aa interpretation

calc fundamental links

when does “aa” mean equal amount of two or more ingredients in a prescription

aa must be followed by a numerical quantity of volume/weight next to an ingredient, and the the ingredient above has no listed quantity

interpret the following script:

codeine sulfate

papaverine HCl aa. 0.015g

calcium carbonate ad 0.3g

M. ft. cap. D.T.D no. xv

Sig. Cap I q.i.d. p.c. and h.s.

-codeine sulfate and papaverine HCl are both 0.015g

-add enough calcium carbonate to make 0.3g total

-DTD: each capsule contains 0.3g total, 0.015g of codeine AND papaverine + enough calcium carbonate to make 0.3g (DTD)

-make 15 capsules

-sig: 1 capsule 4 times a day after meals and at bedtime

what does DTD mean

dispense the dose (to EACH capsule)

what does M. ft. mean

mix and make

interpret the following script:

lanoxin injection, 0.25 mg/mL

lanoxin pediatric injectoin, 0.1 mg/mL aa ad 10 mL of 0.15 mg/mL strength

aa means sufficient mL of each strength injection to make 10 mL of 0.15 mg/mL strength, so do not use equal amounts of both