What Is the M367 Pill? A Complete Guide to This Common Pain Reliever

The M367 pill is a combination prescription medication that contains 10 mg of hydrocodone bitartrate and 325 mg of acetaminophen. Commonly white, capsule-shaped, and imprinted with “M367,” this pill is typically prescribed to treat moderate to severe pain. As a Schedule II controlled substance, it carries a significant risk for physical and psychological dependence, particularly when used outside of medical supervision.

Understanding the M367 pill’s ingredients, uses, side effects, and risks is essential for anyone taking or considering this opioid medication. 

In this article, you will learn:

• What is the M367 pill?
• How does the M367 pill work?
• What are the risks and side effects of the M367 pill?
• Is the M367 pill addictive?
• How to recognize the signs of overdose

What Is the M367 Pill?

The M367 pill is a hydrocodone-acetaminophen combination medication. Hydrocodone is a potent opioid pain reliever, while acetaminophen (the active ingredient in Tylenol) is a non-opioid pain reliever and fever reducer.

The M367 pill contains:

• Hydrocodone bitartrate (10 mg): An opioid analgesic that acts on the central nervous system (CNS) by binding to opioid receptors to block pain signals.
• Acetaminophen (325 mg): Enhances pain relief by reducing how the body perceives pain and decreasing fever, though it does not carry the euphoric feeling often associated with opioids.

This combination medication is commonly prescribed for conditions such as:[1]

• Injury-related pain
• Post-surgical pain
• Chronic pain conditions
• Severe dental or musculoskeletal pain

How Does It Work?

The opioid component in M367, hydrocodone, binds to specific opioid receptors in the brain and spinal cord, altering the brain’s response to pain.[2] Acetaminophen complements this by alleviating pain through non-opioid mechanisms. Together, they offer effective pain relief for short-term pain or chronic pain management under a doctor’s care.

However, the central nervous system depressant effects of hydrocodone can lead to extreme drowsiness, slow breathing, and respiratory depression in higher doses, especially when combined with alcohol or other CNS depressants.

Common Uses of the M367 Pill

The M367 pill is typically prescribed to:[1]

• Treat moderate to severe pain when non-opioid pain relievers are insufficient.
• Aid in pain management post-surgery or after major injury.
• Provide short-term relief in chronic pain cases, under medical supervision.
  

It is not intended for long-term use due to the risk of physical dependence and opioid use disorder (OUD).

Risks and Side Effects of Hydrocodone and Acetaminophen

While the M367 pill can relieve pain effectively, it also comes with significant health risks.

The common side effects of the M367 pill include:[1]

• Drowsiness
• Nausea
• Constipation (especially chronic constipation with long-term use)
• Dizziness
• Vomiting

The serious side effects of hydrocodone and acetaminophen include:[1]

• Respiratory depression
• Hydrocodone overdose
• Slow or irregular heartbeat
• Severe allergic reactions
• Liver damage (due to high doses of acetaminophen)
  

Immediate medical attention is required if a user experiences slow breathing, loss of consciousness, or confusion—signs of an opioid overdose.

The Potential for M367 Pill Abuse and Dependence

The hydrocodone in the M367 pill is a Schedule II controlled substance as classified by the Drug Enforcement Administration (DEA). This means it has a high potential for abuse, addiction, and physical dependence.

Regular or long-term use—even at the prescribed dosage—can lead to:

• Tolerance (needing more of the drug for the same effect)
• Withdrawal symptoms when stopping
• Psychological dependence
• Opioid use disorder (OUD)
  

Common hydrocodone withdrawal symptoms include:[3]

• Muscle aches
• Irritability
• Nausea and vomiting
• Insomnia
• Anxiety

If you or a loved one is experiencing opioid withdrawal, you should seek help from a medical detox center. Overcoming withdrawal can be difficult and painful, but detox programs and addiction treatment centers make it much easier on your mind and body through medications and medical care.

The Opioid Epidemic and M367

The United States is in the grip of an opioid epidemic, with prescription opioids like hydrocodone contributing to rising addiction and overdose rates. According to the CDC, in 2021 alone, over 80,000 drug overdose deaths involved opioids, including both prescription medications and illicit drugs like fentanyl.[4]

The misuse of hydrocodone-containing medications like M367 plays a role in this crisis. Patients are urged to take these medications strictly under the guidance of a healthcare provider and to explore alternative pain management options when possible.

Recognizing a Hydrocodone Overdose

An overdose is a medical emergency. Symptoms may include:[5]

• Extreme drowsiness
• Slow or stopped breathing
• Blue lips or fingertips
• Cold, clammy skin
• Loss of consciousness
  

If these occur, call emergency services immediately. Opioid antagonists like naloxone (Narcan) can reverse the effects if administered quickly. Without treatment, opioid overdoses are life-threatening. 

Counterfeit M367 Pills and Street Risk

Another growing concern is counterfeit pills being sold illegally that mimic M367 but may contain fentanyl or other dangerous substances. These fake pills pose a significant risk of overdose and death. Always obtain medications through licensed pharmacies and follow your doctor’s guidance.

Drug Interactions

The M367 pill can interact with several other medications, increasing the risk of side effects or overdose.

Avoid combining with:

• Alcohol
• Other opioid medications
• Central nervous system depressants (like benzodiazepines)
• Certain antidepressants or anticonvulsants
  

Always share your medical history with your healthcare provider, including any mental health disorders or chronic pain conditions you may have.

Managing Withdrawal Symptoms and Opioid Addiction

For those who become dependent or addicted to opioid medication, there is help. Medication-assisted treatment (MAT), combined with behavioral therapy and group therapy sessions, is the most effective path to recovery.

Treatment for opioid addiction may include:

• Buprenorphine or methadone to reduce cravings
• Naltrexone, an opioid antagonist to prevent relapse
• Counseling and support groups
• Ongoing mental health care

Safer Pain Management Alternatives

Because of the significant health risks of M367 and other opioid medications, patients and providers often explore alternative pain management options, including:

• Non-opioid pain relievers (like ibuprofen, naproxen, or acetaminophen tablets)
• Physical therapy
• Cognitive behavioral therapy (CBT)
• Massage therapy
• Acupuncture
• Nerve blocks
• Antidepressants or anticonvulsants for chronic pain syndromes
  

Combining medical treatments with holistic care can often reduce reliance on opioids for managing pain.

Is the M367 Pill Right for You?

The M367 pill is a powerful tool for pain relief, especially in cases of moderate to severe pain that other medications cannot control. However, the risks—including opioid overdose, addiction, and drug interactions—must be taken seriously.

If you or a loved one is prescribed M367:

• Use it exactly as prescribed
• Never take higher doses
• Be alert to signs of dependence
• Explore non-opioid and non-medication alternatives when possible
  

Consult a healthcare provider before starting or stopping this medication, and never share it with others. With careful use and medical supervision, the M367 pill can be part of a safe and effective chronic pain management plan.

Get Connected to Hydrocodone Addiction Treatment 

If you or a loved one abuses the M367 pill, it’s time to seek professional help. At THC Recovery, we can help you overcome hydrocodone addiction using medical detox, evidence-based behavioral therapies, and peer support. 

Contact us today for more information on how our hydrocodone addiction treatment center works.

Frequently Asked Questions (FAQ) About the M367 Pill

1. Is it safe to drive while taking the M367 pill?

No, it is not recommended to drive or operate heavy machinery while taking the M367 pill. Hydrocodone can impair your judgment, coordination, and reaction time, even if you’re used to the medication. Wait to see how your body reacts and speak with your healthcare provider before resuming activities that require full alertness.

2. Can I take M367 with over-the-counter pain relievers like ibuprofen or naproxen?

In some cases, doctors may recommend combining M367 with non-opioid pain relievers like ibuprofen for added pain relief, particularly in chronic pain conditions. However, you should never combine medications without consulting your healthcare provider, as drug interactions can increase the risk of side effects or liver damage.

3. How long does the M367 pill stay in your system?

Hydrocodone can typically be detected in urine for up to 3–4 days after the last dose, and acetaminophen for about 24 hours. However, detection times may vary based on metabolism, liver function, dosage, and frequency of use. This is especially important if you’re subject to drug screening.

4. What should I do if I miss a dose of M367?

If you miss a dose, take it as soon as you remember—unless it’s almost time for your next scheduled dose. In that case, skip the missed dose and return to your normal schedule. Do not double the dose, as this increases the risk of opioid overdose and serious side effects.

5. Can long-term use of M367 affect mental health?

Yes. Prolonged use of opioids like hydrocodone has been associated with increased risk of depression, anxiety, and other mental health disorders. Opioids can alter the brain’s reward system, making it more difficult to feel pleasure naturally. If you notice mood changes, it’s important to consult a healthcare professional.

6. Is M367 safe during pregnancy or breastfeeding?

M367 is not recommended during pregnancy, as opioids can cause neonatal opioid withdrawal syndrome (NOWS) in newborns. During breastfeeding, hydrocodone may pass into breast milk and cause serious breathing problems in infants. Always discuss risks and alternatives with your doctor if you are pregnant or nursing.

References:

1. Medline Plus: Hydrocodone
2. The National Library of Medicine (NLM): Hydrocodone
3. The National Library of Medicine (NLM): Opioid withdrawal
4. The Centers for Disease Control and Prevention (CDC): Understanding the Opioid Overdose Epidemic
5. The Substance Abuse and Mental Health Services Administration (SAMHSA): What is Opioid Overdose? Treatments & Prevention