Having worked in medical malpractice defense, do NOT talk to CVS. Be sure that you preserve any evidence that you have which substantiates that he actually received the wrong medicine mixed in with his medicine. If you feel that you want to pursue legal action, then talk to a personal injury lawyer. But I will offer this advice to you.

If the only contraindication that you were able to identify was the grapefruit juice and/or apple juice item, then think real hard about it. Remember that when a drug company is granted a license to distribute a drug, the Food and Drug Administration requires them to publish possible reactions that far exceed anything that could more than likely happen in a million years. (exageration) What I'm getting at is, they have to publish so much stuff to cover their arses, that the chances of anyone actually being harmed as a result of some of the stuff they are required to pubish is very very slim. What this means to you and your husband is even if he did take the pill, he may not have and probably did not have any actual, measurable damage as a result of taking it.

Actually, grapefruit juice and apple juice tend to simply render a medication ineffective. So they tell you to avoid those foods.

It's really up to you. Most of the time, personal injury lawyers do grant an initial interview free of charge so it might not cost you anything to find out if it would be worth pursuing.

Best of luck. I'm glad he was not seriously harmed.