ExoticRx · exoticrx.com/drugs/selenium-sulfide
US brand names:Selsun Blue
Cytostatic agent reducing epidermal turnover rate. Antifungal activity against Malassezia. Keratolytic and anti-seborrheic.
TOXIC TO CATS — do not use. Dogs: rinse thoroughly. Eye irritation. Drying to skin. 2.5% is prescription strength. May worsen dry seborrhea.
Species references:All Cat (Domestic) drugsAll Dog (Domestic) drugs
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
A dog/cat sample is shown here. Cited dosing for all 2 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Dog (Domestic) | Topical | Leave on 10 minutes then rinse | 2x weekly | Moderate | Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.1467 (2026-08-01). |
| Dog (Domestic) | Topical | TOXIC TO CATS | q3-7 days shampoo | Moderate | Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.1467 (2026-08-01). |
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