Evidence-Based Drug Information

Know What Every
Substance Does
To Your Body

Plain-language, medically reviewed information on over 100 substances — their effects, overdose risks, and how to find real help. Because knowledge saves lives.

Medically Reviewed
100% Free
No Judgment
Updated Regularly
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107K+ Overdose Deaths
Per Year in the US
Our Mission

Built to Inform.
Designed to Save Lives.

SubstanceManual was created because people deserve honest, plain-language information about drugs — free from shame and free of charge. Whether you're curious, concerned about a loved one, or struggling yourself, you'll find straightforward answers here.

Every substance page is written with one goal: give you exactly what you need to stay safer, recognize danger, and find help before it's too late.

Medically Reviewed

All content is reviewed for accuracy against current clinical research and SAMHSA guidelines.

Zero Judgment

We don't moralize. We give you facts so you can make informed decisions.

Always Free

No paywalls, no sign-ups. Life-saving information should never be locked behind a gate.

Regularly Updated

The drug landscape changes fast. We update substance pages as new risks emerge.

The Reality

Why This Information Matters

107,500+ Drug overdose deaths
in the US per year
Source: CDC
~73% Of overdose deaths
involve opioids
Source: NIDA
48M+ Americans living with
a substance use disorder
Source: SAMHSA
10% Who need treatment
actually receive it
Source: SAMHSA
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