M30 Pill: Blue 30s, Pressies, Counterfeit Pills & Withdrawal

A legitimate M30 pill is oxycodone hydrochloride 30 mg, a Schedule II opioid. DailyMed describes the Mallinckrodt product as a light-blue round tablet with a boxed M on one side and 30 above a bisect on the other. In the illicit drug market, M30, M30s, 30s and blues have also become major names for counterfeit opioid pills.

Someone looking up “M30s” may already be using blue pills every day, dealing with withdrawal, worrying about a urine test, or trying to understand why a pill sold as oxycodone caused much deeper sedation than expected.

M30 at a Glance

Why M30s Are Called 30s, Blues, Oxy and Roxy

DEA lists 30s, Blues, Oxy and Roxy among oxycodone street names. The legitimate M30 tablet gives those terms a strong visual anchor because it is a light-blue 30 mg oxycodone pill.

A person may say they use “blues” every day without ever saying oxycodone. In treatment, that language should be translated into the pill believed to be used, source, frequency, route, withdrawal symptoms, overdose history and whether the supply came from a pharmacy or the street market.

M30 is unusually important because the counterfeit version has developed its own identity. The same word can describe a legitimate prescription tablet or a pressed pill made to look like one.

Terms such as M30s, blue 30s, 30s and blues can be useful parts of an opioid-use history because they describe what a person believed they were taking and how the pills were sold.

What Is a Counterfeit M30 or M30 Pressie?

A pressie is an illicitly pressed pill. Counterfeit M30s are made to resemble oxycodone 30 mg tablets and can carry the familiar blue color and M30-style markings without containing pharmaceutical oxycodone.

CDC describes counterfeit M30 oxycodone pills as a major counterfeit-pill form in the United States. In a 2024 MMWR analysis from one hospital, investigators identified 352 cases involving suspected counterfeit M30 pills, including 143 fentanyl exposure cases and 209 acute withdrawal cases.

The counterfeit market has become large enough that some people intentionally buy “blues” knowing they are street pills. Others may believe they are buying real oxycodone. Both patterns belong in addiction treatment because the actual opioid exposure and overdose risk can differ from the pill’s appearance.

A familiar blue tablet therefore carries two identities: what legitimate M30 is supposed to be and what the street product may actually contain.

Why Counterfeit M30s Can Cause Severe Opioid Overdose

Counterfeit M30 pills are commonly associated with illegally manufactured fentanyl. CDC reports that counterfeit M30 accounted for the majority of counterfeit pills in the clinical and public-health context it reviewed.

Fentanyl can produce rapid respiratory depression. A person may become difficult to wake, breathe slowly or irregularly, develop blue or gray skin, or lose consciousness.

In the CDC hospital series, most patients with confirmed fentanyl exposures were hospitalized, and many required intensive care. Respiratory depression and central nervous system depression were common clinical findings.

The overdose pattern can be especially dangerous for someone who believes the pill contains only oxycodone and uses an amount based on prior experience with prescription opioids.

What Heavy M30 Use Can Do to Breathing and Sleep

Oxycodone suppresses respiratory drive. At higher exposure, breathing can become slower and shallower, especially during sleep or when other depressants are present.

Opioid users may describe nodding, where the person repeatedly drifts into and out of consciousness. Nodding can be a warning sign of substantial opioid intoxication and can progress toward a life-threatening overdose.

Alcohol, Xanax and other sedatives can deepen the respiratory effect. A counterfeit pill can add a stronger opioid than the person expected.

Repeated episodes of nodding, abnormal breathing or naloxone use should move the conversation directly into opioid addiction treatment and overdose prevention.

What M30 Use Can Look Like in a Person

Opioid intoxication can appear as heavy drowsiness, slowed speech, poor attention, pinpoint pupils, nodding and slowed breathing. A person may repeatedly fall asleep during conversation and wake briefly when stimulated.

These signs are not unique to M30 and cannot identify the exact opioid. They become more meaningful when they occur alongside known blue-pill use, withdrawal, overdose or naloxone history.

Counterfeit M30 exposure can look more severe than expected because a high-potency opioid can produce rapid respiratory depression.

Visible changes such as repeated nodding, slowed breathing, severe constipation or abrupt sickness when pills run out can help families recognize opioid intoxication, dependence or overdose risk.

Constipation, Nausea and Other Body Effects

Oxycodone slows gastrointestinal movement, so constipation is one of the most common physical consequences of repeated opioid use. Chronic users may begin treating severe constipation as a normal part of daily life.

Nausea, vomiting, itching, sweating, dizziness and sedation can also occur. These effects can become more pronounced when the opioid amount changes or when a counterfeit batch has a different composition.

Long-term opioid use can also affect sleep, hormones, sexual function and mood. Long-term opioid exposure can also affect sleep, hormones, sexual function and mood, and persistent symptoms deserve medical assessment.

For someone already using M30s heavily, these symptoms are often more useful than a long explanation of why oxycodone was originally prescribed.

How Long Does M30 Stay in Your System?

A legitimate M30 contains oxycodone, so the testing timeline follows oxycodone and its metabolites. Counterfeit M30s can produce a different toxicology result because the actual drug may be different.

Oxycodone is metabolized to compounds including noroxycodone and oxymorphone. Testing can remain positive after the strongest opioid effect has ended.

See How Long Does Oxycodone Stay in Your System? for detailed urine, blood, saliva and hair testing information.

What Can Change the M30 Drug-Test Timeline?

The amount and frequency of oxycodone use can influence how long the drug and metabolites remain detectable. Repeated use can create overlapping exposure and can extend the practical window compared with one isolated dose.

Urine, blood, saliva and hair also measure different parts of the timeline. Urine usually covers a broader recent-use period, while blood and oral fluid focus more closely on recent exposure.

Hair provides a much longer retrospective window because drug is incorporated as hair grows. A roughly 90-day window is commonly used when about three months of hair growth is analyzed.

If the pill was counterfeit, the result follows the actual opioid or other drug in the pill, so a street M30 can produce a testing pattern that differs from pharmaceutical oxycodone.

What M30 Withdrawal Feels Like

Repeated opioid use can create physical dependence. When oxycodone or another opioid exposure falls, withdrawal can include restlessness, anxiety, sweating, yawning, runny nose, muscle aches, insomnia, nausea, vomiting, diarrhea and abdominal cramping.

For people using counterfeit M30s, withdrawal can be more complicated because the pills may contain fentanyl. CDC’s hospital series identified more acute withdrawal cases than confirmed fentanyl exposure cases among the suspected counterfeit M30 consultations.

A person may begin using M30s mainly to stop withdrawal. At that point, the pill is maintaining opioid dependence even if the original goal was pain relief or intoxication.

Withdrawal history, overdose history and the actual street supply should all be documented when selecting treatment.

Why M30 Addiction Can Escalate Quickly

Tolerance can reduce the subjective effect of the same opioid exposure. People may respond by using more pills, using more often or moving toward a stronger street supply.

Counterfeit M30s can accelerate this problem because high-potency opioid exposure can create substantial tolerance and dependence. The user may still describe the drug as “blues” or “30s” even when the dependence is being driven by a different opioid than expected.

Daily life can become organized around avoiding withdrawal and maintaining supply. Work, sleep, money and relationships can all become secondary to finding the next pill.

The imprint identifies the legitimate pharmaceutical product, while the pattern of use determines whether tolerance, physical dependence or opioid use disorder has developed.

How Counterfeit M30s Change Tolerance

A person using pharmaceutical oxycodone can develop tolerance gradually as repeated opioid exposure continues. Counterfeit pills add variability because one batch can have a different opioid concentration from another.

That changing exposure can make tolerance difficult to judge. Someone may believe the pills have become stronger or weaker while the actual composition has changed.

A period of abstinence can also reduce opioid tolerance. Returning to the same number of street pills after detox, incarceration, hospitalization or another break can create a much greater overdose risk.

Treatment planning should therefore include recent breaks in use, overdose history and whether the person has been using pharmaceutical oxycodone or counterfeit blues.

What Families Often Notice With Daily Blue-Pill Use

Families may first notice long periods of sleep, nodding, constipation, missing money, disappearing for hours, repeated trips to obtain pills or abrupt sickness when the supply runs out.

A person may become unusually anxious or irritable before using and then appear sedated afterward. That cycle can reflect opioid withdrawal followed by temporary relief after another pill.

Naloxone use, emergency department visits or episodes where the person was difficult to wake indicate a much higher level of risk.

These patterns can help a family recognize that “just taking blues” has become opioid dependence or addiction.

M30s, Xanax and Alcohol

Combining opioids with benzodiazepines or alcohol can deepen sedation and respiratory depression. Someone may have tolerance to each substance separately and still experience a dangerous combined effect.

Street-market pills add another uncertainty because a person can believe they are combining oxycodone with Xanax while one or both pills contain different drugs.

Polysubstance use should be part of every M30 addiction assessment, especially after blackouts, naloxone use or unexplained episodes of severe sedation.

Alcohol, benzodiazepines and other opioids can intensify sedation and respiratory depression when used with oxycodone or an opioid sold as an M30.

Treatment for M30, Blues and Counterfeit Pill Addiction

People using M30s may have opioid use disorder whether the supply is pharmaceutical oxycodone, counterfeit opioid pills or a mixture over time.

Evidence-based treatment for opioid use disorder can include buprenorphine, methadone or naltrexone with medical and behavioral support. The specific plan depends on the opioid exposure, withdrawal, overdose history and other substances.

Someone who believes they are addicted to oxycodone may have substantial dependence from counterfeit M30s. The treatment team can address the clinical opioid dependence even when every past pill cannot be chemically identified.

People who need structured care can compare detox centers, residential treatment and dual-diagnosis care.

Frequently Asked Questions About M30 Pills

What is a real M30 pill?

A legitimate Mallinckrodt M30 tablet is light-blue oxycodone hydrochloride 30 mg.

What are M30s called on the street?

Oxycodone street names documented by DEA include 30s, Blues, Oxy and Roxy. M30 and blue 30s are also common search terms around the pill.

Are all blue M30s oxycodone?

No. Counterfeit M30 pills can imitate the legitimate oxycodone tablet while containing another opioid.

How long does M30 stay in urine?

Legitimate oxycodone exposure is often detectable in urine for about one to four days, depending on the test and use pattern.

Can someone become dependent on counterfeit M30s?

Yes. Counterfeit M30s can contain potent opioids and can produce significant opioid tolerance, dependence and withdrawal.

Why are M30s called blues?

The legitimate 30 mg Mallinckrodt tablet is light blue, and DEA documents Blues as an oxycodone street term.

Sources

• DailyMed: Oxycodone Hydrochloride M30
• DEA: Oxycodone Street Names and Fake Prescription Pills
• CDC MMWR: Suspected Counterfeit M30 Exposures and Withdrawals
• PubMed: Oxycodone Urinary Pharmacokinetics
• PubMed: Oxycodone in Oral Fluid and Blood