Overview of B & O
Belladonna and Opium (B & O) is a prescription-only combination medicine administered primarily as a rectal suppository. It is fundamentally classified as a Narcotic Analgesic Combination, and is clinically recognized for providing powerful relief from severe pain by combining two distinct therapeutic actions.
This medication uniquely employs a dual-action strategy, blending an opioid agonist (Opium) with an anticholinergic or antispasmodic agent (Belladonna Extract). This pairing is designed to simultaneously address pain signals within the nervous system and manage the physical source of discomfort originating from involuntary muscle contractions, offering a distinctive, comprehensive approach.
Quick Facts
| Property | Description |
|---|---|
| Active Ingredients | Opium and Belladonna Extract |
| Form | Rectal Suppository (e.g., Supprettes) |
| Pharmacological Class | Narcotic Analgesic Combination |
| General Purpose | Relief of pain associated with muscular spasm |
| Origin | Derived from natural plant sources |
What Type of Medicine is Belladonna and Opium (B & O)?
B & O is a combination medicine classified within the Narcotic Analgesic Combination class, exclusively formulated as a rectal suppository.
This classification indicates the product merges the effects of two potent agents: the Opium component provides its analgesic and sedative properties, and the Belladonna Extract component contributes relaxation to smooth muscle. The inclusion of Opium means that the product is regulated as a controlled substance due to its high potential for dependence. This medicine is used for the targeted relief of painful spasms. The single available form is the suppository, which utilizes a water-soluble base for administration via the rectal route. This form is often referenced by the historical designation, such as Supprettes.
Composition: What Active Ingredients Make Up B & O?
The active composition of B & O consists of Opium and Belladonna Extract, which are both standardized extracts derived from natural substances.
The Opium component is sourced from the Papaver somniferum plant and contains several alkaloids, including morphine, responsible for the potent pain-modulating effect. The Belladonna Extract is sourced from the Atropa belladonna plant, contributing alkaloids such as atropine that are key to the muscle-relaxing action. The Belladonna component acts as an anticholinergic to reduce spasm. The unique differentiation of this formulation is the precise inclusion of the powdered extracts within an inert, easily dissolved suppository base, designed for rapid systemic absorption.
Regulatory References

