What Is Spice/K2? Risks, Effects & Addiction Treatment

Spice, or K2, are some of the most common names used to describe synthetic drugs that are designed to mimic THC, but they are not hemp or marijuana products.1,2 Also referred to as a synthetic cannabinoid, Spice/K2 is made in a lab where dried and shredded plant-like materials are sprayed with chemicals and prepared for smoking or vaping. The chemicals are supposed to resemble the chemicals found in marijuana; however, they do not produce the same effects.2 They are not legal for human consumption due to their dangerous effects on the mind and body.1

Despite not being legal, retailers often sell them as potpourri or herbal incense and label them “not for human consumption” to avoid legal repercussions. Spice/K2 chemicals are sold in liquid form, so people can add them to vaping cartridges, or in solid form that can be smoked in the same way that marijuana is typically smoked.2

According to the U.S. Drug Enforcement Administration (DEA), Spice/K2 has no medicinal uses and has a potential for addiction, so it is classified as a Schedule I drug.²

Spice/K2 attaches to many of the same receptors in the brain that marijuana and other drugs attach to and cause a release of chemicals.3 Scientists originally created spice/K2 to study how cannabinoids affect the brain. Many of these compounds were described in patents and scientific literature, which made the recipes publicly accessible, allowing illicit manufacturers to attempt to recreate the product in clandestine labs. As the government bans specific cannabinoids, illicit manufacturers quickly create new ones to skirt the laws.4

Because of the constant changes in chemicals, different batches of Spice/K2 may have varying potency and effects.1,4 One batch of K2 may not feel like very much to you while the next may cause a variety of unwanted effects.1,2 With no consistency between products or batches, users are at an increased risk of dangerous side-effects and overdose.1,2 Using Spice/K2 has also been linked to renal, hepatic, neurological, and cardiovascular damage.1 Because of the various dangers of K2, many states have banned certain synthetic cannabinoids.2 

Consuming Spice/K2 over long periods of time can also lead to addiction. When you try to stop taking it, you may experience severe withdrawal symptoms that can be uncomfortable and lead to relapse without the right support.2 

Effects of Spice/K2

The effects of Spice/K2 will vary for each individual due to factors such as the amount consumed, duration of use, and the specific chemicals present in the product. Effects do not typically imitate the effects of marijuana. There can be both physical and psychological effects of spice drug, including: 3

• Severe agitation
• Disorganized thoughts
• Paranoid delusions
• Hallucinations
• Anxiety
• Violence
• Psychotic episodes
• Elevated heart rate
• Elevated blood pressure
• Tremors
• Seizures
• Vomiting
• Numbness and tingling
• Loss of consciousness

Long-term effects may include kidney problems and seizures.3 

Can You Overdose on Spice/K2?

Yes, using Spice/K2 can lead to toxic effects, and you can overdose on it. An overdose occurs when the body cannot process the drug, and your organs begin to fail. Spice/K2 drug overdose symptoms may include the following: 5

• Severe delirium
• Seizures
• Hypothermia
• Hypoglycemia
• Severe vomiting
• Disorientation
• Extreme agitation or violence
• Psychosis
• Impaired motor control
• Loss of consciousness
• Heart palpitations or arrhythmias
• Respiratory changes or failure

If you are with someone who overdoses on Spice/K2, it is crucial to call 911 for help immediately. Please do not leave them until emergency medical and rescue teams arrive. Stay on the phone with the 911 operator, who can help you administer CPR if needed.6

When someone is using Spice/K2, noticeable changes can be observed in their physical appearance, psychological health, and living environment. Additionally, they may be unable to function and fulfill their responsibilities at home, work, school, or socially. Signs and symptoms to watch for include spending time with a different crowd, changes in their appearance, and a decline in productivity or academic performance.7

Someone with a substance use disorder involving Spice/K2 may also change their sleeping habits, become argumentative or violent, engage in risk-taking activities, become secretive, have extreme mood swings, and have an unusual smell or odor. Their life may seem to revolve around the drug they are using.7

Yes, synthetic cannabinoids like Spice/K2 can be addictive. Studies show these drugs have a high addiction potential, and repeated use can cause the brain to adapt in ways that make stopping very difficult.⁵ As someone uses Spice/K2 regularly, they may begin to develop tolerance, meaning they need larger amounts to feel the same effects. Over time, their body may also develop dependence, where they start to feel unwell or distressed when the drug is not in their system.3,8

It’s important to note that dependence and addiction are not the same thing, although dependence can be an early step in that direction. Dependence simply means the brain and body have adjusted to regular drug use. Addiction, on the other hand, occurs when someone loses control over their use and continues taking the drug even when it harms their health, relationships, or daily responsibilities.⁸

With Spice/K2, addiction may look like intense cravings, repeated unsuccessful attempts to quit, or spending large amounts of time using or recovering from the drug. Someone may also continue using it even though it causes serious physical or psychological problems.3,8

When a person who is dependent or addicted tries to stop using Spice/K2, they may experience uncomfortable withdrawal symptoms.³ These symptoms, along with strong cravings, can make quitting very challenging without support.

Withdrawal symptoms may appear when someone dependent or addicted to Spice suddenly stops taking it. Withdrawal symptoms can range from mild to severe and may include one or more of the following: 9

• Cognitive impairment
• Cravings
• Nausea
• Headaches
• Tremors
• Sleep disturbances
• Nightmares
• Flu-like symptoms
• Anxiety or depression
• Muscle cramps
• Hallucinations
• Seizures

Spice/K2 Addiction Treatment Methods

Fortunately, there are many options when it comes to treatment for spice addiction. Depending on the severity of their withdrawal symptoms, you can begin with medical detox and then transition into inpatient rehab, a partial hospitalization program (PHP), intensive outpatient program(IOP), or a standard outpatient program.8

Therapy options for treating substance use disorders often include behavioral interventions, such as cognitive-behavioral therapy (CBT), dialectical behavior therapy, motivational interviewing (MI), support groups, and more. Some digital CBT programs have been shown to be effective in treating addiction. Behavioral therapies like CBT and DBT can teach you how to recognize and avoid triggers, manage impulses, enhance social skills, and establish support systems. 8

If you have a mental health disorder along with a Spice/K2 use disorder, you can also receive dual diagnosis treatment. Treating both mental health and substance use disorders simultaneously can improve recovery outcomes.10

If you’re struggling with addiction to Spice/K2 or other synthetic cannabinoids, Empowered Recovery Center in Atlanta can help. Our experienced recovery team will work closely with you to develop a personalized treatment plan to meet your unique needs through our various rehab programs.

The first step to living without drugs or alcohol is to contact our rehab admissions team. One of our admissions coordinators can answer common questions about our various rehab programs in Atlanta and the cost of addiction treatment. They can also explain how you can receive comprehensive treatment with or without insurance. 

Call us today to learn more or verify your insurance to get started on your journey to living free from addiction.

References

1. Alzu’bi, A., Almahasneh, F., Khasawneh, R., Abu-El-Rub, E., Baker, W. B., & Al-Zoubi, R. M. (2024). The synthetic cannabinoids menace: a review of health risks and toxicity. European journal of medical research, 29(1), 49. https://doi.org/10.1186/s40001-023-01443-6. Retrieved on September 19, 2025, from https://pmc.ncbi.nlm.nih.gov/articles/PMC10785485/.
2. U.S. Drug Enforcement Administration. (2024). Drug fact sheet: K2/spice. Retrieved on September 17, 2025, from https://www.dea.gov/sites/default/files/2025-01/K2-Spice-Drug-Fact-Sheet.pdf.
3. National Institute on Drug Abuse. (2019). Mind matters: The body’s response to K2/spice and bath salts. Retrieved on September 17, 2025, from https://nida.nih.gov/research-topics/parents-educators/mind-matter-series/k2-bath-salts.
4. National Institute on Drug Abuse. (2023). Can science keep up with designer drugs? Retrieved on September 22, 2025, from https://nida.nih.gov/news-events/nida-asks/can-science-keep-up-with-designer-drugs.
5. de Oliveira, M. C., Vides, M. C., Lassi, D. L. S., Torales, J., Ventriglio, A., Bombana, H. S., Leyton, V., Périco, C. A., Negrão, A. B., Malbergier, A., & Castaldelli-Maia, J. M. (2023). Toxicity of Synthetic Cannabinoids in K2/Spice: A Systematic Review. Brain sciences, 13(7), 990. https://doi.org/10.3390/brainsci13070990. Retrieved on September 17, 2025, from https://pmc.ncbi.nlm.nih.gov/articles/PMC10377539/#sec3-brainsci-13-00990.
6. National Institute on Drug Abuse. (2024). Understanding an overdose and how to respond to one. Retrieved on September 19, 2025, from https://nida.nih.gov/research-topics/parents-educators/lesson-plans/understanding-an-overdose-and-how-to-respond-to-one.
7. Indian Health Service. (n.d.). Warning signs of substance and alcohol use disorder. Retrieved on September 17, 2025, from https://www.ihs.gov/asab/familyfriends/warningsignsdrug/.
8. Volkow, N. D., & Blanco, C. (2023). Substance use disorders: a comprehensive update of classification, epidemiology, neurobiology, clinical aspects, treatment, and prevention. World psychiatry: official journal of the World Psychiatric Association (WPA), 22(2), 203–229. https://doi.org/10.1002/wps.21073. Retrieved on September 17, 2025, from https://pmc.ncbi.nlm.nih.gov/articles/PMC10168177/.
9. Sharma, R. & Weinstein, A. (2025). Synthetic Cannabinoid Withdrawal: A Systematic Review of Case Reports. European addiction research, 274-285. https://doi.org/10.1159/000546633. Retrieved on September 17, 2025, from https://karger.com/ear/article/doi/10.1159/000546633/929492/Synthetic-Cannabinoid-Withdrawal-A-Systematic.
10. MedLine. (2023). Dual diagnosis. Retrieved on September 19, 2025, fromhttps://medlineplus.gov/dualdiagnosis.html.