Supplement × Prescription·a caution·Moderate evidence

Potassium + Tolterodine

Caution Moderate evidence

Antimuscarinic slowing of gastrointestinal transit may increase mucosal injury risk from solid potassium products.

From the database

What the row says.

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Substances
Pair type
Caution
Evidence
Moderate
Source citations
1
Scope
Supplement × Prescription
Last verified
June 4, 2026
CautionModerate evidence

What is happening. Antimuscarinic slowing of gastrointestinal transit may increase mucosal injury risk from solid potassium products.

Mechanism. Reduced motility can prolong mucosal exposure to potassium salts.

Recommendation. Use potassium only under clinician direction; report abdominal pain, vomiting, bleeding, or severe constipation.

Stack Score

How it moves the number.

Effect on the composite score

If both Potassium and Tolterodine are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).

The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

1
  • 1U.S. National Library of Medicine. Tolterodine Tartrate Extended-Release Capsules US Prescribing Information. 2026.Needs sourceNo link

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