Maybe it started with small things. Money missing from a drawer. A change in sleep. Eyes that looked wrong at dinner, though you couldn’t say exactly how. You’ve probably talked yourself out of it more than once, because nobody wants to believe a person they love is using.
This guide is for that moment when you stop talking yourself out of it. Below are the signs of intoxication, broken down by substance, written for family members rather than clinicians. One caution before the list: no single sign proves anything. Fatigue can look like opioid use. Stress can look like stimulants. What you’re watching for is a pattern, and a change from the person you know.
Alcohol
The most familiar one, and still worth spelling out. Slurred or careless speech, unsteady walking, loud or looser behavior than usual, slowed reactions, and the smell, which people who drink daily get very good at masking with mints, mouthwash, or coffee. Heavier intoxication brings glassy eyes, repetition in conversation, and memory gaps the next day.
The tell with alcohol is often quantity concealment rather than the buzz itself. Empty bottles in odd places. Drinking before an event where drinks will be served. A person who never seems drunk but never seems fully sober either.
Cannabis
Red, heavy-lidded eyes are the classic giveaway, along with delayed responses, easy laughter that doesn’t quite match the moment, dry mouth, and a sudden appetite. The smell clings to clothes and hair, though vaping has made that far less reliable than it used to be.
With regular use, watch for the slow fade: motivation drops, hobbies go quiet, and everything runs half a step behind.
Stimulants: Cocaine, Meth, and Misused ADHD Medication
Stimulants speed the body up. Dilated pupils, fast or pressured talking, jumpiness, grinding teeth, little interest in food, and stretches of unusual energy or confidence followed by a hard crash into irritability and long sleep. Cocaine users often make repeated trips to the bathroom during a night out. Methamphetamine adds skin picking, dental problems, and days without sleep as use progresses.
The crash is frequently what families notice first. Not the high itself, but the wreckage after: a person who was electric on Saturday and can’t get off the couch on Tuesday.
Opioids: Heroin, Painkillers, and Fentanyl
Opioids slow everything down. Pinpoint pupils, even in dim light. Drowsiness that comes in waves, sometimes to the point of nodding off mid-sentence. Slurred speech, itching and scratching, flushed skin, and constipation complaints. Someone on opioids may drift contentedly in a way that seems detached from everything around them.
Know the overdose signs, because minutes matter: unresponsiveness, breathing that is slow, shallow, or stopped, choking or gurgling sounds, blue or gray lips and fingertips, and cold, clammy skin. If you see them, call 911 immediately and give naloxone (Narcan) if you have it. With fentanyl now present in most street drugs, any suspected opioid overdose is a life-threatening emergency.
Benzodiazepines: Xanax, Valium, Klonopin
Benzo intoxication looks like drunkenness without the alcohol smell. Slurred words, stumbling, poor coordination, confusion, and blackout-style memory loss. Combined with alcohol or opioids, benzos become far more dangerous, since all three slow breathing.
Hallucinogens and Ecstasy
Dilated pupils, sweating, jaw clenching, and unusual warmth toward everyone in the room point toward MDMA. LSD or psilocybin bring altered perception, staring at ordinary things, disjointed speech, and reactions to stimuli you can’t see. These highs are hard to hide while they’re happening; the challenge for families is that they’re usually over before anyone gets home.
The Pattern Matters More Than Any Single Sign
Every substance list overlaps with ordinary life. Exhaustion, stress, a bad week at work, actual illness. What separates concern from coincidence is accumulation. Physical signs plus new secrecy. Mood swings plus missing money. New friends the person won’t introduce, plus a sudden allergy to questions about where they’ve been.
Trust the change, not the checklist. You know this person’s baseline better than any article does.
What to Do With What You’ve Noticed
Don’t confront someone while they’re high. It rarely goes anywhere useful, and it can escalate. Wait for a calm, sober moment, lead with concern instead of accusation, and be specific about what you’ve seen rather than what you suspect. Have information ready in case the conversation opens a door, because those windows sometimes close fast.
And get support for yourself either way. Watching someone you love change is its own kind of exhausting, and you don’t have to sort it out alone.
Profound Healing Centers Can Help
If the signs you’ve been noticing add up to something real, Profound Healing Centers in Los Angeles provides evidence-based drug and alcohol treatment in a private, comfortable setting, from medically supervised detox with 24/7 support through residential care and aftercare. Our team can answer your questions, explain the admissions process, and help you figure out the right next step for your family, with no pressure and full confidentiality. Call (818) 826-2321 today.
