Antihistamines

Q.

Histidine can be converted into histamine by

1. Decarboxylation of histidine

2. Dehydrohalogenation of histamine

3. Decarboxylation of Aspirin

4. Dehydration of histidine

Q.

Naturally occurring α -amino acids, histdine is ----- in nature

1. Amphoteric

2. Natural

3. Acidic

4. Basic

Q. The following molecule (Brompheniramine) acts as an:


JEE MAIN 2020

1. Anti-histamine
2. Anti-depressant
3. Anti-bacterial
4. Antiseptic

Q.

which of the following is not an antihistamine

1. Equanil

2. Dimetapp

3. Seldane

4. Chloropheniramine

Q. Which one of the following is employed as antihistamine?

1. Brompheniramine
2. Chloramphenicol
3. Serotonin
4. Norethindrone.

Q. Histamines stimulate secretion of pepsin and hydrochloric acid in the stomach and excess of it can lead to acidity. They are also responsible for nasal congestion associated with common cold and allergic response to pollen.A person having an allergic problem takes ‘Brompheniramine’ which is an antihistamine.
Which of the following is correct about level of secretion of hydrochloric acid in the stomach of the person after consuming ‘Brompheniramine’?

1. It increases
2. It may increase or decrease depending on quantity of dose.
3. It remains unaffected
4. It decreases

Q.

Which one of the following is employed as an antihistamine?

1. Chloramphenicol

2. Diphenylhydramine

3. Norethindrone

4. Omeprazole

Q.

Which of the following is employed as an antihistamine?

1. Chloramphenicol

2. Norothindrone

3. Diphenylhydramine

4. Omeprazole

   ​​​​​​​

Q. Which drug prevents the interaction of histamine with the receptors present in the stomach wall?

1. Cimetidine
2. Tranquilizers
3. Antacids
4. Sulphonamides

Q. Histamine stimulates the secretion of pepsin and hydrochloric acid and antihistamines are used to prevent the action of histamines. Among the following which are antihistamines?

1. Ranitidine
2. Terfenadine
3. Brompheniramine
4. All of these