What Does Cocaine Look Like? The Fentanyl Risk and What to Do in an Overdose

Powder cocaine is usually a white to off-white crystalline powder. The texture ranges from fine and flour-like to coarse and slightly clumpy, sometimes with small pearlescent flecks. Crack cocaine looks different: irregular off-white, tan, or yellowish chunks, often compared to soap shavings or small rocks. Neither description establishes what a particular sample contains, and in the current drug supply that gap can be fatal.

Powder cocaine

Cocaine hydrochloride is a salt, which is why it appears as a powder and dissolves in water. Color runs from bright white to dull off-white or faintly beige. Some batches feel silky; others are gritty or form small clumps in humidity.

Street cocaine may or may not be cut, and the person using it cannot tell which. In DEA's 2024 laboratory data, most seized cocaine had no cutting agent, and average powder-cocaine (cocaine HCl) purity in its signature-program samples was 88%. When a cutting agent was found, the most common was levamisole, a veterinary deworming drug that can suppress white blood cell production, though it has become less common over the past five years. High purity is its own risk, because a familiar amount can be stronger than expected. None of this changes how the powder looks.

Crack cocaine

Crack is cocaine in a smokable base form. The result is hard, brittle chunks, off-white to tan, sometimes with a waxy or crumbly appearance. The name comes from the sound the material makes when heated.

Chemically it is the same drug delivered by a faster route. Smoking produces a more intense, shorter effect than snorting, which is why crack tends to drive compulsive repeat use and why the two forms differ so much in how quickly problems develop.

Why you cannot identify a substance by looking at it

Fentanyl is active in amounts measured in micrograms. A quantity capable of killing a person without opioid tolerance is smaller than what the eye can reliably distinguish in a powder, and mixing at that scale is notoriously uneven. This is the "chocolate chip cookie" problem, where the dangerous material clusters in some spots and not others. Counterfeit pills carry the same hidden risk; our guide to green Xanax bars covers that side of the supply.

Fentanyl test strips can detect fentanyl in a prepared sample and are legal in most states (check your state's law), though a negative result cannot rule out contamination in an unmixed portion, and strips do not detect every fentanyl analog. They reduce risk. They do not eliminate it.

Recognizing a stimulant overdose

Cocaine overdose, sometimes called overamping, does not look like an opioid overdose. It looks like a body running too hot and too fast:

• Chest pain, pressure, or a racing or irregular heartbeat
• Severe agitation, paranoia, or panic
• Very high body temperature, heavy sweating, hot dry skin
• Seizures, tremors, or muscle rigidity
• Severe headache, trouble speaking, weakness on one side: signs of stroke
• Difficulty breathing, confusion, or loss of consciousness

Signs that concern families

People searching this topic are often trying to confirm a suspicion. Physical items sometimes found include small plastic baggies with residue, rolled bills or cut straws, razor blades and mirrors or other hard flat surfaces, small glass pipes or pieces of steel wool, and burnt spoons or discolored foil.

Behavioral patterns matter more than objects: bursts of energy and talkativeness followed by heavy crashes and long sleep, dramatic appetite and weight loss, nosebleeds or persistent sniffing, dilated pupils, money disappearing, escalating irritability or paranoia, and a social circle that changes quickly.

None of this is proof, and objects can be misread. What they justify is a direct, non-accusatory conversation and, when the pattern holds, a professional assessment rather than an argument about evidence.

If cocaine use has become a problem

There is no FDA-approved medication for cocaine use disorder the way buprenorphine and methadone exist for opioid use disorder. Be skeptical of any program claiming a medication cure. What does have research support is behavioral treatment. Contingency management (structured incentives for verified periods of non-use), especially combined with the community reinforcement approach, had the strongest evidence among psychosocial treatments in a 2018 review of 50 trials. Cognitive behavioral therapy also helps, and treating co-occurring depression, anxiety, or trauma often matters as much as treating the stimulant use itself. The same holds for prescription stimulants, which our Ritalin, Adderall, and Vyvanse guide covers.

Withdrawal from cocaine is generally not medically dangerous, but the crash (exhaustion, heavy sleep, intense cravings, and depressed mood that can include suicidal thinking) deserves support rather than solitude. If thoughts of self-harm appear during a crash, call or text 988. Our guide to the levels of care for substance use treatment explains how a treatment setting gets chosen, the treatment options guide helps narrow it down, and SAMHSA's National Helpline (1-800-662-4357) provides free, confidential referrals 24/7.