Phenobarbital can cause a slow heart rate, known as bradycardia.

the verdict

SUPPORTED

the evidence backs this

Recorded sources

1 source for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that phenobarbital can cause a slow heart rate, known as bradycardia?

Yes. A reference encyclopedia entry on phenobarbital lists bradycardia among the effects of phenobarbital overdose, directly supporting that the drug can cause a slow heart rate.

Verdict: SUPPORTED · 1 source for, 0 against · Last checked 2 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 1

Phenobarbital

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Phenobarbital. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Phenobarbital

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