I'm more concerned about it because I know he's a heavy drinker, so I'm worried that his liver might not cope.
I've googled, but the advice is very conflicting.
I've advised him to try drinking a lot of water and to ring NHS Direct, but I'm not sure how seriously he'll take it and he may give up on NHS Direct if they take a while to answer - should I be trying to get him worried so he'll do something, or is it not really a problem?