What Is LSD? Effects, Risks and How Acid Works
LSD is a potent Schedule I psychedelic that alters perception, mood and time. Learn how acid works, how…
Illicit Drugs
Hallucinogens
LSD, psilocybin, mescaline and other hallucinogenic substances.
LSD Withdrawal: Does LSD Cause Withdrawal?
LSD does not typically cause a classic physical withdrawal syndrome. Learn the difference between withdrawal, tolerance, a comedown,…
How Long Does LSD Stay in Your System? Blood, Urine and Testing
LSD has a plasma half-life of roughly 3 to 4 hours, while specialized testing can detect LSD metabolites…
LSD Effects and Side Effects: Short-Term and Long-Term Risks
LSD can cause major perceptual changes, insomnia, increased heart rate, panic and paranoia. Learn common effects, bad trips,…
Is LSD Addictive? Tolerance, Dependence and Hallucinogen Use Disorder
LSD has low physical-dependence and compulsive-use potential, but rapid tolerance and problematic hallucinogen use can occur. Learn when…
Can You Overdose on LSD? Toxicity, Bad Trips and Emergency Signs
Severe LSD intoxication can cause prolonged psychedelic effects, panic, paranoia and unsafe behavior, while death from LSD itself…
LSD and Alcohol: What Happens When Acid and Alcohol Are Mixed?
Alcohol does not reliably stop an LSD trip and may make judgment and impairment harder to recognize. Learn…
LSD vs Mushrooms: Effects, Duration and Key Differences
LSD and psilocybin mushrooms are both classic psychedelics, but LSD generally lasts longer. Compare their effects, pharmacokinetics, tolerance,…
What Does LSD Look Like? Acid Tabs, Blotter and Fake LSD
LSD can appear on blotter paper, in liquid, on sugar cubes or in small tablets, but appearance cannot…
How Long Does LSD Last? Trip Timeline and Aftereffects
LSD effects can last up to about 12 hours. Learn the usual onset, peak, trip duration, half-life, aftereffects…
LSD Bad Trip: Symptoms, Risks and What to Do
An LSD bad trip can involve intense panic, paranoia, confusion and unsafe behavior. Learn what a bad trip…
LSD Flashbacks and HPPD: Symptoms, Duration and Treatment
LSD flashbacks are brief recurrent perceptual experiences, while HPPD can cause persistent or recurrent visual disturbances that interfere…
What Is Cocaine? Effects, Risks, Addiction and Treatment
Cocaine is a powerful Schedule II stimulant with major cardiovascular, neurologic, psychiatric and addiction risks. Learn how cocaine…
Cocaine Withdrawal: Symptoms, Timeline and Treatment
Cocaine withdrawal often begins with a crash involving exhaustion, low mood, sleep changes and craving. Learn the typical…
How Long Does Cocaine Stay in Your System?
Cocaine has a short plasma half-life, but benzoylecgonine remains detectable longer. SAMHSA gives a typical urine window of…
Cocaine Side Effects: Short-Term and Long-Term Risks
Cocaine can cause anxiety, insomnia and rapid heart rate, while severe complications include arrhythmia, heart attack, stroke, seizure,…
Cocaine Addiction: Signs, Treatment and Recovery
Cocaine addiction, clinically called cocaine use disorder, can involve craving, repeated binges, loss of control and continued use…
Cocaine Overdose: Signs, Risks and What to Do
Cocaine overdose can cause heart attack, arrhythmia, stroke, seizure, hyperthermia and death. Learn warning signs, what emergency care…
Cocaine and Alcohol: Cocaethylene, Heart Risks and Overdose
Cocaine and alcohol form cocaethylene, an active metabolite associated with additional cardiovascular risk. Learn what cocaethylene is, why…
Cocaine and Fentanyl: Contamination, Overdose and Naloxone
Illicit fentanyl can be mixed into cocaine without the user's knowledge. Learn how mixed stimulant-opioid overdose can look,…
Crack vs Cocaine: Differences, Effects, Addiction and Risks
Crack and powder cocaine contain the same primary drug in different chemical forms. Learn how crack differs from…
What Color Is Pure Cocaine? Why Appearance Cannot Show Purity
DEA describes cocaine hydrochloride as a white crystalline powder, but color cannot prove purity. Learn why white, off-white…