A sedative or tranquilizer (or tranquilliser, see American and British English spelling differences) is a substance that induces sedation by reducing irritability or excitement. At higher doses it may result in slurred speech, staggering gait, poor judgment, and slow, uncertain reflexes.oses of sedatives such as benzodiazepines, when used as a hypnotic to induce sleep, tend to be higher than amounts used to relieve anxiety, whereas only low doses are needed to provide a peaceful effect.
1 Scab, a hard coating on the skin formed during the wound healing reconstruction phase.  scAb, single-chain antibody fragment.
A scab that forms over an area that moves, such as a joint, may crack and a few drops of clear yellowish to pinkish fluid may ooze from the wound. A cracked scab may be uncomfortable, and an infection can develop under the scab. Scabs usually decrease in size and fall off as the new skin under the scab is formed.