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Medicine overview
Indications of Simplovir 500 mg/vial
Simplovir 500 mg/vial cream is a herpes simplex virus (HSV) nucleoside analogue DNA polymerase inhibitor indicated for the treatment of recurrent herpes labialis (cold sores) in immunocompetent adults and adolescents 12 years of age and older.
Theropeutic Class
Topical Antiviral preparations
Pharmacology
Simplovir 500 mg/vial is an antiviral drug active against herpes simplex virus. Simplovir 500 mg/vial is a synthetic purine nucleoside analogue with cell culture and in vivo inhibitory activity against HSV types 1 (HSV-1) and 2 (HSV-2). The inhibitory activity of Simplovir 500 mg/vial is highly selective due to its affinity for the enzyme thymidine kinase (TK) encoded by HSV. This viral enzyme converts Simplovir 500 mg/vial into Simplovir 500 mg/vial monophosphate, a nucleotide analogue. The monophosphate is further converted into diphosphate by cellular guanylate kinase and into triphosphate by a number of cellular enzymes. In cell culture, Simplovir 500 mg/vial triphosphate stops replication of herpes viral DNA. This inhibition is accomplished in 3 ways: 1) competitive inhibition of viral DNA polymerase, 2) incorporation into and termination of the growing viral DNA chain, and 3) inactivation of the viral DNA polymerase.
Dosage & Administration of Simplovir 500 mg/vial
Simplovir 500 mg/vial cream should be applied five times per day for four days. Therapy should be initiated as early as possible following the onset of signs or symptoms of herpes labialis i.e., during the prodrome or when lesions appear. For adolescents 12 years of age and older, the dosage is the same as in adults.
Interaction of Simplovir 500 mg/vial
Clinical experience has identified no interactions resulting from topical or systemic administration of other drugs concomitantly with Simplovir 500 mg/vial cream. Due to minimal systemic absorption of Simplovir 500 mg/vial cream, systemic drug interactions are unlikely.
Contraindications
Simplovir 500 mg/vial cream is contraindicated in patients with known hypersensitivity to Simplovir 500 mg/vial, valSimplovir 500 mg/vial, or any component of the formulation.
Side Effects of Simplovir 500 mg/vial
The most common adverse reactions at the site of topical application were dry lips, desquamation, dryness of skin, cracked lips, burning skin, pruritus, flakiness of skin, and stinging on skin; each adverse reaction occurred in less than 1% of patients receiving Simplovir 500 mg/vial cream and placebo. Three patients on Simplovir 500 mg/vial cream and one patient on placebo discontinued treatment due to an adverse event.
Pregnancy & Lactation
Pregnancy Category B. There are no adequate and well-controlled studies of Simplovir 500 mg/vial cream in pregnant women. Simplovir 500 mg/vial cream should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. It is not known whether topically applied Simplovir 500 mg/vial is excreted in breast milk. Systemic exposure following topical administration is minimal.
Precautions & Warnings
Simplovir 500 mg/vial cream should only be applied on the affected external aspects of the lips and face in patients with herpes labialis. Because no data are available, application to human mucous membranes is not recommended. Simplovir 500 mg/vial cream is intended for cutaneous use only and should not be used in the eye or inside the mouth or nose. Cream has a potential for irritation and contact. The effect of Simplovir 500 mg/vial cream has not been established in immunocompromised patients.
Storage Conditions
Store Simplovir 500 mg/vial cream at room temperature between 20°C to 25°C
Use In Special Populations
Pediatric Use: An open-label, uncontrolled trial with Simplovir 500 mg/vial cream 5% was conducted in 113 patients aged 12 to 17 years with recurrent herpes labialis. In this trial, therapy was applied using the same dosing regimen as in adults and subjects were followed for adverse events. The safety profile was similar to that observed in adults. Safety and effectiveness in pediatric patients less than 12 years of age have not been established.Geriatric Use: Clinical studies of Simplovir 500 mg/vial cream did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. Systemic absorption of Simplovir 500 mg/vial after topical administration is minimal.
Frequently Asked Questions
What is Simplovir 500 mg/vial used for?
Simplovir 500 mg/vial cream is a herpes simplex virus (HSV) nucleoside analogue DNA polymerase inhibitor indicated for the treatment of recurrent herpes labialis (cold sores) in immunocompetent adults and adolescents 12 years of age and older.
What is the dosage of Simplovir 500 mg/vial?
Simplovir 500 mg/vial cream should be applied five times per day for four days. Therapy should be initiated as early as possible following the onset of signs or symptoms of herpes labialis i.e., during the prodrome or when lesions appear. For adolescents 12 years of age and older, the dosage is the same as in adults.
What are the side effects of Simplovir 500 mg/vial?
The most common adverse reactions at the site of topical application were dry lips, desquamation, dryness of skin, cracked lips, burning skin, pruritus, flakiness of skin, and stinging on skin; each adverse reaction occurred in less than 1% of patients receiving Simplovir 500 mg/vial cream and placebo. Three patients on Simplovir 500 mg/vial cream and one patient on placebo discontinued treatment …
Who should not take Simplovir 500 mg/vial?
Simplovir 500 mg/vial cream is contraindicated in patients with known hypersensitivity to Simplovir 500 mg/vial, valSimplovir 500 mg/vial, or any component of the formulation.
What precautions should be taken with Simplovir 500 mg/vial?
Simplovir 500 mg/vial cream should only be applied on the affected external aspects of the lips and face in patients with herpes labialis. Because no data are available, application to human mucous membranes is not recommended. Simplovir 500 mg/vial cream is intended for cutaneous use only and should not be used in the eye or inside the mouth or nose. Cream has a potential for irritation and conta…
Is Simplovir 500 mg/vial safe during pregnancy and breastfeeding?
Pregnancy Category B. There are no adequate and well-controlled studies of Simplovir 500 mg/vial cream in pregnant women. Simplovir 500 mg/vial cream should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. It is not known whether topically applied Simplovir 500 mg/vial is excreted in breast milk. Systemic exposure following topical administration is…
Disclaimer
The information provided is accurate to our best practices, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy. The absence of specific information about a drug should not be seen as an endorsement. We are not responsible for any consequences resulting from this information, so consult a healthcare professional for any concerns or questions.