Active substance:
 | selamectin (mg)  | 
Stronghold 15 mg for cats and dogs  | 15  | 
Stronghold 30 mg for dogs  | 30  | 
Stronghold 45 mg for cats  | 45  | 
Stronghold 60 mg for cats  | 60  | 
Stronghold 60 mg for dogs  | 60  | 
Stronghold 120 mg for dogs  | 120  | 
Stronghold 240 mg for dogs  | 240  | 
Stronghold 360 mg for dogs  | 360  | 
 Excipients:
Butylated hydroxytoluene 0.8 mg.
For the full list of excipients, see section 'Pharmaceutical particulars'.