Some drugs can take effect very quickly, while others take more time. Be aware of sudden, unexpected changes to your body or mental state. Physiological effects can include:
Feeling very drunk when you have consumed little or no alcohol
Sudden body temperature change, signaled by sweating or chattering teeth
Sudden dizziness, disorientation, blurred vision
Waking up with no memory, or spotty memory
Most drugs leave the body very quickly, within 12 – 72 hours. If you are choosing to have a medical forensic exam, wait to urinate until at the hospital (if possible) or bring in a urine sample with you.