonia C. Digoxin induced cardiac arrhythmia D. Penicillin hypersensitivity

Last Answer : B. Chlorpromazine induced muscle dystonia

Which adverse drug effect is more common in children than in adults: A. Isoniazid induced neuropathy B. Chlorpromazine induced muscle dystonia C. Digoxin induced cardiac arrhythmia D. Penicillin hypersensitivity

Description : Which adverse drug effect is more common in children than in adults: A. Isoniazid induced neuropathy B. Chlorpromazine induced muscle dystonia C. Digoxin induced cardiac arrhythmia D. Penicillin hypersensitivity

Last Answer : B. Chlorpromazine induced muscle dystonia

Ropinirole differs from bromocriptine in the following respect: A. It does not directly activate dopamine D2 receptors B. It produces milder gastrointestinal side effects C. In early cases of parkinsonism, it is less likely to need levodopa supplementation D. Both 'B' and 'C' are correct

Description : Ropinirole differs from bromocriptine in the following respect: A. It does not directly activate dopamine D2 receptors B. It produces milder gastrointestinal side effects C. In early cases of parkinsonism, it is less likely to need levodopa supplementation D. Both 'B' and 'C' are correct

Last Answer : D. Both 'B' and 'C' are correct

Which antiemetic selectively blocks levodopa induced vomiting without blocking its antiparkinsonian action: A. Metoclopramide B. Cisapride C. Domperidone D. Ondansetron

Description : Which antiemetic selectively blocks levodopa induced vomiting without blocking its antiparkinsonian action: A. Metoclopramide B. Cisapride C. Domperidone D. Ondansetron

Last Answer : C. Domperidone

Which of the following drugs acts by inhibiting an enzyme in the body: A. Atropine B. Allopurinol C. Levodopa D. Metoclopramide

Description : Which of the following drugs acts by inhibiting an enzyme in the body: A. Atropine B. Allopurinol C. Levodopa D. Metoclopramide

Last Answer : B. Allopurinol

Tolerance is generally not acquired to: A. Antisecretory action of atropine B. Sedative action of chlorpromazine C. Emetic action of levodopa D. Vasodilator action of nitrates

Description : Tolerance is generally not acquired to: A. Antisecretory action of atropine B. Sedative action of chlorpromazine C. Emetic action of levodopa D. Vasodilator action of nitrates

Last Answer : A. Antisecretory action of atropine

A patient of pulmonary tuberculosis treated with rifampin + isoniazid + pyrazinamide developed parasthesias, weakness, dizziness, ataxia and depressed tendon reflexes. Which of the following measures would you recommend: A. Temporarily discontinue isoniazid and add pyridoxine B. Substitute isoniazid with thiacetazone C. Substitute pyrazinamide with ethambutol D. Substitute rifampin with streptomycin

Description : A patient of pulmonary tuberculosis treated with rifampin + isoniazid + pyrazinamide developed parasthesias, weakness, dizziness, ataxia and depressed tendon reflexes. Which of the following ... with thiacetazone C. Substitute pyrazinamide with ethambutol D. Substitute rifampin with streptomycin

Last Answer : A. Temporarily discontinue isoniazid and add pyridoxine

Which of the following drugs has mild antiparkinsonian action of its own, prolongs levodopa action and allows reduction of its dose by about 25%: A. Benserazide B. Selegiline C. Amantadine D. Pyridoxine

Description : Which of the following drugs has mild antiparkinsonian action of its own, prolongs levodopa action and allows reduction of its dose by about 25%: A. Benserazide B. Selegiline C. Amantadine D. Pyridoxine

Last Answer : B. Selegiline

The extrapyramidal adverse effect of antipsychotic drug therapy which does not respond to central anticholinergics is: A. Parkinsonism B. Acute muscle dystonia C. Rabbit syndrome D. Tardive dyskinesia

Description : The extrapyramidal adverse effect of antipsychotic drug therapy which does not respond to central anticholinergics is: A. Parkinsonism B. Acute muscle dystonia C. Rabbit syndrome D. Tardive dyskinesia

Last Answer : D. Tardive dyskinesia

Isoniazid is a primary antitubercular agent that (a) Requires pyridoxine supplementation (b) May discolor the tears, saliva, urine or feces orange-red (c) Causes ocular complications that are reversible if the drug is discontinued (d) May be ototoxic and nephrotoxic (e) Should never be used due to hepatotoxic potential

Description : Isoniazid is a primary antitubercular agent that (a) Requires pyridoxine supplementation (b) May discolor the tears, saliva, urine or feces orange-red (c) Causes ocular complications that are reversible if ... (d) May be ototoxic and nephrotoxic (e) Should never be used due to hepatotoxic potential

Last Answer : Ans: A

Choose the correct statement about lamotrigine: A. It is a dopaminergic agonist used in parkinsonism B. It acts by blocking NMDA-type of glutamate receptors C. It is a broad spectrum antiepileptic drug D. It suppresses tonic-clonic seizures, but worsens absence seizures

Description : Choose the correct statement about lamotrigine: A. It is a dopaminergic agonist used in parkinsonism B. It acts by blocking NMDA-type of glutamate receptors C. It is a broad spectrum antiepileptic drug D. It suppresses tonic-clonic seizures, but worsens absence seizures

Last Answer : C. It is a broad spectrum antiepileptic drug

Select the drug(s) which afford(s) relief in gastroesophageal reflux by increasing lower esophageal sphincter tone and promoting gastric emptying, but without affecting acidity of gastric contents: A. Sodium alginate B. Metoclopramide C. Cisapride D. Both ‘B’ and ‘C

Description : Select the drug(s) which afford(s) relief in gastroesophageal reflux by increasing lower esophageal sphincter tone and promoting gastric emptying, but without affecting acidity of gastric contents: A. Sodium alginate B. Metoclopramide C. Cisapride D. Both ‘B’ and ‘C

Last Answer : D. Both ‘B’ and ‘C’

The therapeutic effect of sulfasalazine in ulcerative colitis is exerted by: A. Inhibitory action of the unabsorbed drug on the abnormal colonic flora B. Breakdown of the drug in colon to release 5-aminosalicylic acid which suppresses inflammation locally C. Release of sulfapyridine having antibacterial property D. Systemic immunomodulatory action of the drug

Description : The therapeutic effect of sulfasalazine in ulcerative colitis is exerted by: A. Inhibitory action of the unabsorbed drug on the abnormal colonic flora B. Breakdown of the drug in ... locally C. Release of sulfapyridine having antibacterial property D. Systemic immunomodulatory action of the drug

Last Answer : B. Breakdown of the drug in colon to release 5-aminosalicylic acid which suppresses inflammation locally

The following drug claimed to have a therapeutic effect in senile dementia has α adrenergic blocking activity: A. Piracetam B. Pyritinol C. Codergocrine D. Methylphenidate

Description : The following drug claimed to have a therapeutic effect in senile dementia has α adrenergic blocking activity: A. Piracetam B. Pyritinol C. Codergocrine D. Methylphenidate

Last Answer : C. Codergocrine

When therapeutic effects decline both below and above a narrow range of doses, a drug is said to exhibit: A. Ceiling effect B. Desensitization C. Therapeutic window phenomenon D. Nonreceptor mediated action

Description : When therapeutic effects decline both below and above a narrow range of doses, a drug is said to exhibit: A. Ceiling effect B. Desensitization C. Therapeutic window phenomenon D. Nonreceptor mediated action

Last Answer : C. Therapeutic window phenomenon

Choose the correct statement about topotecan: A. It is a DNA topoisomerase I inhibitor which causes single strand DNA breaks B. It is a cell cycle specific anticancer drug C. It is a COMT-inhibitor used in advanced parkinsonism D. Both 'A' and 'B' are correc

Description : Choose the correct statement about topotecan: A. It is a DNA topoisomerase I inhibitor which causes single strand DNA breaks B. It is a cell cycle specific anticancer drug C. It is a COMT-inhibitor used in advanced parkinsonism D. Both 'A' and 'B' are correc

Last Answer : D. Both 'A' and 'B' are correct

The following prokinetic drug has been implicated in causing serious ventricular arrhythmias, particularly in patients concurrently receiving erythromycin or ketoconazole: A. Domperidone B. Cisapride C. Mosapride D. Metoclopramide

Description : The following prokinetic drug has been implicated in causing serious ventricular arrhythmias, particularly in patients concurrently receiving erythromycin or ketoconazole: A. Domperidone B. Cisapride C. Mosapride D. Metoclopramide

Last Answer : B. Cisapride

A patient returning from dinner party meets with road accident and has to be urgently operated upon under general anaesthesia. Which drug can be injected intramuscularly to hasten his gastric emptying: A. Methylpolysiloxane B. Promethazine C. Metoclopramide D. Apomorphine

Description : A patient returning from dinner party meets with road accident and has to be urgently operated upon under general anaesthesia. Which drug can be injected intramuscularly to hasten his gastric emptying: A. Methylpolysiloxane B. Promethazine C. Metoclopramide D. Apomorphine

Last Answer : C. Metoclopramide

The progastrokinetic action of the following drug(s) is attenuated by atropine: A. Domperidone B. Metoclopramide C. Cisapride D. Both ‘B’ and ‘C’

Description : The progastrokinetic action of the following drug(s) is attenuated by atropine: A. Domperidone B. Metoclopramide C. Cisapride D. Both ‘B’ and ‘C’

Last Answer : D. Both ‘B’ and ‘C

Which prokinetic drug(s) produce(s) extrapyramidal side effects: A. Metoclopramide B. Cisapride C. Domperidone D. All of the above

Description : Which prokinetic drug(s) produce(s) extrapyramidal side effects: A. Metoclopramide B. Cisapride C. Domperidone D. All of the above

Last Answer : A. Metoclopramide

Select the prokinetic-antiemetic drug which at relatively higher doses blocks both dopamine D2 as well as 5-HT3 receptors and enhances acetylcholine release from myenteric neurones: A. Cisapride B. Prochlorperazine C. Metoclopramide D. Domperidon

Description : Select the prokinetic-antiemetic drug which at relatively higher doses blocks both dopamine D2 as well as 5-HT3 receptors and enhances acetylcholine release from myenteric neurones: A. Cisapride B. Prochlorperazine C. Metoclopramide D. Domperidon

Last Answer : C. Metoclopramide

The following drug given concurrently can enhance toxicity of digoxin: A. Phenobarbitone B. Metoclopramide C. Quinidine D. Magnesium hydroxide

Description : The following drug given concurrently can enhance toxicity of digoxin: A. Phenobarbitone B. Metoclopramide C. Quinidine D. Magnesium hydroxide

Last Answer : C. Quinidine

Which of the following adverse drug reactions is due to a specific genetic abnormality: A. Tetracycline induced sunburn like skin lesions B. Quinidine induced thrombocytopenia C. Metoclopramide induced muscle dystonia D. Primaquine induced massive haemolysis

Description : Which of the following adverse drug reactions is due to a specific genetic abnormality: A. Tetracycline induced sunburn like skin lesions B. Quinidine induced thrombocytopenia C. Metoclopramide induced muscle dystonia D. Primaquine induced massive haemolysis

Last Answer : D. Primaquine induced massive haemolysis

3 Select the antiemetic that prevents activation of emetogenic afferents in the gut and their central relay in chemoreceptor trigger zone/nucleus tractus solitarious, but has no effect on gastric motility: A. Ondansetron B. Domperidone C. Metoclopramide D. Cisaprid

Description : 3 Select the antiemetic that prevents activation of emetogenic afferents in the gut and their central relay in chemoreceptor trigger zone/nucleus tractus solitarious, but has no effect on gastric motility: A. Ondansetron B. Domperidone C. Metoclopramide D. Cisaprid

Last Answer : A. Ondansetron

Multidrug resistant (MDR) tuberculosis is defined as resistance to: A. Any two or more antitubercular drugs B. Isoniazid + any other antitubercular drug C. Isoniazid + Rifampin + any one or more antitubercular drugs D. All five first line antitubercular drugs

Description : Multidrug resistant (MDR) tuberculosis is defined as resistance to: A. Any two or more antitubercular drugs B. Isoniazid + any other antitubercular drug C. Isoniazid + Rifampin + any one or more antitubercular drugs D. All five first line antitubercular drugs

Last Answer : C. Isoniazid + Rifampin + any one or more antitubercular drugs

Indicate the second line antitubercular drug that is being preferred to supplement ethambutol + streptomycin in case of hepatotoxicity due to isoniazid/ rifampin/pyrazinamide: A. Ethionamide B. Cycloserine C. Ofloxacin D. Capreomycin

Description : Indicate the second line antitubercular drug that is being preferred to supplement ethambutol + streptomycin in case of hepatotoxicity due to isoniazid/ rifampin/pyrazinamide: A. Ethionamide B. Cycloserine C. Ofloxacin D. Capreomycin

Last Answer : C. Ofloxacin

The antitubercular action of thiacetazone has the following feature(s): A. It is a low efficacy antitubercular drug B. It is combined with isoniazid to improve anti-tubercular efficacy of the latter C. It is combined with isoniazid to prevent development of resistant infection D. Both ‘A’ and ‘C’ are correc

Description : The antitubercular action of thiacetazone has the following feature(s): A. It is a low efficacy antitubercular drug B. It is combined with isoniazid to improve anti-tubercular efficacy of the latter C. ... with isoniazid to prevent development of resistant infection D. Both A' and C' are correc

Last Answer : D. Both ‘A’ and ‘C’ are correct

Which first line antitubercular drug is only tuberculostatic and not tuberculocidal: A. Rifampin B. Isoniazid C. Ethambutol D. Pyrazinamide

Description : Which first line antitubercular drug is only tuberculostatic and not tuberculocidal: A. Rifampin B. Isoniazid C. Ethambutol D. Pyrazinamide

Last Answer : C. Ethambutol

Choose the correct statement about rifampin: A. It is the most active drug on slow growing tubercle bacilli B. Its antitubercular efficacy is lower than that of isoniazid C. It is active against many atypical mycobacteria D. It does not effectively cross blood-CSF barrier

Description : Choose the correct statement about rifampin: A. It is the most active drug on slow growing tubercle bacilli B. Its antitubercular efficacy is lower than that of isoniazid C. It is active against many atypical mycobacteria D. It does not effectively cross blood-CSF barrier

Last Answer : C. It is active against many atypical mycobacteria

As an antitubercular drug, isoniazid has the following advantages except: A. It is tuberculocidal B. It acts on both extra and intracellular bacilli C. Tubercle bacilli do not develop resistance against it D. It is cheap

Description : As an antitubercular drug, isoniazid has the following advantages except: A. It is tuberculocidal B. It acts on both extra and intracellular bacilli C. Tubercle bacilli do not develop resistance against it D. It is cheap

Last Answer : C. Tubercle bacilli do not develop resistance against it

Concurrent use of the following drug is likely to cause failure of oral contraception: A. Isoniazid B. Rifampicin C. Cimetidine D. Propranolol

Description : Concurrent use of the following drug is likely to cause failure of oral contraception: A. Isoniazid B. Rifampicin C. Cimetidine D. Propranolol

Last Answer : C. Cimetidin

Which of the following drugs acts by inhibiting an enzyme in the body: A. Atropine B. Allopurinol C. Levodopa D. Metoclopramide

Description : Which of the following drugs acts by inhibiting an enzyme in the body: A. Atropine B. Allopurinol C. Levodopa D. Metoclopramide

Last Answer : B. Allopurinol

Select the psychotropic drug having a narrow safety margin: A. Chlorpromazine B. Buspirone C. Lithium carbonate D. Fluoxetine

Description : Select the psychotropic drug having a narrow safety margin: A. Chlorpromazine B. Buspirone C. Lithium carbonate D. Fluoxetine

Last Answer : C. Lithium carbonate

Select the drug which should not be used to treat neurotic anxiety and tension syndromes despite having antianxiety action: A. Buspirone B. Chlorpromazine C. Diazepam D. Alprazolam

Description : Select the drug which should not be used to treat neurotic anxiety and tension syndromes despite having antianxiety action: A. Buspirone B. Chlorpromazine C. Diazepam D. Alprazolam

Last Answer : B. Chlorpromazine