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ad lib.
means ad libitum - use as much as one desires; freely in
Prescription
Similar to ad lib.
gtt
- Gutta
drops
h, hr
- hora - hour
h.s
- hour sleep or half-strength
h.s.
- Hora Somni
at bedtime
HS
- Half Strength
IJ, inj
- injectio - injection
IM
- intramuscular
with respect to injections
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