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M523 Pill: A Comprehensive Guide

Clinically Reviewed by: Charee Marquez, LMFT

The M523 pill, a powerful opioid medication, has caught your attention, and you’re eager to understand its designation, uses, effects, and potential risks. At California Prime Recovery, we recognize the significance of being well-informed about medications, particularly those containing potent active ingredients like Oxycodone in the M523 pill. In this comprehensive guide, we will begin by defining what the M523 pill is, providing a clear understanding of its composition. Subsequently, we will explore its various uses, effects, and associated risks. Whether you’re a healthcare professional seeking knowledge or an individual looking for personal insights, this article aims to equip you with valuable information about the M523 pill. If you or someone you care about is facing challenges related to opioid use, pain management, or any associated concerns, we encourage you to reach out to California Prime Recovery at 866-208-2390. Our dedicated team is committed to providing confidential and supportive assistance to guide you towards recovery and improved health. Your well-being remains our utmost priority throughout this journey.

What is the M523 Pill?

The pill with the imprint M523 is white and elliptical or oval in shape. It is identified as Acetaminophen and Oxycodone Hydrochloride 325 mg / 10 mg.

  • Acetaminophen 325 mg: This is a common over-the-counter pain reliever and fever reducer.
  • Oxycodone Hydrochloride 10 mg: This is an opioid analgesic, a strong pain medication.

To truly grasp the significance of the M523 pill, we must first decipher its designation. This small, round pill is marked with the distinct imprint “M523” on one side, while the other side remains blank. The designation of the M523 pill can be broken down as follows:

  • M: The letter “M” stands as a symbol for Mallinckrodt Pharmaceuticals, a reputable pharmaceutical company recognized for its commitment to producing high-quality medications.
  • 523: The numeric code “523” serves as a unique identifier for this specific pill. It enables healthcare providers and pharmacists to differentiate it from other medications effectively.

Now that we’ve unveiled its designation, it’s important to understand that the M523 pill falls into the category of prescription drugs and belongs to the broader classification of opioid analgesics. At its core, this pill contains a potent opioid known as Oxycodone, which acts as the active ingredient responsible for its effects.

Types and Dosages

Here are some common types of oxycodone formulations and dosages:

  1. Immediate-Release (IR) Oxycodone:

    • Dosages: Immediate-release oxycodone is available in various strengths, including 5 mg, 10 mg, 15 mg, and 30 mg tablets. The typical starting dose for pain relief is 5 mg to 15 mg every 4 to 6 hours as needed.
  2. Extended-Release (ER) Oxycodone:

    • Dosages: Extended-release oxycodone formulations provide longer-lasting pain relief. Dosages can vary, and common strengths include 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 60 mg, and 80 mg tablets. Dosages are typically once or twice daily, and the appropriate strength is determined based on the individual’s opioid tolerance and pain management needs.
  3. Combination Formulations:

    • Oxycodone is sometimes combined with other medications, such as acetaminophen or aspirin, to create combination products like Percocet (oxycodone/acetaminophen) or Percodan (oxycodone/aspirin). Dosages will depend on the specific combination and strength prescribed.
  4. Oxycodone/Naloxone Formulation:

    • Some formulations include naloxone, an opioid receptor antagonist, to deter abuse. This combination is available in certain extended-release formulations.

It’s crucial for individuals prescribed oxycodone to follow their healthcare provider’s instructions carefully. Dosages should not be adjusted without consulting a healthcare professional, and the medication should be taken only as prescribed.

Understanding the Uses of the M523 Pill

Moving forward, it is crucial to explore the primary uses of the M523 pill. Oxycodone, as mentioned earlier, is the active ingredient in this medication and is renowned for its formidable pain-relieving properties. Healthcare providers frequently prescribe the M523 pill to manage various levels of pain, ranging from moderate to severe. Here are some common scenarios where the M523 pill may be recommended:

  • Post-operative Pain Management: After undergoing surgical procedures, patients often experience varying degrees of pain and discomfort. The M523 pill can serve as a valuable component of the pain management strategy in such cases. By effectively reducing pain perception, it aids in the post-operative recovery process.
  • Chronic Pain Conditions: Chronic pain conditions, such as cancer-related pain, arthritis, or persistent back pain, can significantly diminish an individual’s quality of life. In these cases, healthcare professionals may prescribe Oxycodone, found in the M523 pill, to alleviate the ongoing discomfort and enhance the patient’s overall well-being.
  • Pain Resulting from Injuries: Traumatic injuries, whether from accidents or sports-related incidents, often necessitate robust pain management. The M523 pill can be integrated into the treatment plan to help patients cope with and recover from the pain associated with such injuries.

It is crucial to emphasize that the use of the M523 pill should strictly adhere to the guidance of a qualified healthcare professional. Self-medication or misuse can lead to severe health consequences and should be avoided at all costs.

How does the M523 pill work in the body?

The M523 pill is an oval-shaped white pill with “M523” imprinted on it, containing 10 mg of Oxycodone hydrochloride. Oxycodone is an opioid analgesic that works by binding to mu-opioid receptors in the central nervous system. It modulates the perception of pain and alters the body’s response to pain signals. Oxycodone is prescribed for the management of moderate to severe pain.

Storage and Disposal

  • Storage: Keep the M523 pill in its original container and store it at room temperature away from moisture and light. Follow any specific storage instructions provided by your healthcare provider or pharmacist.
  • Disposal: Dispose of unused or expired medication properly. Many pharmacies have drug take-back programs, or you can follow local guidelines for safe disposal. Do not flush medications down the toilet unless instructed to do so.

Alcohol Use and M523 Pill

Avoid consuming alcohol while taking the M523 pill. Both oxycodone and alcohol are central nervous system depressants, and combining them can lead to increased sedation, respiratory depression, and other serious side effects. Consult your healthcare provider about the potential risks and interactions with alcohol.

Controlled Substance Classification

Oxycodone, the active ingredient in the M523 pill, is classified as a Schedule II controlled substance in the United States. Schedule II substances have a high potential for abuse, accepted medical use with severe restrictions, and a risk of severe psychological or physical dependence. It means that oxycodone is considered highly addictive and requires strict monitoring and regulation.

Always follow your healthcare provider’s instructions for the use, storage, and disposal of medications. If you have specific concerns or questions about the M523 pill, consult your healthcare provider or pharmacist for personalized guidance.

The Effects of the M523 Pill

Understanding the effects of the M523 pill is paramount for individuals who may encounter it, whether as patients or healthcare providers. The primary effect of this medication is pain relief, achieved through its interaction with the central nervous system. Let’s delve deeper into the effects of the M523 pill:

  • Pain Relief: The M523 pill operates by binding to specific receptors in the brain and spinal cord. Through this mechanism, it effectively reduces the perception of pain, offering much-needed relief to individuals grappling with moderate to severe pain.
  • Euphoria and Relaxation: Oxycodone, like other opioids, possesses the potential to induce feelings of euphoria and relaxation. While these effects can be beneficial for pain management, they also present a risk of misuse and addiction. It is essential to strike a balance between the therapeutic benefits and potential risks associated with these euphoric sensations.
  • Drowsiness and Sedation: Some individuals may experience drowsiness or sedation as a side effect of the M523 pill. This is a crucial consideration, as it implies that activities requiring a high level of alertness, such as driving or operating heavy machinery, should be avoided while taking this medication. Safety should always be a top priority.
  • Respiratory Depression: In cases of high doses or misuse, Oxycodone, found in the M523 pill, can depress the respiratory system. This is a critical concern, as it can lead to breathing difficulties and, in severe instances, be life-threatening. Proper dosage and supervision are of utmost importance to mitigate the risk of respiratory depression.

Side Effects and Risks Associated with the M523 Pill

Short-Term Side Effects of Oxycodone:

  1. Pain Relief: Oxycodone is primarily prescribed for its short-term analgesic (pain-relieving) effects.

  2. Drowsiness: A common side effect of oxycodone is drowsiness or sedation, which can impair alertness and coordination.

  3. Euphoria: Oxycodone, like other opioids, can produce feelings of euphoria or a “high,” particularly at higher doses.

  4. Nausea and Vomiting: Gastrointestinal side effects, including nausea and vomiting, are common short-term side effects.

  5. Constipation: Opioids like oxycodone can cause constipation, and this side effect may be managed with lifestyle changes or medications.

  6. Dizziness: Some individuals may experience dizziness or lightheadedness when taking oxycodone.

  7. Itching: Opioids can cause itching or skin irritation as a side effect.

  8. Respiratory Depression: In high doses, oxycodone can suppress respiratory function, leading to slowed or shallow breathing. This is a serious side effect that requires immediate medical attention.

  9. Confusion: Some individuals may experience confusion or cognitive impairment.

Long-Term Side Effects of Oxycodone:

  1. Physical Dependence: Prolonged use of oxycodone can lead to physical dependence, where the body adapts to the presence of the drug, and withdrawal symptoms may occur if the medication is suddenly stopped.

  2. Tolerance: With continued use, individuals may develop tolerance, requiring higher doses to achieve the same pain relief.

  3. Addiction: Long-term use of opioids like oxycodone carries a risk of developing addiction, characterized by compulsive drug-seeking behavior despite negative consequences.

  4. Constipation: Chronic constipation can persist with long-term use of opioids.

  5. Hormonal Effects: Opioids may affect hormonal systems, potentially leading to changes in testosterone levels in men and menstrual irregularities in women.

  6. Osteoporosis: Prolonged use of opioids may be associated with a higher risk of osteoporosis and fractures.

  7. Immune System Effects: Opioids may have immunosuppressive effects, potentially impacting the body’s ability to fight infections.

  8. Cognitive Effects: Long-term opioid use may be associated with cognitive impairment and changes in mood.

It’s important for individuals using oxycodone to be aware of these potential side effects and to use the medication under the supervision and guidance of a healthcare professional.

As with any medication, the M523 pill carries its fair share of risks. It is imperative to be aware of these risks to make informed decisions about its use and to prioritize your health and well-being. Here are some of the risks associated with the M523 pill:

  • Addiction: One of the most significant risks linked to the M523 pill is the potential for addiction. The euphoric effects it produces can lead to dependency if not taken as prescribed. Addiction can have devastating consequences on an individual’s life and requires professional intervention and treatment.
  • Overdose: Taking higher doses of the M523 pill than prescribed or combining it with other substances, especially alcohol, can result in an overdose. Opioid overdoses can be fatal if not promptly addressed through emergency medical intervention. The risk of overdose underscores the importance of adhering strictly to prescribed dosages.
  • Withdrawal Symptoms: Individuals who become dependent on Oxycodone, the active ingredient in the M523 pill, may experience withdrawal symptoms when attempting to discontinue its use. These symptoms can include nausea, sweating, anxiety, and general discomfort. Seeking medical guidance during withdrawal is crucial to managing these symptoms effectively.
  • Respiratory Issues: Respiratory depression, previously mentioned, is a severe risk associated with Oxycodone-containing medications like the M523 pill. Breathing difficulties can escalate rapidly, making it a life-threatening concern that demands immediate medical attention.
  • Misuse and Diversion: The M523 pill is sometimes sought after by individuals seeking to misuse it or sell it on the black market. This illicit activity poses significant risks to public health and safety, contributing to the opioid crisis. Proper medication storage and disposal are essential to prevent misuse and diversion.

It is essential to use the M523 pill responsibly, strictly as prescribed by a healthcare provider. Open communication with your healthcare professional regarding any concerns or side effects is crucial to ensuring your safety and well-being.

Statistics Related to the M523 Pill

  • In 2019, approximately 50,000 opioid overdose deaths occurred in the United States.
  • Prescription opioids, including medications like the M523 pill containing Oxycodone, contributed significantly to these overdose fatalities.
  • The opioid crisis continues to pose a substantial public health concern, emphasizing the importance of responsible medication use and awareness.
  • Education, support, and intervention are crucial for individuals at risk of opioid misuse or addiction.

Find Help and Support

The M523 pill, with its active ingredient Oxycodone, plays a significant role in managing pain associated with various medical conditions. However, it is vital to approach this medication with caution and responsibility, given its potential for misuse and the risks associated with opioids. By understanding its designation, uses, effects, and risks, you are better equipped to make informed decisions regarding your health and well-being.

Seeking Treatment? We Can Help!

Should you require assistance, support, or guidance related to the M523 pill, opioid addiction, pain management, or any related concerns, California Prime Recovery is here to help. Reach out to us at 866-208-2390 for confidential and compassionate assistance. Your health and recovery are our top priorities, and we are dedicated to providing you with the care you deserve. Also, check out our blogs posted weekly on Medium.


No, the M523 pill contains Oxycodone, a potent opioid, and is available only by prescription from a qualified healthcare provider. It cannot be obtained without a doctor’s prescription.

Signs of opioid addiction may include increased tolerance, withdrawal symptoms, neglecting responsibilities, and spending a significant amount of time obtaining or using opioids. Seeking professional help is crucial for individuals struggling with addiction.

It is not recommended to consume alcohol while taking the M523 pill or any medication containing Oxycodone. Alcohol can potentiate the depressant effects of opioids, increasing the risk of respiratory depression and other adverse effects. Always consult your healthcare provider for specific guidance.

Store the M523 pill in a secure place, out of reach of children, pets, and individuals who may misuse it. Keep it at room temperature, away from moisture, heat, and direct sunlight. Proper storage is essential to prevent unauthorized access and maintain the medication’s effectiveness.

If you suspect an overdose, it is crucial to act quickly and call 911 immediately. Administering naloxone, if available, can be life-saving while waiting for medical assistance. Recognizing the signs of overdose, such as extreme drowsiness, shallow breathing, and loss of consciousness, is essential for timely intervention.

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