Selamectin has been found to be safe and effective in a 2003 review.[5]
Selamectin has high safety ratings, with less than 1% of pets displaying side effects[citation needed]. In cases where side-effects do occur, they most often include passing irritation or hair loss at the application site. Symptoms beyond these (such as drooling, rapid breathing, lack of coordination, vomiting, or diarrhea) could be due to shock as a result of selamectin killing heartworms or other vulnerable parasites present at high levels in the bloodstreams of dogs.[citation needed] This would be a reaction due to undetected or underestimated infections prior to using the medication, rather than an actual allergic reaction to the drug itself.[citation needed]
Selamectin is sold under various brand names including Selehold, manufactured by KRKA, Selarid manufactured by Norbrook Laboratories Limited, Revolution and Stronghold manufactured by Zoetis, Revolt manufactured by Aurora Pharmaceuticals, and Senergy manufactured by Virbac.