The white M367 pill is a prescription opioid pain medication that contains hydrocodone bitartrate 10 mg and acetaminophen 325 mg. It is a white, oblong tablet with the imprint “M367” on one side. Drugs.com identifies the M367 pill as a 15 mm white capsule shaped or oblong tablet supplied by Mallinckrodt Pharmaceuticals and classifies it as a Schedule II controlled substance, meaning it has a high potential for abuse and dependence.
For someone who has been prescribed this medication, M367 may be used to treat pain that is serious enough to require an opioid. But for someone taking it without a prescription, taking more than directed, or buying pills outside a pharmacy, the risks can become serious fast.
Hydrocodone affects the brain and nervous system by changing how pain is felt. It can also create drowsiness, relaxation, and in some cases, euphoria. That is part of why medications like M367 can become habit forming. Acetaminophen, the second ingredient, is not an opioid, but it can damage the liver when too much is taken. The FDA warns that acetaminophen is found in many prescription and over the counter products, and taking too much can lead to liver failure or death.
For people who are worried about their own use, or worried about a loved one, understanding what the white M367 pill is can help separate facts from assumptions.
What Is the White M367 Pill?
The white M367 pill is a combination pain medication. It contains hydrocodone and acetaminophen. Hydrocodone is the opioid part of the medication. Acetaminophen is the non opioid pain reliever that is also found in Tylenol.
| Pill Feature | Details |
|---|---|
| Imprint | M367 |
| Color | White |
| Shape | Capsule shaped or oblong |
| Size | 15 mm |
| Active ingredients | Hydrocodone bitartrate 10 mg and acetaminophen 325 mg |
| Drug class | Narcotic analgesic combination |
| Controlled substance status | Schedule II |
| Availability | Prescription only |
| Common use | Pain relief |
The 10/325 strength means the pill contains 10 mg of hydrocodone and 325 mg of acetaminophen. This is one of the stronger commonly prescribed hydrocodone and acetaminophen tablet strengths.
A real M367 pill should come from a licensed pharmacy and match the prescription bottle. If a pill was found loose, bought online, purchased from someone else, or kept in an unlabeled container, it should not be assumed safe.
Is M367 Hydrocodone?
Yes. M367 is a hydrocodone and acetaminophen tablet. It contains 10 mg of hydrocodone bitartrate and 325 mg of acetaminophen.
Hydrocodone is an opioid pain reliever. It can reduce pain, but it can also slow breathing, cause sedation, and lead to physical dependence. Acetaminophen helps with pain relief, but it adds a separate risk because too much acetaminophen can harm the liver.
This is why taking multiple M367 pills can be dangerous in more than one way. The hydrocodone can increase the risk of overdose, while the acetaminophen can increase the risk of liver injury.
What Is the M367 Pill Used For?
Doctors may prescribe hydrocodone and acetaminophen for moderate to severe pain when other options are not enough. It may be used after surgery, injury, dental procedures, or certain painful medical conditions.
When used as prescribed, the goal is pain control. When misused, the reason for use often changes. A person may begin taking it to feel calm, numb emotional pain, sleep, escape stress, or avoid withdrawal symptoms. That shift can be an early warning sign that the medication is becoming more than pain treatment.
Prescription use and addiction are not the same thing. Some people take M367 as directed and never develop an opioid use disorder. But the risk increases when someone takes higher doses, takes it more often than prescribed, mixes it with other substances, or continues using it after the original medical reason has passed.
What Does the White M367 Pill Feel Like?
A person who takes M367 may feel pain relief, relaxation, sleepiness, warmth, or calm. Some people also experience nausea, constipation, dizziness, itching, or mental fog.
When someone misuses hydrocodone, the medication may produce a euphoric effect. That feeling can reinforce repeated use, especially for someone dealing with stress, trauma, anxiety, grief, or untreated mental health symptoms.
Over time, the body can build tolerance. This means the same amount may not feel as strong as it once did. A person may then take more to chase the same effect or to avoid feeling sick. That pattern can lead into dependence and addiction.
Side Effects of the M367 Pill
The white M367 pill can cause several side effects, even when taken as prescribed.
Common side effects may include nausea, vomiting, constipation, dizziness, drowsiness, sweating, itching, dry mouth, and lightheadedness.
More serious side effects can include confusion, severe sedation, slowed breathing, fainting, low blood pressure, allergic reaction, liver injury, and overdose.
The risk becomes higher when M367 is mixed with alcohol, benzodiazepines, sleep medications, muscle relaxers, other opioids, or other drugs that slow the central nervous system.
Can the M367 Pill Cause an Overdose?
Yes. M367 can cause an overdose because it contains hydrocodone. Opioid overdose can happen when breathing slows down too much or stops. This risk is higher when someone takes more than prescribed, uses opioids after a period of abstinence, mixes substances, or takes a pill from an unsafe source.
Warning signs of opioid overdose may include:
- Slow or shallow breathing
- Extreme sleepiness
- Blue or gray lips or fingertips
- Choking, snoring, or gurgling sounds
- Pinpoint pupils
- Limp body
- Cold or clammy skin
- Inability to wake up
Naloxone can temporarily reverse the effects of an opioid overdose. The DEA describes naloxone as a medicine that can rapidly reverse opioid overdose by blocking the effects of opioids and helping restore breathing when breathing has slowed or stopped.
Even if naloxone is used, 911 should still be called. Naloxone does not treat acetaminophen toxicity, and overdose symptoms can return.
M367 and Acetaminophen Liver Risk
One part of M367 that people sometimes overlook is acetaminophen. Because acetaminophen is available over the counter, people may assume it is harmless. But taking too much can cause severe liver damage.
The FDA says acetaminophen is found in many prescription and over the counter medications, and people should avoid using more than one acetaminophen containing product at a time. The FDA also states that adults and children 12 and older should not take more than 4,000 mg of acetaminophen in 24 hours unless directed by a medical professional.
This matters with M367 because each tablet contains 325 mg of acetaminophen. Someone taking extra pills, drinking alcohol, or also using cold medicine, flu medicine, or other pain relievers may accidentally take too much acetaminophen.
Counterfeit M367 Pills
Counterfeit pills are one of the most dangerous risks connected to prescription pill misuse. A pill may look like a real M367 tablet but contain fentanyl, nitazenes, methamphetamine, or other unknown substances.
The DEA warns that people should not rely on appearance alone to determine whether a pill is real. According to the DEA’s One Pill Can Kill campaign, the only safe medications are those prescribed by a trusted medical professional and dispensed by a licensed pharmacist.
This is important because counterfeit pills can be made with pill presses and designed to look like legitimate prescriptions. Reuters reported that DEA laboratory testing has found that seven out of ten fentanyl laced fake pills tested contained a potentially deadly dose.
A pill is not safe just because it has an imprint. If it did not come from your own prescription bottle from a licensed pharmacy, do not take it.
M367 vs M365 and M366
M367 is often searched alongside M365 and M366 because all three are white hydrocodone and acetaminophen tablets with similar markings.
| Imprint | Common Strength |
|---|---|
| M365 | Hydrocodone 5 mg and acetaminophen 325 mg |
| M366 | Hydrocodone 7.5 mg and acetaminophen 325 mg |
| M367 | Hydrocodone 10 mg and acetaminophen 325 mg |
M367 contains the highest hydrocodone dose in this comparison. That does not make it better. It means the opioid dose is stronger, which may increase the risk of sedation, misuse, dependence, and overdose.
M367 vs G037
M367 and G037 are both white hydrocodone and acetaminophen pills. They are commonly compared because they can look similar and may contain the same active ingredient strength.
| Pill | Common Identification | Active Ingredients |
|---|---|---|
| M367 | White oblong hydrocodone pill | Hydrocodone 10 mg and acetaminophen 325 mg |
| G037 | White oval hydrocodone pill | Hydrocodone 10 mg and acetaminophen 325 mg |
The main difference is the imprint and manufacturer. The risks are similar because both contain hydrocodone and acetaminophen. Neither should be taken unless it was prescribed to you.
Can You Get Addicted to M367?
Yes. Hydrocodone can be addictive. Addiction does not always begin with someone intending to misuse a medication. Sometimes it starts with a legitimate prescription, then slowly changes as tolerance, dependence, or emotional reliance develops.
- A person may be developing a problem with M367 if they:
- Take more than prescribed
- Run out early
- Feel anxious when they do not have pills
- Use it to relax, sleep, or cope emotionally
- Mix it with alcohol or other drugs
- Hide or lie about their use
- Try to stop but cannot
- Feel sick when they miss a dose
- Keep using despite consequences
Opioid addiction is not a character flaw. It is a treatable condition that affects the brain, body, behavior, and emotional health.
M367 Withdrawal Symptoms
Hydrocodone withdrawal can happen when someone who has been taking opioids regularly stops suddenly or reduces their dose. Withdrawal is not usually life threatening in the same way overdose can be, but it can feel overwhelming and may lead someone back to use.
M367 withdrawal symptoms may include anxiety, restlessness, sweating, chills, runny nose, watery eyes, muscle aches, stomach cramps, nausea, vomiting, diarrhea, insomnia, irritability, and cravings.
For some people, withdrawal feels like a severe flu mixed with panic and exhaustion. Medical detox can help reduce discomfort, monitor symptoms, and lower the risk of relapse during the early stage of recovery.
When M367 Use Becomes a Bigger Problem
The line between prescription use and opioid misuse can become blurry. Someone may start by taking one extra pill on a bad pain day. Later, they may begin using it to manage stress, grief, depression, or anxiety. Eventually, they may feel like they need the medication just to feel normal.
This is often where shame keeps people quiet. They may think they should be able to stop on their own. They may be afraid of being judged. They may believe treatment is only for people using heroin or fentanyl.
But prescription opioid addiction deserves real care. Hydrocodone addiction can disrupt relationships, work, finances, physical health, and emotional stability. It can also raise the risk of transitioning to other opioids if pills become too expensive, unavailable, or ineffective.
Treatment for Hydrocodone Addiction
Treatment for hydrocodone addiction should support the whole person, not just the drug use. At Phoenix Rising Recovery, substance use treatment is built around helping people rise above addiction with individualized, trauma informed care. Phoenix Rising offers detox, residential treatment, PHP, IOP, outpatient care, sober living support, therapy, and aftercare planning in the Palm Springs area.
For someone struggling with M367, treatment may include medical detox, clinical therapy, relapse prevention, trauma work, family support, holistic care, and planning for life after treatment.
Detox can help the body stabilize after opioid use. Residential care can give someone a safer environment away from daily triggers. Therapy can help address the reasons opioid use continued, including pain, trauma, stress, depression, anxiety, or unresolved grief. Aftercare can help people stay connected to support after leaving treatment.
Recovery is not just about stopping a pill. It is about learning how to live without needing that pill to get through the day.
If the white M367 pill has become hard to stop, Phoenix Rising Recovery can help you take the next step safely. Our Southern California addiction treatment programs support people struggling with prescription opioids through detox, residential care, therapy, and long term recovery planning.
What to Do If You Find a White M367 Pill
If you find a white M367 pill and it is not in a labeled prescription bottle, do not take it. Pill identifiers can help identify what a pill may be, but they cannot prove that a pill is real or safe.
Keep the pill away from children and pets. Do not give it to someone else. Consider using a pharmacy or law enforcement drug take back program. If someone has already taken it and feels unwell, call Poison Control or seek medical help. If overdose is possible, call 911 immediately and use naloxone if available.
Frequently Asked Questions About the M367 Pill
What is the white M367 pill?
The white M367 pill is a prescription hydrocodone and acetaminophen tablet. It contains hydrocodone bitartrate 10 mg and acetaminophen 325 mg.
Is M367 hydrocodone?
Yes. M367 contains hydrocodone, which is an opioid pain reliever, and acetaminophen, which is a non opioid pain reliever.
What does M367 look like?
M367 is a white, capsule shaped or oblong tablet with the imprint “M367.” Drugs.com lists it as a 15 mm tablet.
Is M367 the same as Norco?
M367 is a generic hydrocodone and acetaminophen tablet. Norco is a brand name for hydrocodone and acetaminophen. The active ingredients may be similar, but the imprint, manufacturer, and exact product may differ.
Is M367 stronger than M365?
Yes. M367 commonly contains 10 mg of hydrocodone, while M365 commonly contains 5 mg of hydrocodone. Both contain acetaminophen and both can be dangerous if misused.
Can M367 cause an overdose?
Yes. Because M367 contains hydrocodone, it can cause opioid overdose. The risk is higher when taken in high doses, mixed with alcohol or sedatives, or taken from an unsafe source.
Can you take M367 with alcohol?
No. Alcohol can increase sedation and breathing risks from hydrocodone. Alcohol can also increase the risk of liver damage when combined with acetaminophen.
Are street M367 pills safe if they look real?
No. A pill can look real and still be counterfeit. The DEA warns that people should not trust appearance alone and that safe medications come from licensed pharmacies after being prescribed by a trusted medical professional.
What are signs of M367 addiction?
Signs may include taking more than prescribed, running out early, craving the medication, using it to cope emotionally, feeling sick without it, hiding use, or being unable to stop despite consequences.
Does Phoenix Rising Recovery treat hydrocodone addiction?
Yes. Phoenix Rising Recovery provides substance use treatment services that may support people struggling with prescription opioid addiction, including hydrocodone misuse or dependence.
Sources
Drugs.com. (n.d.). M367 pill: White, capsule/oblong, 15mm. Retrieved May 15, 2026, from https://www.drugs.com/imprints/m367-3762.html
MedlinePlus. (n.d.). Hydrocodone combination products. U.S. National Library of Medicine. Retrieved May 15, 2026, from https://medlineplus.gov/druginfo/meds/a601006.html
Dowell, D., Ragan, K. R., Jones, C. M., Baldwin, G. T., & Chou, R. (2022). CDC clinical practice guideline for prescribing opioids for pain, United States, 2022. Morbidity and Mortality Weekly Report, 71(3), 1–95. https://www.cdc.gov/mmwr/volumes/71/rr/rr7103a1.htm
U.S. Food and Drug Administration. (2011, January 13). FDA drug safety communication: Prescription acetaminophen products to be limited to 325 mg per dosage unit; boxed warning will highlight potential for severe liver failure. https://www.fda.gov/drugs/drug-safety-and-availability/fda-drug-safety-communication-prescription-acetaminophen-products-be-limited-325-mg-dosage-unit
U.S. Drug Enforcement Administration. (n.d.). One pill can kill. Retrieved May 15, 2026, from https://www.dea.gov/onepill
California Department of Public Health. (n.d.). Fentanyl. Retrieved May 15, 2026, from https://www.cdph.ca.gov/Programs/CCDPHP/sapb/Pages/Fentanyl.aspx
Rudolph, K. E., Williams, N. T., Diaz, I., Forrest, S., Hoffman, K. L., Samples, H., Olfson, M., Doan, L., Cerda, M., & Ross, R. (2024). Associations between pain-management treatments and opioid use disorder risk among Medicaid patients. arXiv. https://arxiv.org/abs/2404.11802