Formula

Question 1

THE FORMULA (IMPORTANT)…

Answer 1

Bodyweight (kg) x Dose Rate (mg/kg)
divided by Concentration of Drug (mg/ml or mg)

Question 2

EXAMPLE…

Answer 2

A 5kg cat requires an injectable dose of Metacam. The dose rate is 0.2mg/kg and the concentration is 2mg/ml

Bodyweight x Dose Rate divided by Concentration of Drug =

5kg x 0.2mg/kg divided by 2mg/ml =
Answer= 0.5l

Question 3

EXAMPLE FOR TABLET CALCULATIONS…

Answer 3

A 15kg dog requires Carprofen tablets. The dose rate is 2mg/kg and the concentration is 50mg
Your answer should be rounded to the nearest ½ tablet

Bodyweight x Dose Rate divided by Concentration of Drug

15kg x 2mg/kg divided by 50mg =
Answer = 0.6 tablets rounded to 0.5 tablets

Question 4

What does BID means?

Answer 4

Twice a day

Question 5

What does SID means?

Answer 5

Once a day

Question 6

What does TID means?

Answer 6

Three times a day

Question 7

Example of BID calculation…

Answer 7

Sum- 5 x 20 = 100
100 divides by 50= 2
2 x 2= 4
4 x 7 = 28 tablets

Question 8

Example of SID calculation…

Answer 8

1.5 x 8 = 12
12 divided by 16 = 0.75
0.75 x 2 = 1.5 - 2 tablets

Question 9

Example of TID calculation…

Answer 9

Sum - 5 x 20 = 100
100 divided by 50 = 2
2 x 3 = 6
6 x 7 = 42 tablets

Question 10

Example of a % conversion…

Answer 10

Convert 1.87% into mg/ml =
1.87 x 10 = 18.7mg/ml
750ml x 0.2mg/kg divided by 18.7mg/ml
Answer = 8ml

Question 11

Example of sachets calculation…

Answer 11

Sparky weighs 11kg and requires Bisolvon, the dose rate is 2mg/kg and the sachet concentration is 10mg/sachet. The patient requires a 5 day course BID

Bodyweight x Dose Rate divided by Concentration of Drug

11 x 2 divided by 10 = 2 sachets
2 x 5 = 10 x 2 = 20
Answer = 20 sachets