ARS (Anticholinergic Risk Scale)
Anticholinergic Risk Scale: count of the patient's 1-, 2-, and 3-point ARS drugs, weighted and summed.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Point1 Count
- 0
- Point2 Count
- 1
- Point3 Count
- 1
Result: ARS 5 — higher anticholinergic risk.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- total
- A higher total is associated with greater anticholinergic adverse-effect risk; the scale defines no official cut.
What you enter
- Point1 Count
- Point2 Count
- Point3 Count
How this is calculated
Rudolph JL, Salow MJ, Angelini MC, McGlinchey RE. The Anticholinergic Risk Scale and anticholinergic adverse effects in older persons. Arch Intern Med. 2008;168(5):508-513. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.