Fizz was due to be wormed about 4 weeks ago, but I couldn't as she was pregnant. Is it safe to worm her whilst she is nursing her kittens? When should I worm the kittens? I have ready this should be every fortnight from 2 weeks old

I usually use Drontal tablets, but looking online it appears I am paying my vet double the price from what I could be paying online Does anyone buy their worming/flea treatments online or is it better to get from the vet?

Thanks again,
Nic x