If I am on a medication I always read the pamphlet. If it's a particularly dangerous med when used incorrectly I consult with the pharmacist. As I indicated it

If I am on a medication I always read the pamphlet. If it's a particularly dangerous med when used incorrectly I consult with the pharmacist. As I indicated it is free. If I still don't have answers I call my doctor, or find a doctor I can call. I'm not some super star. I'm not even what I would consider "health conscious". I just know that I don't know something about a drug I am taking and should figure out more. My burden taking a medication is on a percentage basis an edge case for the general "eating stuff" problem. So the onus is on me to resolve this edge case. If you really desire some sort of campaign to stop this there are ways that don't impede on businesses and other's lives. You could run commercials about pharmaceutical pamphlets, you could fund a website where people could find their drug and learn quickly about interactions, you could make it a legal obligation of doctors and pharmacists to both tell you the necessary precautions with your medication. All of these would be better solutions than some safety theater like a warning label on an unambiguously safe product except to people taking certain medications. To exemplify this most diet soda contains a required notice "caution phenylketonurics: contains phenylalanine." Did you know this? Do you think the average person finds utility in this? If you are a phenylketonuric you most likely already know about the risks and what to avoid with your condition. Not only that it's incredibly rare on a population basis (~1/15,000). It's not the onus of a business to put this theater on their foods unless the chemical is dangerous to a majority (such as tar in tobacco).