We've had zithro in the past and have had to go get a new bottle every 10 days. We ddrive past every day and they have a drive through so it's not a big deal. We do always make sure, though that they KNOW it's a 30 day scrip, so we should have ONLY ONE CO-PAY!!! Usually it's not a problem when we point it out but I tell whoever calls in the scrip to get in in the computer at the pharmacy just to be safe.