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II

Stimulant and local anesthetic · Schedule II

Cocaine Goprelto, Numbrino

Cocaine is a stimulant made from the leaves of the coca plant. It has a narrow medical use as a nasal anesthetic, which is why it is Schedule II rather than Schedule I. Illicit cocaine, sold as powder or as smokable crack, is a major cause of heart attacks and overdose deaths, increasingly because it is contaminated with fentanyl.

No US medical route

Draft, awaiting medical review. Updated October 5, 2026.

Onset
Seconds to minutes
Duration
5 to 90 minutes
Naloxone reverses it?
No (but give it if opioids may be involved)
Dependence risk
Very high

Cocaine at a glance: schedule, half-life, and class

Chemical name
Cocaine hydrochloride (powder); cocaine base (crack)
Medical brands
Goprelto, Numbrino (4% nasal solution)
Street names
Coke, blow, snow; crack, rock
Drug class
Stimulant; local anesthetic
US legal status
Schedule II
How it is used
Snorted, smoked (crack), or injected
Onset
Seconds (smoked or injected) to minutes (snorted)
Duration
5 to 90 minutes
Half-life
About 1 hour
Reversal agent
None

What is cocaine?

Cocaine blocks the reuptake of dopamine, norepinephrine, and serotonin, which produces euphoria and stimulation. It also blocks nerve signals, which made it the first local anesthetic. FDA-approved 4% nasal solutions are still used to numb and shrink the lining of the nose before procedures.[1][2]

Powder cocaine is cocaine hydrochloride, usually snorted. Crack is cocaine processed into a base that can be smoked, reaching the brain faster and more intensely.

Cocaine effects and how long they last

Cocaine causes euphoria, energy, talkativeness, alertness, and reduced need for sleep and food, along with a fast heart rate, high blood pressure, dilated pupils, and raised temperature.[2]

The high is short: 15 to 30 minutes when snorted and 5 to 10 minutes when smoked. This short duration drives repeated use in binges.

Cocaine side effects and risks

Heart: cocaine is a leading cause of drug-related heart attacks, even in young people without heart disease. It also causes dangerous heart rhythms, aortic tears, and strokes.[2]

Other harms: nosebleeds and damage to the nasal septum from snorting, lung damage from smoking crack, seizures, paranoia, and psychosis.

Levamisole: a deworming drug often used to cut cocaine can destroy white blood cells and cause skin tissue to die.

Warning: Cocaine is frequently contaminated with fentanyl. People who do not use opioids have no tolerance, and many cocaine-related deaths now involve fentanyl. Test with fentanyl test strips and carry naloxone.

Cocaine interactions: what is dangerous to mix with it

Combined withWhat happensRisk level
AlcoholForms cocaethylene, more toxic to the heart than either drugHigh risk
Heroin or fentanyl ("speedball")Overdose when cocaine wears off; heart strainVery high risk
Other stimulantsExtreme heart strain, overheatingVery high risk
MAOIsDangerous rise in blood pressurePotentially fatal
Beta-blockers (in emergencies)May worsen blood pressure in cocaine toxicityClinicians use caution

This is not a full list. Unregulated drugs often contain other substances, which makes any combination less predictable.

Cocaine overdose: signs and what to do

Cocaine overdose can cause chest pain, a racing or irregular heartbeat, very high temperature, severe agitation, seizures, stroke, and sudden collapse. Heart attack can happen even with first-time use.[2]

If someone may be overdosing

  • Call 911 for chest pain, a seizure, trouble breathing, signs of a stroke (face drooping, weakness on one side, slurred speech), a very high body temperature, or if the person collapses.
  • Move them somewhere cool and calm, loosen tight clothing, and cool the skin with water. Do not try to hold them down.
  • If they become unresponsive or their breathing slows, give naloxone. Street stimulants are often contaminated with fentanyl.
  • For advice when the person is awake and stable, call Poison Help at 1-800-222-1222.

Is cocaine addictive, and what is withdrawal like?

Cocaine is highly addictive. Withdrawal is mainly psychological but can be severe and is a common trigger for relapse.[2]

  1. Hours to daysCrashExhaustion, depression, increased appetite, cravings.
  2. Weeks 1 to 10WithdrawalLow mood, poor concentration, irritability, cravings.
  3. MonthsExtinctionCravings triggered by cues can persist for months.

There is no FDA-approved medicine for cocaine use disorder. Contingency management and cognitive behavioral therapy have the strongest evidence.[2]

Where can someone get help with cocaine use?

  • SAMHSA National Helpline: 1-800-662-4357. Free, confidential, 24 hours a day, in English and Spanish. It gives referrals to local treatment and support.[6]
  • FindTreatment.gov: a federal locator for state-licensed treatment programs, searchable by location, payment, and type of care.[7]
  • 988 Suicide and Crisis Lifeline: call or text 988 for a mental health or substance use crisis.
  • Your own clinician: a primary care doctor can screen, treat, and refer, and can discuss medicines that support recovery where they exist.

Common questions about cocaine

Is cocaine used in medicine?

Yes, as a 4% nasal solution to numb and shrink the nasal lining before procedures. It is only used by clinicians.

How long does cocaine stay in your system?

Cocaine itself clears in hours, but its metabolite benzoylecgonine is detectable in urine for 2 to 4 days, and longer after heavy use.

Why is cocaine with alcohol dangerous?

The liver combines them into cocaethylene, which lasts longer and is more toxic to the heart.

Can naloxone help in a cocaine overdose?

Naloxone does not reverse cocaine, but give it if the person is unresponsive or breathing poorly, because fentanyl is often present.

What is the difference between crack and cocaine?

Crack is cocaine converted into a smokable base. It reaches the brain faster, producing a shorter, more intense high and a higher risk of addiction.

Sources

  1. Goprelto (cocaine) prescribing information. DailyMed, US National Library of Medicine.
  2. Cocaine DrugFacts. National Institute on Drug Abuse.
  3. Controlled Substance Schedules. DEA Diversion Control Division.
  4. 21 U.S.C. 844, Penalties for simple possession. Legal Information Institute, Cornell Law School.
  5. 21 U.S.C. 841, Prohibited acts A (trafficking penalties). Legal Information Institute, Cornell Law School.
  6. National Helpline. Substance Abuse and Mental Health Services Administration.
  7. FindTreatment.gov. Substance Abuse and Mental Health Services Administration.
  8. International drug control conventions. United Nations Office on Drugs and Crime.
Read the Cocaine guideKey takeaways, quick facts, and answers to common questions.

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In an emergency in the US, call 911. Poison Help: 1-800-222-1222.