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the claim
Opioids can cause drowsiness, so patients should not drive or use machinery when first starting the medicine.
the verdict
SUPPORTED
the evidence backs this
Recorded sources
2 sources for · 0 against
Is it true that opioids can cause drowsiness, so patients should not drive or use machinery when first starting the medicine?
Yes. Opioid medications frequently induce somnolence and psychomotor slowing, supporting the recommendation that patients avoid driving or operating machinery when initiating treatment.
Verdict: SUPPORTED · 2 sources for, 0 against · Last checked
Evidence for · 2
Identifies somnolence as a common adverse effect of prescription opioids.
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A, Z. & A, L. (2024). Safe Management of Adverse Effects Associated with Prescription Opioids in the Palliative Care Population: A Narrative Review.. doi.org. https://doi.org/10.3390/jcm13102746
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More for · 1
Confirms that certain opioids commonly cause somnolence and impair driving performance, highlighting the need for caution.
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K, Ż., K, B., W, P., M, S., I, R., I, I., M, W., K, W., W, P., D, Ś., M, R., & A, C. (2025). Review of Selected 2-Phenylethylamine Derivatives and Opioids, Systematic Review of Their Effects on Psychomotor Abilities and Driving Performance: Psychopharmacology in the Context of Road Safety.. doi.org. https://doi.org/10.3390/ph18101555
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