What You Should Know About Medicines/Glossary of Pharmacological Abbreviations
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| Abbreviation | Meaning |
|---|---|
| PRN | As needed |
| B.I.D | Twice per day, normally in the morning and at night |
| ML | Mililiter |
| g | Gram |
| Rx | Prescription |
| T.I.D | Three times a day, normally with breakfast, lunch, and dinner |
| µg | Microgram |
| AM | In the morning |
| AC | Before meals |
| MDD | Maximum daily dose |
| NPO | Nothing by mouth |
| OTC | Over the counter |
| PO | By mouth |