Well, that IS the concentration. The first one says 50mg/kg, the second one 200-250mg/kg,.. That's quite a difference.
This link looks like reliable information to me: http://www.vetpharm.uzh.ch/reloader.htm?wir/00003143/1397_05.htm?wir/00003143/1397_00.htm
- 10 mg/kg for 5 days (Van Miert 1994a)
- 25 mg/kg, repeat after 10 days (Claussen 1981)
Strongyliden, Askariden
- 20 - 100 mg/kg, repeat after 14 days (Funk 2006; Diethelm 2001)
Nematoden
- 20 - 25 mg/kg once per day for 2-4 days (Wilson 1996a)
- 20 - 25 mg/kg once, repeat after 2 weeks (Wilson 1996a)
This link looks like reliable information to me: http://www.vetpharm.uzh.ch/reloader.htm?wir/00003143/1397_05.htm?wir/00003143/1397_00.htm
- 10 mg/kg for 5 days (Van Miert 1994a)
- 25 mg/kg, repeat after 10 days (Claussen 1981)
Strongyliden, Askariden
- 20 - 100 mg/kg, repeat after 14 days (Funk 2006; Diethelm 2001)
Nematoden
- 20 - 25 mg/kg once per day for 2-4 days (Wilson 1996a)
- 20 - 25 mg/kg once, repeat after 2 weeks (Wilson 1996a)