| Abbreviation | Definition |
|---|---|
| APS | Advanced Performance Supplement |
| APV | Amprenavir |
| Ara-C | Cytarabine |
| ART | Anti Retroviral Therapy |
| ASA | Acetyl Saicylic Acid |
| ASA | Acetylsalicylic Acid |
| ASA | Aspirin (acetylsalicyclic acid) |
| ASYR | Addiction Services for York Region |
| ATDC | Adult Treatment Drug Court |
| ATOD | Alcohol Tobacco and Other Drug |
| ATV/r | Ritonavir-boosted atazanavir |
| AZD | Zidovudine |
| AZT | Zidovudine |
| B&O | Belladonna and Opium |
| BADA | Battling Against Drug Abuse |
| BADS | Bogra Anti Drug Society |
| BAR | Barbiturates |
| BBW | Black Box Warning |
| BDA | Bulgarian Drug Agency |
| BDAP | Bureau of Drug and Alcohol Programs |