If the doctor orders 1 dram of medication to be given and the vial states that there is 1 mg in 1 cc you must do what

First, you need to convert all units to calculate what dose the doctor ordered.

1 dram = 4 mL

So, it must be given 4 mL of medication

1 cc = 1 mL

So, if t he vial states that there is 1 mg in 1 cc, that means the concentration is 1 mg in 1 mL or, 1 mg/mL.

Now, we need to calculate what is the dose of medication in 4 mL:

1 mg is in 1 mL, how many mg is in 4 mL:

1 mg : 1 mL = x : 4 mL

Crossing the products:

x · 1 = 1 mg · 4

⇒ x = 4 mg