Question

I. Oral Solid 1. Cloxacillin Na 0.5 g p.o.q6h. How many capsules will be administered per dose if the stock is 250 mg/cap? 2. Mefenamic acid 500 mg p.o. tid. How many tablets must be administered per dose if the stock is 250 mg/tab? 3. Codeine gr I p.O. STAT. How many tablets must be administered if the stock is 30 mg/tab? 4. Aspirin gr Xq4h. How many tablets must be administered per dose of the stock is 300 mg tablets? 5. Codeine 1/6 gr p.O. STAT. How many tablets must be prepared if the stock is 5mg/tab?

Answer 1

1. 1capusle=250 mg in stock

1gram= 1000mg

Dose prescribed is 0.5g

0.5g= 500 mg

500/250 mg= 2

2 capsules must be administered per dose prescribed

2. 500 mg of mefenamic acid is prescribed three times a day

Stock contains 250 mg/tab

500/250= 2 tablets

2 tablets must be administered per dose

3. Codeine 1gram

Each tablet contains 30 mg

1gram=1000 mg

For 1 gm of codeine = 1000/30= 33.3

33 1/2 tablets are administered

4. For 300 mg /tab

Aspirin of 1gr when prescribed requires no: of tablets=

1000/300= 3.33

3 and 1/2 tablet is required

5. Stock contains 5mg/ tab

Prescribed 1/6 gr= 0.16 gr

0.16 gram= 160 mg

For 5mg/tablet= 160/5= 32 tablets

32 tablets are administered