| Abbreviation | Definition |
|---|---|
| ADAPT | Adolescent Drug Abuse and Prevention Treatment |
| ADARC | Alcohol and Drug Abuse Research Center |
| ADARC | Alcohol Drugs and Addiction Research Centre |
| ADAT | Alcohol and Drug Action Team |
| ADAU | Anti Drug Athletes United |
| ADAW | Alcoholism Drug Abuse Weekly |
| ADBL | Alberta Drug Benefit List |
| ADC | Alcohol Drug Counselor |
| ADC | Antibody Drug Conjugate |
| ADC | Antibody Drug Conjugates |
| ADC | Antibody-Drug Conjgates |
| ADCO | Alcohol and Drug Control Officer |
| ADCS | Alcohol and Drug Compliance Services |
| ADD | Average Daily Dose |
| ADDA | Alabama Drug Discovery Alliance |
| ADDB | Advanced Drug Delivery and Biomaterials |
| ADDD | Automated Drug Dispensing Device |
| ADDD | Automated Drug Dispensing Devices |
| ADDICT | Anybody Doing Drugs In Compulsive Trouble |
| ADDIS | Aggregate Data Drug Information System |