7-OH, short for 7-hydroxymitragynine, is one of the active compounds found in kratom. In recent years, highly concentrated 7-OH products have appeared in smoke shops and online stores, often marketed as stronger or “cleaner” alternatives to traditional kratom leaf.

Because 7-OH is significantly more potent than natural kratom powder, understanding how long it lasts and how it affects the body is important, especially for people concerned about dependence or withdrawal. At Sanctuary Treatment Center, we’ve seen increasing questions around 7-OH concentrates and their risks.

What Is 7-OH?

7-Hydroxymitragynine is an alkaloid naturally present in kratom leaves, but only in very small amounts. It acts primarily on mu-opioid receptors, the same receptors affected by opioids like morphine and oxycodone.

In traditional kratom leaf, 7-OH is present in trace levels. However, some newer products isolate or concentrate this compound, making it much stronger per dose.

Table 1. 7-OH (7-Hydroxymitragynine) at a Glance

Category	Details
Full name	7-Hydroxymitragynine
Found in	Kratom (Mitragyna speciosa) leaves in small amounts
Common product form	Concentrated tablets, capsules, extracts, liquid shots
Typical onset time	15–45 minutes (oral)
Peak effects	1–2 hours after ingestion
Duration of noticeable effects	3–6 hours
Detection window	~1–3 days (varies by use pattern)
Primary action	Mu-opioid receptor agonist
Subjective effects	Euphoria, pain relief, relaxation, sedation
Higher dose effects	Strong sedation, nausea, dizziness, slowed breathing
Tolerance development	Faster with concentrates than raw leaf
Dependence risk	Moderate to high with daily use
Withdrawal onset	12–24 hours after last dose
Withdrawal symptoms	Anxiety, insomnia, sweating, muscle aches, irritability
Overdose risk	Increased when combined with alcohol, benzodiazepines, opioids
Regulatory status	Not FDA-approved as a medication in the U.S.
Biggest risk factor	Concentrated forms with unclear dosing

How Long Does 7-OH Last?

Typical Duration

For most users, the noticeable effects of 7-OH last:

3 to 6 hours

However, this can vary depending on:

• Dose
• Individual metabolism
• Tolerance level
• Whether taken on an empty stomach
• Whether combined with other substances

Concentrated products may feel stronger but shorter in duration compared to traditional kratom leaf.

Onset Time

7-OH generally begins working within:

15 to 45 minutes when taken orally.

Because it is more potent than standard kratom powder, the onset can feel faster and more intense.

Peak Effects

Peak effects typically occur around:

1 to 2 hours after ingestion

During this window, users may experience:

• Euphoria
• Pain relief
• Sedation
• Reduced anxiety
• Warm, opioid-like body sensation

Higher doses increase sedation and respiratory suppression risk.

After Effects

After the primary effects wear off, users may notice:

• Fatigue
• Irritability
• Anxiety
• Cravings for redosing

This “crash” period can encourage frequent use.

How 7-OH Compares to Regular Kratom

Feature	Traditional Kratom Leaf	Concentrated 7-OH Products
Potency	Moderate	High
Duration	4–6 hours	3–6 hours (often more intense)
Opioid receptor activity	Mild to moderate	Strong
Tolerance development	Gradual	Faster
Dependence risk	Present	Higher

Because 7-OH directly stimulates opioid receptors more strongly, dependence can develop more quickly than with raw kratom leaf.

How Long Does 7-OH Stay in Your System?

While noticeable effects last a few hours, metabolites may remain detectable for:

1 to 3 days, depending on dose and frequency.

Detection windows vary widely and are not standardized like traditional opioids.

Can You Experience Withdrawal From 7-OH?

Yes. Withdrawal symptoms can resemble mild to moderate opioid withdrawal. Symptoms may include:

• Restlessness
• Muscle aches
• Sweating
• Anxiety
• Insomnia
• Irritability
• Runny nose
• Cravings

Withdrawal typically begins within:

12 to 24 hours after the last dose

Severity depends heavily on daily dosage and length of use.

Why Concentrated 7-OH Is Riskier

Traditional kratom contains a mixture of alkaloids that modulate each other. Concentrated 7-OH isolates the strongest opioid-active compound.

That means:

• Stronger opioid receptor stimulation
• Faster tolerance development
• Higher withdrawal intensity
• Increased overdose risk when combined with alcohol or sedatives

Because these products are often sold in smoke shops without clear dosing standards, miscalculation is common.

Mixing 7-OH With Other Substances

Combining 7-OH with:

• Alcohol
• Benzodiazepines
• Opioids
• Phenibut
• Other sedatives

increases risk of:

• Respiratory depression
• Severe sedation
• Loss of consciousness
• Accidental overdose

Many people mistakenly assume kratom-derived products are “natural” and therefore safe to mix. That assumption is dangerous.

When 7-OH Use Becomes a Problem

Warning signs include:

• Daily use
• Increasing doses
• Needing it to feel normal
• Anxiety between doses
• Using it to avoid withdrawal
• Financial strain from purchasing concentrates

If use has shifted from occasional to necessary, dependence may already be present.

How Sanctuary Treatment Center Helps

If 7-OH use has become difficult to manage, professional support can help stabilize safely.

Sanctuary provides:

• Medical detox evaluation
• Withdrawal management
• Medication-assisted treatment when appropriate
• Therapy for anxiety and pain-related drivers
• Relapse prevention planning

We treat kratom and 7-OH dependence with the same clinical seriousness as other opioid-related issues.

Frequently Asked Questions About 7-OH Duration

Sources

1. National Institute on Drug Abuse. (2022, March 25). Kratom. https://nida.nih.gov/research-topics/kratom
2. U.S. Food and Drug Administration. (2025, December 2). FDA and kratom. https://www.fda.gov/news-events/public-health-focus/fda-and-kratom
3. U.S. Food and Drug Administration. (2025, July 29). Products containing 7-OH can cause serious harm. https://www.fda.gov/consumers/consumer-updates/products-containing-7-oh-can-cause-serious-harm
4. U.S. Food and Drug Administration. (2025, July 29). FDA takes steps to restrict 7-OH opioid products threatening American consumers (Press release). https://www.fda.gov/news-events/press-announcements/fda-takes-steps-restrict-7-oh-opioid-products-threatening-american-consumers
5. Anwar, M., Law, R., & Schier, J. (2016). Notes from the field: Kratom (Mitragyna speciosa) exposures reported to poison centers—United States, 2010–2015. Morbidity and Mortality Weekly Report, 65(29), 748–749. https://www.cdc.gov/mmwr/volumes/65/wr/mm6529a4.htm
6. Olsen, E. O. M., O’Donnell, J., Mattson, C. L., et al. (2019). Notes from the field: Unintentional drug overdose deaths with kratom detected—27 states, July 2016–December 2017. Morbidity and Mortality Weekly Report, 68(14), 326–327. https://www.cdc.gov/mmwr/volumes/68/wr/mm6814a2.htm
7. Kruegel, A. C., et al. (2019). 7-Hydroxymitragynine is an active metabolite of mitragynine and mediates its analgesic effects via the mu-opioid receptor. ACS Central Science, 5(6), 992–1001. https://pmc.ncbi.nlm.nih.gov/articles/PMC6598159/
8. Obeng, S., et al. (2021). In vitro affinity and efficacy for μ-opioid receptor and other targets of mitragynine and 7-hydroxymitragynine. Frontiers in Pharmacology, 12, 639303. https://pmc.ncbi.nlm.nih.gov/articles/PMC7923387/
9. U.S. Drug Enforcement Administration. (2020). Drug fact sheet: Kratom. https://www.dea.gov/sites/default/files/2020-06/Kratom-2020_0.pdf
10. Office of the Surgeon General and OPSS. (2025, October 7). Kratom and 7-OH: Significant risks to health. https://www.opss.org/article/kratom-and-7-oh-significant-risks-health

Public health officials have recently begun to sound the alarm about a new street drug that may be responsible for overdose surges in a few large U.S. cities. Manufacturers typically add medetomidine to fentanyl and other illicit recreational substances. As a result, many people who are harmed by it may not even realize they’ve taken it.

What is Medetomidine?

Medetomidine is a veterinary sedative and anesthetic. In the U.S., it has earned approval from the Food and Drug Administration (FDA) to sedate dogs for certain procedures. 

The FDA has also approved a version of medetomidine called dexmedetomidine. This is authorized to be used on human patients who need to be sedated while on a mechanical ventilator or prior to surgery. 

When administered by qualified professionals for legitimate medical purposes, medetomidine can be both safe and beneficial. Unfortunately, as we will discuss in greater detail later in this post, illicit drug manufacturers have begun to add medetomidine to some recreational substances, particularly opioids.  

Medetomidine, a synthetic alpha-2 agonist, resembles xylazine, which has recently contributed to a rise in overdose deaths. However, public health officials have emphasized that medetomidine is more potent than xylazine. This increases the risk faced by individuals who intentionally or unintentionally abuse it for recreational purposes.

Illicit Drugs Laced with Medetomidine

Fentanyl and heroin are the two illicit drugs most likely to be contaminated with medetomidine. Some sources have also detected medetomidine in samples of cocaine. However, this doesn’t seem to be nearly as common as opioid and medetomidine combos.

When abused on their own, fentanyl, heroin, and cocaine can all put people at risk for serious negative outcomes, including overdose and death. Combining them with medetomidine significantly increases their danger. This danger may be magnified by the fact that most people don’t realize that the drug they’re taking contains this undisclosed ingredient. 

In a June 3, 2024, CBS News segment, an employee of the Philadelphia Department of Health said that the department detected medetomidine in samples of street drugs that also contained fentanyl and xylazine. 

The combination of fentanyl and xylazine is often referred to as “tranq.” According to one source in the CBS News segment, some people are referring to the fentanyl-xylazine-medetomidine combination as “rhino tranq.” However, another experts have said that they had not heard that term.

Regardless of their names, the recent surge in illicit street drugs mixed with medetomidine suggests that the nation may face another devastating increase in overdose deaths.

Dangers of Medetomidine

A June 2, 2024, feature on National Public Radio (NPR) reported that medetomidine was involved in “mass overdose outbreaks” in Chicago and Philadelphia during the previous two months. In Philadelphia, according to the NPR feature, medetomidine-related overdoses caused 160 hospitalizations over a four-day period.

In addition to the risk of overdose, someone who takes medetomidine in a non-medical setting may also be in danger for a variety of other problematic outcomes, including:

• Slowed heart rate and breathing
• Low body temperature
• Dangerously low blood pressure
• Elevated blood glucose level
• Excessive urination
• Vomiting and diarrhea
• Twitching
• Easing of anxiety
• Hallucinations
• Delusions
• Paranoia

How to Help Somone Who Is Overdosing

Common signs of medetomidine overdose include:

• Constricted (pinpoint) pupils
• Extremely slow or shallow breathing
• Faint pulse
• Disorientation
• Difficulty remaining awake
• Loss of consciousness
• Cool, clammy skin
• Blue or purple color near lips or fingertips

Anyone who exhibits these signs after using medetomidine or another drug needs immediate medical help. If you are with someone who is in the midst of a medetomidine overdose, take the following steps:

1. Call 911 or otherwise summon the closest emergency responder in your area.
2. If you have naltrexone (Narcan), administer it to the person who has overdosed.
3. If the individual is awake, help them into a seated position in a comfortable chair.
4. If the individual is unconscious and cannot be awakened, place them on their side. Do not put them on their back (to reduce the risk of choking if they begin to vomit).
5. Cover the person with a blanket to keep them warm.
6. Remain with the person until the emergency responders arrive.
7. Be prepared to tell the emergency responders as much as you know about what substances the person took, how much they took, and what overdose signs they exhibited.

Also, here are a few important notes about naltrexone (Narcan): 

• Though Narcan can reverse an opioid overdose if administered in time, it cannot reverse a xylazine or medetomidine overdose.
• Since people who ingest medetomidine have usually taken it in combination with an opioid, most trusted sources advise giving Narcan to someone who has overdosed. 
• However, even though the person may appear to be revived and out of danger after receiving Narcan, any medetomidine in their system may still be harmful to them. 
• This is why you should always call 911 first, even if you have Narcan with you. A person who has overdosed on an opioid combined with medetomidine needs a thorough assessment by a qualified healthcare provider, even if they seem OK after receiving Narcan.

Get Help for Drug Addiction at Sanctuary Treatment Center 

Sanctuary Treatment Center offers a full continuum of care to help adults who have become dependent on opioids or any other addictive substances. We also serve patients whose struggles with addiction are accompanied by anxiety, depression, PTSD, and certain other co-occurring mental health concerns.

Programming options at our addiction treatment center in Los Angeles, California, include detoxification (detox), inpatient rehab, and outpatient care. Our team of experienced professionals will work closely with you to assess your needs, determine which level or levels of care are right for you, and select the therapies and support services that will best prepare you to achieve successful, long-term recovery.

When you’re ready to end your compulsive substance abuse for good, the Sanctuary Treatment Center team is here for you. To learn more or to schedule a free assessment, please visit our Contact page or call us today. 

The onset and intensity of cocaine’s effects can depend on how a person ingests the drug and what route it takes to enter the bloodstream. Once a person has cocaine in the blood, these effects are typically brief – but someone may test positive on a blood test long after the drug’s effects have subsided.

How Does Cocaine Enter the Bloodstream?

Cocaine can enter the bloodstream in multiple ways: 

• The most direct manner is to inject the drug directly into a vein. 
• Smoking cocaine (or crack) is the second quickest way to get cocaine in the blood, as the lungs have a large surface area through which the drug can pass into the bloodstream.
• If someone snorts cocaine, the drug will pass from specialized cells in the nasal membrane to capillaries that will distribute it throughout the bloodstream.
• Oral ingestion is the slowest way to get cocaine in the blood. When someone swallows cocaine, the drug must pass through the stomach and liver before being sent to the central nervous system via the bloodstream.

How Long Does Cocaine Stay in Your Blood? 

There’s no precise answer to the question of how long cocaine will remain in your bloodstream. 

Typically, cocaine can stay in your blood anywhere between seven hours and two days. However, the exact length of time that you may continue to have cocaine in the blood can vary depending on several factors, including your metabolism and how much cocaine you have been using.

The half-life of cocaine is about 90 minutes. Half-life refers to the amount of time it takes for half of a substance to be eliminated from the body. It usually takes four to five half-lives for a substance to fall below the detectable limit. For cocaine, this means that it could take about seven and a half hours for the drug to be eliminated.

However, during the process of breaking down cocaine in order to eliminate it, your body converts the drug into compounds called metabolites. The half-life of cocaine metabolites can be as long as 7.5 hours. This means they may still be detectable in your bloodstream for about two days.

Does Cocaine Cause High Blood Pressure?

Hypertension (high blood pressure) is one of the many dangers of cocaine abuse. As described in an April 2014 study in the open access peer-reviewed journal PLOS One, cocaine’s impact on the heart can cause a variety of problems, including “accelerated hypertension, acute myocardial ischaemia and infarction, aortic dissection, and life-threatening arrhythmias.”

The researchers who conducted the 2014 study did not limit participation to individuals who were receiving treatment for cocaine addiction. Thus, their findings suggest that even people who consider themselves to be “casual” or occasional recreational users of cocaine are also at risk of high blood pressure and other heart-related concerns.

What Other Dangers Does Using Cocaine Pose?

The harmful effects of having cocaine in the blood extend far beyond heart-related matters. People who abuse this substance expose themselves to a wide range of negative outcomes, including physical, psychological, and social impairments.

Depending on the amount and frequency of a person’s cocaine use, as well as the ways they ingest the drug, potential dangers include:

• Damage to the nasal septum
• Breathing problems
• Bleeding in the brain
• Malnutrition
• Elevated risk of HIV/AIDS and hepatitis C
• Sexual dysfunction
• Anxiety, paranoia, and other mental health concerns
• Job loss and long-term unemployment
• Financial devastation
• Ruined relationships 
• Being arrested and incarcerated
• Addiction, overdose, and death

The severity of these effects underscores the importance of getting appropriate professional help if you have become addicted to cocaine. With proper care, you can end your abuse of this dangerous drug and build a healthier life in recovery.

Do Cocaine Blood Tests Always Work?

The reliability of cocaine blood tests depends on the quality of the collection procedure and the accuracy of the system that conducts the screening. In most cases, tests for cocaine in the blood are highly effective. When a person has ingested cocaine within the previous 48 hours, there’s a good chance that they will test positive on a blood screening.

If You Have An Addiction To Cocaine 

If you’ve developed an addiction to cocaine, you might feel like there’s no escape, or that no one could possibly understand what you’re going through.

These thoughts are normal and common. They’re also wrong. 

Don’t believe the lies that your addiction is telling you. Don’t allow this disease to undermine your faith in yourself, skew your judgement, and isolate you from the people who care most about you. 

Here’s the truth: Your path toward a healthier and more hopeful future may be much closer than you realize. With one phone call, you can find the proper cocaine treatment that may literally save your life.

Here are just a few of the many reasons why you should make that call today:

• Cocaine addiction is a chronic, progressive disease. This means that, in the absence of appropriate care, your problem is likely to only get worse. 
• The distress of cocaine withdrawal can keep you trapped in the chains of active addiction. When you get professional care, you can begin your treatment in a detox program. This is where a team of experts can provide both medical and therapeutic support to help keep you safe and as comfortable as possible while you complete withdrawal.
• Therapy can help you identify and address any co-occurring mental health concerns or underlying issues that may have contributed to your struggles with cocaine. This can be vital for the success of your recovery efforts.
• During treatment, you can develop skills and strategies for responding to triggers, managing stress, resolving conflicts, and dealing with other common challenges without resorting to substance abuse.
• Treatment can introduce you to the power of sharing support with other members of the recovery community. Developing a strong personal support network can be essential for successful recovery.

Contact Our Cocaine Detox and Rehabilitation Center in California

If you or someone that you care about have become addicted to cocaine, Sanctuary Treatment Center is here to help. Our cocaine detox and rehabilitation center in southern California is a safe and welcoming place where you can receive personalized services from a team of highly skilled and compassionate professionals.

Our continuum of care includes detoxification, residential rehab, outpatient programming, and aftercare planning. We can meet you wherever you are in your recovery journey, then develop the customized plan to get you where you want to be.

Don’t let cocaine addiction rob you of one more day. To learn more about our services, or to schedule a free assessment, please visit our Contact Us page or call us today!