Medically reviewed by Drugs.com. Last updated on Jun 27, 2020.
(fen il EF rin)
- Phenylephrine HCl
- Phenylephrine Hydrochloride
Excipient information presented when available (limited, particularly for generics); consult specific product labeling. [DSC] = Discontinued product
Gel, External, as hydrochloride:
Hemorrhoidal Cooling: 0.25% (51 g) [contains methylparaben, polysorbate 80, propylene glycol, propylparaben]
Preparation H: 0.25% (26 g, 51 g) [contains edetate disodium, methylparaben, polysorbate 80, propylene glycol, propylparaben]
Preparation H Totables: 0.25% (5.7 g [DSC]) [contains edetate disodium, methylparaben, polysorbate 80, propylene glycol, propylparaben]
Ointment, Rectal, as hydrochloride:
GRX Hemorrhoidal: 0.25% (43 g [DSC]) [contains benzoic acid, methylparaben, propylparaben]
Hemorrhoidal: 0.25% (56 g, 57 g) [contains benzoic acid, cetyl alcohol, methylparaben, propylparaben]
Hemorrhoidal: 0.25% (57 g) [contains benzoic acid, methylparaben, propylparaben]
Major-Prep Hemorrhoidal: 0.25% (57 g [DSC]) [contains benzoic acid, methylparaben, propylparaben]
Major-Prep Hemorrhoidal: 0.25% (57 g [DSC]) [contains methylparaben, propylparaben]
Preparation H: 0.25% (28 g, 57 g) [contains benzoic acid, methylparaben, propylparaben]
Suppository, Rectal, as hydrochloride:
Anu-Med: 0.25% (12 ea [DSC])
GoodSense Hemorrhoidal: 0.25% (12 ea) [contains methylparaben, propylparaben]
Hemorrhoidal: 0.25% (12 ea) [contains corn starch, methylparaben, propylparaben]
Hemorrhoidal: 0.25% (12 ea, 24 ea) [contains methylparaben, propylparaben]
Preparation H: 0.25% (12 ea, 24 ea, 48 ea) [contains corn starch, methylparaben, propylparaben]
Rectacaine: 0.25% (12 ea)
Brand Names: U.S.
- Anu-Med [OTC] [DSC]
- GoodSense Hemorrhoidal [OTC]
- GRX Hemorrhoidal [OTC] [DSC]
- Hemorrhoidal Cooling [OTC]
- Hemorrhoidal [OTC]
- Major-Prep Hemorrhoidal [OTC] [DSC]
- Preparation H Totables [OTC] [DSC]
- Preparation H [OTC]
- Rectacaine [OTC]
- Alpha-Adrenergic Agonist
- Antihemorrhoidal Agent
Potent, direct-acting alpha-adrenergic agonist with virtually no beta-adrenergic activity; produces local vasoconstriction.
Use: Labeled Indications
For OTC use as treatment of hemorrhoids
Hypersensitivity to phenylephrine or any component of the formulation; hypertension; ventricular tachycardia
Ointment: Apply to clean, dry area up to 4 times/day
Suppository: Insert 1 suppository rectally up to 4 times/day
Refer to adult dosing.
Hemorrhoids, anorectal protection: Children ≥12 years and Adolescents:
Ointment: Topical or rectal: Apply to rectal area or by applicator into rectum up to 4 times daily (eg, morning, night, and after bowel movements)
Suppository: Rectal: Insert 1 suppository into rectum up to 4 times daily (eg, morning, night, and after bowel movements)
Alpha1-Blockers: May diminish the vasoconstricting effect of Alpha1-Agonists. Similarly, Alpha1-Agonists may antagonize Alpha1-Blocker vasodilation. Monitor therapy
AtoMOXetine: May enhance the hypertensive effect of Sympathomimetics. AtoMOXetine may enhance the tachycardic effect of Sympathomimetics. Monitor therapy
Cannabinoid-Containing Products: May enhance the tachycardic effect of Sympathomimetics. Monitor therapy
Cocaine (Topical): May enhance the hypertensive effect of Sympathomimetics. Management: Consider alternatives to use of this combination when possible. Monitor closely for substantially increased blood pressure or heart rate and for any evidence of myocardial ischemia with concurrent use. Consider therapy modification
Doxofylline: Sympathomimetics may enhance the adverse/toxic effect of Doxofylline. Monitor therapy
Ergot Derivatives: May enhance the hypertensive effect of Alpha1-Agonists. Ergot Derivatives may enhance the vasoconstricting effect of Alpha1-Agonists. Avoid combination
Guanethidine: May enhance the arrhythmogenic effect of Sympathomimetics. Guanethidine may enhance the hypertensive effect of Sympathomimetics. Monitor therapy
Iobenguane Radiopharmaceutical Products: Alpha1-Agonists may diminish the therapeutic effect of Iobenguane Radiopharmaceutical Products. Management: Discontinue all drugs that may inhibit or interfere with catecholamine transport or uptake for at least 5 biological half-lives before iobenguane administration. Do not administer these drugs until at least 7 days after each iobenguane dose. Avoid combination
Linezolid: May enhance the hypertensive effect of Sympathomimetics. Management: Reduce initial doses of sympathomimetic agents, and closely monitor for enhanced pressor response, in patients receiving linezolid. Specific dose adjustment recommendations are not presently available. Consider therapy modification
Monoamine Oxidase Inhibitors: May enhance the hypertensive effect of Alpha1-Agonists. While linezolid is expected to interact via this mechanism, management recommendations differ from other monoamine oxidase inhibitors. Refer to linezolid specific monographs for details. Avoid combination
Ozanimod: May enhance the hypertensive effect of Sympathomimetics. Management: Concomitant use of ozanimod with sympathomimetic agents is not recommended. If combined, monitor patients closely for the development of hypertension, including hypertensive crises. Consider therapy modification
Solriamfetol: Sympathomimetics may enhance the hypertensive effect of Solriamfetol. Sympathomimetics may enhance the tachycardic effect of Solriamfetol. Monitor therapy
Sympathomimetics: May enhance the adverse/toxic effect of other Sympathomimetics. Monitor therapy
Tedizolid: May enhance the hypertensive effect of Sympathomimetics. Tedizolid may enhance the tachycardic effect of Sympathomimetics. Monitor therapy
Tricyclic Antidepressants: May enhance the therapeutic effect of Alpha1-Agonists. Tricyclic Antidepressants may diminish the therapeutic effect of Alpha1-Agonists. Monitor therapy
Rare systemic effects may occur.
• Cardiovascular disease, including ischemic heart disease: Use caution.
• Diabetes mellitus: Use caution.
• Hyperthyroidism: Use caution.
• Elderly: Use caution.
• Use with caution in patients with increased intraocular pressure or prostatic hyperplasia. Notify healthcare provider if symptoms do not improve within 7 days or if bleeding occurs.
When administered intravenously, phenylephrine crosses the placenta. Refer to the Phenylephrine (Systemic) monograph for details. There is limited information available supporting the use of topical agents for the treatment of hemorrhoids. Products containing phenylephrine should be used with caution in pregnant women, especially patients with hypertension or diabetes.
What is this drug used for?
• It is used to treat signs of hemorrhoids or rectal irritation.
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
• Rectal bleeding
• Rectal pain
• Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
Note: This is not a comprehensive list of all side effects. Talk to your doctor if you have questions.
Consumer Information Use and Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a limited summary of general information about the medicine’s uses from the patient education leaflet and is not intended to be comprehensive. This limited summary does NOT include all information available about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not intended to provide medical advice, diagnosis or treatment and does not replace information you receive from the healthcare provider. For a more detailed summary of information about the risks and benefits of using this medicine, please speak with your healthcare provider and review the entire patient education leaflet.
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