NutriStack
Potassium and Sotalol, a synergy.
Sotalol prolongs the QT interval; hypokalemia dramatically increases the risk of torsades de pointes. Maintaining normal serum potassium is essential, and potassium repletion is a cornerstone of preventing and treating sotalol-related arrhythmias.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
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At a glance
- Pair type
- Synergy
- Evidence (highest tier)
- Strong
- Source citations
- 2 sources
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Synergy · Strong evidence
Synergy
What is happening. Sotalol prolongs the QT interval; hypokalemia dramatically increases the risk of torsades de pointes. Maintaining normal serum potassium is essential, and potassium repletion is a cornerstone of preventing and treating sotalol-related arrhythmias.
Mechanism. Sotalol blocks the IKr current; low serum potassium reduces IKr activity further and slows repolarization, creating substrate for early afterdepolarizations and torsades. Maintaining serum potassium ≥4.0 mEq/L is standard practice during sotalol therapy.
Recommendation. Do not take potassium supplements without your prescriber's knowledge, but maintain potassium-rich foods and report any diuretic use or GI losses to your cardiologist. Have potassium levels monitored regularly on sotalol.
Sources (2)
Stack Score
How this pair moves the number.
Effect on the composite score
If both Potassium and Sotalol are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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