Topagen Spray (Canada)

The relative ratio of C₁ : C_1A : C₂ is variable in a range of 25-60 : 10-40 : 20-50 % (Veterinary)

Betamethasone Valerate Is

9α - fluoro - 11β, 17,21 - trihydroxy - 16β - methylpregna - 1,4 - diene - 3,20 - dione 17 - valerate

Action

Gentamicin, a broad spectrum antibiotic, is a highly effective topical treatment for bacterial infections. Gentamicin is bactericidal in vitro against a wide variety of gram-positive and gram-negative bacteria isolated from domestic animals.^1,2 Specifically gentamicin is active against the following organisms: Alcaligenes sp., Citrobacter sp., Klebsiella sp., Pseudomonas aeruginosa, Proteus sp. (indole positive and negative), Escherichia coli, Enterobacter sp., Staphylococcus sp., and Streptococcus sp.

Betamethasone valerate in veterinary medicine has been shown to provide anti-inflammatory and antipruritic activity in the topical management of corticosteroid responsive infected superficial lesions in dogs.

Topagen Spray Indications And Clinical Uses

TOPAGEN^® spray is indicated for the treatment, in dogs, of superficial lesions infected by the bacteria: Alcaligenes sp., Citrobacter sp., Klebsiella sp., Pseudomonas aeruginosa, indole positive and negative Proteus sp., Escherichia coli, Enterobacter sp., Staphylococcus sp., and Streptococcus sp. which are susceptible to gentamicin.

Topagen Spray Dosage And Administration

Prior to treatment, remove excessive hair and clean the lesion and adjacent area. Hold bottle upright 3 to 6 inches from the lesion and depress the sprayer head twice. Administer four times daily for 7 days.

Each depression of the sprayer head delivers 0.7 ml of TOPAGEN^® spray, containing 0.4 mg gentamicin and 0.2 mg betamethasone.

Contraindications

If hypersensitivity to any of the components occurs, treatment should be discontinued and appropriate therapy instituted. TOPAGEN^® spray is not indicated for the treatment of fungal infections of the skin of dogs.

Precautions

Antibiotic susceptibility of the pathogenic organism(s) should be determined prior to use of this preparation. Use of topical antibiotics may permit overgrowth of non-susceptible bacteria, fungi or yeasts. If this occurs, treatment should be instituted with the other appropriate agents as indicated.

Administration of recommended dose beyond seven days may result in delayed wound healing. Animals treated longer than seven days should be monitored closely.

Adverse systemic reactions have been observed following the oral ingestion of some topical corticosteroid preparations. Dogs should be closely observed for the usual signs of adrenocorticoid overdosage which include sodium retention, potassium loss, fluid retention, weight gains, polydipsia and / or polyuria. Prolonged use or overdosage may produce adverse immunosuppressive effects.

Although topical steroids have not been reported to have an adverse effect on pregnancy, the safety of their use on pregnancy has not been established. Therefore, TOPAGEN^® spray should not be used extensively on pregnant dogs, in large amounts, or for prolonged periods of time.

Toxicology

TOPAGEN^® spray was well tolerated in an abraded skin study in dogs. No treatment-related toxicological changes in the skin were observed.

Systemic effects directly related to treatment were confined to histological changes in the adrenals, liver, and kidney and to organ-to-body weight ratios of the adrenals. All were dose-related, were typical for or not unexpected with corticosteroid therapy, and were considered reversible with cessation of treatment.

Side Effects

The possibility of delayed wound healing and sensitivity should be kept under consideration.

How Supplied

Available in a plastic spray bottle containing 70 ml of TOPAGEN^® spray. Product code: 787070

Store upright between 2° and 30°C.

Bibliography

1. Hennessey PW, et al
In vitro activity of gentamicin against bacteria isolated from domestic animals.
Veterinary Medicine / Small Animal Clinician, November 1971, p. 1118-1122.

2. Bachman HJ, et al
Comparative in vitro activity of gentamicin and other antibiotics against bacteria isolated from clinical samples from dogs, cats, horses, and cattle. Veterinary Medicine / Small Animal Clinician, October 1975, p. 1218-1222.

^® Registered trademark of Intervet Canada Corp.

Intervet Canada Corp., Kirkland QC, H9H 4M7

1 888 306-0069

71-422134 E

REV:12AUG2009

Nac No.