fortaz (ceftazidime) is 20mg/kg SQ/IM q 72h

I would use the baytril (enrofloxacin) routine: 5 mg/kg IM q 24h resistant:10 mg/kg IM q 24h

IM = `intramuscular = in the muscle
q 24h = every 24 hours

there are you tube videos that shows how to give your snake a shot in the muscle. ralph davis shows how in one of them.

also, sometimes fortaz or a drug that's in that family is used with baytril. it makes the baytril work better and also helps in fighting bacteria that's not sensitive to baytril . I also used a drug called cefuroxime that works well with Amikacin or baytril.