Question

18,19,21

D. A syrup E. A liniment avhat kind interferes acterial 18. The amount of time required for 50% of a drug to be eliminated from the body is called A Half-life B. Effective dose 50 (ED50) C. Lethal dose 50 (LD50) D. Dosage E. Half dosage 19. A drug that induces birth defects is known as a (n) A. Allergen B. Prophylactic C. Teratogen D. Idiosyncrasy E. Palliative 20. In the Physicians 'Desk Reference, the index of brand names and generic names for drugs is found in which section? A. White B Blue C. Pink D. Green E. Red 21. Amantadine is classified as A. Antiviral B. Antibiotic C. Anti-inflammatory D. Antiepileptic E. Antifungal must be

Answer 1

18. Option A- Half life

Half life of a drug means the time required to make the concentration of a drug to 50% of its original concentration administered. So half or 50% of the drug will be eliminated through elimination like urine, stool, sweat etc.

19. Option C - Teratogen

'Teratogen' means any factor or agent that can interrupt the development of fetus in side the uterus, leading to physical or functional defects. First three months of pregnancy is very tender as any disturbance to the fetus at this period can lead to birth defects. This is mainly because all the organ development occurs during the first three months or first trimester. Examples of teratogen are radiations, chemicals like certain medications taken by mother, some infections in the mother.

21. Option A- Anti viral

Amantadine is anti viral drug used to prevent and treat infections caused by Influenza A virus. The common brand name of this drug is Symmetrel