| SPS | Sleep Promoting Substance |
|---|---|
| SRS-A | Slow Reacting Substance of Anaphylaxis |
| ADS | acute death syndrome; acute diarrheal syndrome; Alcohol Dependence Scale; alternative delivery syste... |
| ALS | acute lateral sclerosis; advanced life support; afferent loop syndrome; amyotrophic lateral sclerosi... |
| AMS | ablepharon-microstomia syndrome; acute mountain sickness; adenosylmethionine synthetase; aggravated ... |