Drug reference
tetrahydrozoline
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Drug class
Respiratory (Decongestant)
Mechanism of action
May stimulate alpha-adrenergic receptors in the arterioles of the conjunctiva; produces vasoconstriction. May produce mydriasis when applied to the conjunctiva, but this effect is usually minimal with the concentrations used as ocular decongestants.
Common side effects
- Irritation/burning
- Headache
- Blurred vision
Related conditions
Frequently asked questions
What drug class is tetrahydrozoline?
tetrahydrozoline belongs to: Respiratory.
How does tetrahydrozoline work?
May stimulate alpha-adrenergic receptors in the arterioles of the conjunctiva; produces vasoconstriction. May produce mydriasis when applied to the conjunctiva, but this effect is usually minimal with the concentrations used as ocular decongestants.
What are the common side effects of tetrahydrozoline?
Irritation/burning, Headache, Blurred vision
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