Has anyone had any side effects from this? I notice the contraindications say there are 'no known' side effects?

One of my girls was on Synulox from day of mating until the litter was born, as she was bleeding quite heavily all the way through pregnancy. she had a lovely healthy litter of 7 chunky pups.

one of my girls was also on synulox while carry a litter- no side affects

Also Ceporex is a safe antibiotic for pregnant bitches. Not sure if it's derived from penicillin though.