[smartpuppiepets]

I never heard of any injection to treat this....
But the powder medication you got , acctually is called Panacur -C, or SafeGUARD , can be purchased and given for a few days and will get rid of it. It is very mild and it can be given for 25 days or more even for pregnant females ( i never used it like this but you can read some on the Panacur website) .
It also kills worms and tapeworms. It is what i heard works and i use it on all my dogs since it is actually a nice dewormer. Good luck and it looks like you got tons of good advice here ...