1. Dosage Calculations Made Easy
Step by step example

2. This is what needs to be given (order)
How it is supplied
Order: Rocephin 405 mg IM now
How Supplied: Rocephin 500 mg bottle.
Instructions are as follows:
Reconstitute with 1.0 mL Sterile Water for Injection. Each 1mL of solution contains approximately 350 mg equivalent of ceftriaxone.
Give: _________ mL
After reconstitution. This is what we are using to make the calculation

3. Order: Rocephin 405 mg IM now
How Supplied: Rocephin 500 mg bottle.
Instructions are as follows:
Reconstitute with 1.0 mL Sterile Water for Injection. Each 1mL of solution contains
approximately 350 mg equivalent of ceftriaxone.
Give: _________ mL
This is how our formula will look like
If we have 350 mg in 1 ml
350 mg mg
___________ = ___________
1 ml x ml
How many ml do we need to complete 405 mg
The units on top and bottom should match. Please make the necessary conversions

4. Order: Rocephin 405 mg IM now
How Supplied: Rocephin 500 mg bottle.
Instructions are as follows:
Reconstitute with 1.0 mL Sterile Water for Injection. Each 1mL of solution contains
approximately 350 mg equivalent of ceftriaxone.
Give: _________ mL
To find x value:
Cross multiply
Then divide
350 mg mg
___________ = ___________
1 ml x ml
This is how we lay out and resolve the formula
405 x 1
X= _________
350
405
X= _________
350
X= 1.1 ml