Glossary

What Is Tolerance?

Tolerance develops when a substance produces a weaker effect over time, leading people to take more to achieve the same result. It's an early step on the path toward dependence.

Medically reviewed · Evidence-basedBy Benjamin Zohar, NCACIP · Reviewed by Brandon McNally, RNPublished · Updated · Last reviewed

Definition

Tolerance means the same dose no longer produces the same effect. The brain adapts to repeated exposure, so people often increase their dose to compensate.

How tolerance develops

With opioid-like substances, receptors become less responsive over time. This is why someone may start with a small amount of 7-OH or kratom and gradually need much more.

Why tolerance is dangerous

Escalating doses to overcome tolerance raises the risk of dependence and overdose — especially with concentrated 7-OH products of inconsistent potency. Rising tolerance is often an early warning sign.

Frequently Asked Questions

Author

Benjamin Zohar, NCACIP

Nationally Certified Advanced Clinical Intervention Professional (NCACIP) · NAADAC Member · ISSUP Network Moderator

Benjamin Zohar is an addiction recovery professional, NAADAC member, and founder of Intervention New York (Intervention NY). A Nationally Certified Advanced Clinical Intervention Professional (NCACIP), he operates a statewide network of treatment navigation, placement, and crisis intervention services across New York, including the Hudson Valley Addiction Treatment Center, Long Island Addiction Treatment Resources, and Every1 Center. He specializes in clinical placement, structured family and executive interventions, and benefits navigation. As an ISSUP Network Moderator, he leads the Integrated Recovery & Intervention Education Network (IRIEN) and authors practical guides and peer-reviewed articles on emerging substance use threats. He also maintains active advocacy membership with the National Alliance on Mental Illness (NAMI).

Medically Reviewed By

Brandon McNally, RN

Registered Nurse (RN) · Medical Reviewer

Registered nurse who reviews clinical content for medical accuracy, ensuring information on 7-OH and kratom dependence, withdrawal, and treatment reflects current evidence-based standards.

References

  1. NIDA — The Science of Drug Use and Addiction
  2. PubMed — drug tolerance definition mechanism
  3. MedlinePlus — Kratom
  4. SAMHSA — Medications for Substance Use Disorders

Medical disclaimer: This article is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions about a medical condition or substance use. If you are experiencing a medical emergency, call 911.

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