Is Bentyl a Controlled Substance?
No, Bentyl (dicyclomine) is not a controlled substance in the United States. The FDA-approved drug label does not classify it as a controlled substance, and it is not scheduled under the Controlled Substances Act 1.
Regulatory Classification
Dicyclomine is an anticholinergic/antimuscarinic medication approved by the FDA for treating irritable bowel syndrome. It works through dual mechanisms: blocking acetylcholine receptors and directly relaxing smooth muscle in the gastrointestinal tract 1. Unlike substances discussed in the cannabis regulatory framework that are classified under various DEA schedules 2, dicyclomine has no such scheduling designation.
Important Caveat: Abuse Potential Exists
While not legally controlled, dicyclomine does have documented abuse potential, particularly in certain populations:
- Geographic patterns: Reports from Brazil documented non-medical use of dicyclomine (Bentyl) among first and second grade students and street children, with usage rates exceeding those of cocaine, barbiturates, and amphetamines in some cases 3
- Anticholinergic effects: Users seek the drug for its anticholinergic properties, which can produce psychoactive effects 3, 4
- Dependence cases: A documented case of a young female abusing dicyclomine for 1.5 years resulted in overt anticholinergic toxicity requiring strict abstinence and rehabilitation 4
Clinical Implications
When prescribing dicyclomine:
- No special DEA prescribing requirements are needed
- Monitor for misuse signs: drowsiness, blurred vision, dry mouth, confusion, or requests for early refills
- Be aware that the anticholinergic properties that make it effective for GI spasm can also make it attractive for abuse
- Storage instructions specify controlled room temperature and light-resistant containers, but these are for drug stability, not regulatory control 1
The lack of controlled substance status means dicyclomine can be prescribed without DEA restrictions, but clinicians should remain vigilant about potential misuse, especially in adolescent and young adult populations.