Cyclobenzaprine and Scopolamine interaction

Cyclobenzaprine and Scopolamine: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.

Major

Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.

What the FDA labels say

From the Cyclobenzaprine (TONMYA) label · effective 2026-08-14

Major

Based on its structural similarity to TCAs, concomitant use of TONMYA with: MAO inhibitors may be life-threatening [see Contraindications (4) ] , Alcohol, barbiturates, and other CNS depressants may increase the risk of adverse reactions associated with these drugs, Tramadol may increase the seizure risk, Guanethidine or other similar acting drugs may block the…

Drug interactionsby drug classView label on DailyMed
Moderate

CNS Depression and Risk of Operating a Motor Vehicle or Hazardous Machinery TONMYA monotherapy may cause CNS depression and concomitant use of TONMYA with alcohol, barbiturates, or other CNS depressants may increase the risk of CNS depression [see Drug Interactions (7) ].

Warnings and precautionsby drug classView label on DailyMed

From the Scopolamine (Transderm Scop) label · effective 2025-06-10

Moderate

• Gastrointestinal and Urinary Disorders : Consider more frequent monitoring during treatment in patients suspected of having intestinal obstruction; patients with pyloric obstruction, patients with impeded urine flow or receiving other anticholinergic drugs.

Warnings and precautionsby drug classView label on DailyMed
Moderate

Concomitant use of other drugs that cause central nervous system (CNS) adverse reactions (e.g., alcohol, sedatives, hypnotics, opiates, and anxiolytics) or have anticholinergic properties (e.g., other belladonna alkaloids, sedating antihistamines, meclizine, tricyclic antidepressants, and muscle relaxants) may increase this effect [see Drug Interactions ( 7.1 )] .

Warnings and precautionsby drug classView label on DailyMed
Moderate

Consider more frequent monitoring during treatment with TRANSDERM SCŌP in patients suspected of having intestinal obstruction, patients with pyloric obstruction or patients with impeded flow of urine (e.g., in diseases of the prostate or urinary bladder neck obstruction) and patients receiving other anticholinergic drugs [see Drug Interactions ( 7.2 )] .

Warnings and precautionsby drug classView label on DailyMed
Moderate

…adverse reactions of drowsiness, dizziness or disorientation (e.g., sedatives, hypnotics, opiates, anxiolytics and alcohol) or have anticholinergic properties (e.g., other belladonna alkaloids, sedating antihistamines, meclizine, tricyclic antidepressants, and muscle relaxants) may potentiate the effects of TRANSDERM SCŌP [see Warnings and Precautions ( 5.2 )] .

Drug interactionsby drug classView label on DailyMed

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Not medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.