|
| U.S. Brand
Names |
|
| OptiPranolol®
Ophthalmic |

|
|
| Generic
Available |
|
|
No |

|
|
| Synonyms |
|
|
Metipranolol Hydrochloride |

|
|
| Pharmacological Index |
|
|
Beta Blocker, Nonselective; Ophthalmic Agent, Antiglaucoma |

|
|
| Use |
|
|
Agent for lowering intraocular pressure in patients with chronic open-angle
glaucoma |

|
|
| Pregnancy Risk
Factor |
|
|
C |

|
|
| Contraindications |
|
|
Bronchial asthma, sinus bradycardia, second and third degree A-V block,
cardiac failure, cardiogenic shock, hypersensitivity to betaxolol or any
component, pregnancy |

|
|
| Warnings/Precautions |
|
|
Use with caution in patients with cardiac failure or diabetes mellitus,
asthma, bradycardia, or A-V block |

|
|
| Adverse
Reactions |
|
|
>10%: Ocular: Mild ocular stinging and discomfort, eye irritation
1% to 10%: Ocular: Blurred vision, browache
<1%: Bradycardia, A-V block, congestive heart failure, erythema, weakness,
conjunctivitis, blepharitis, tearing, itching eyes, keratitis, photophobia,
decreased corneal sensitivity, bronchospasm |

|
|
| Overdosage/Toxicology |
|
|
Symptoms of overdose include bradycardia, hypotension, A-V block
Sympathomimetics (eg, epinephrine or dopamine), glucagon or a pacemaker can
be used to treat the toxic bradycardia, asystole, and/or hypotension; initially,
fluids may be the best treatment for toxic hypotension |

|
|
| Drug
Interactions |
|
|
No data reported |

|
|
| Mechanism of
Action |
|
|
Beta-adrenoceptor-blocking agent; lacks intrinsic sympathomimetic activity
and membrane-stabilizing effects and possesses only slight local anesthetic
activity; mechanism of action of metipranolol in reducing intraocular pressure
appears to be via reduced production of aqueous humor. This effect may be
related to a reduction in blood flow to the iris root-ciliary body. It remains
unclear if the reduction in intraocular pressure observed with beta-blockers is
actually secondary to beta-adrenoceptor blockade. |

|
|
| Pharmacodynamics/Kinetics |
|
|
Onset of action: less than or equal to 30 minutes
Maximum effects: ~2 hours
Duration of action: Intraocular pressure reduction has persisted for 24 hours
following ocular instillation
Metabolism: Rapid and complete to deacetyl metipranolol, an active metabolite
Half-life, elimination: ~3 hours |

|
|
| Usual Dosage |
|
|
Ophthalmic: Adults: Instill 1 drop in the affected eye(s) twice
daily |

|
|
| Mental Health: Effects
on Mental Status |
|
|
None reported |

|
|
| Mental Health:
Effects on Psychiatric
Treatment |
|
|
None reported |

|
|
| Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
|
|
No information available to require special precautions |

|
|
| Dental Health:
Effects on Dental Treatment |
|
|
No effects or complications reported |

|
|
| Patient
Information |
|
|
Intended for twice daily dosing; keep eye open and do not blink for 30
seconds after instillation; wear sunglasses to avoid photophobic
discomfort |

|
|
| Nursing
Implications |
|
|
Monitor for systemic effect of beta-blockade |

|
|
| Dosage Forms |
|
|
Solution, ophthalmic, as hydrochloride: 0.3% (5 mL, 10
mL) |

|
|
Copyright © 2007 Drugs Area
|