Consumer advocate: Even relatively minor drug-related interactions can still be harmful to patients.
Conclusion (Therefore)
The government should require drug companies to notify consumers of all known drug-related interactions.
Evidence
Relatively minor drug-related interactions can still be harmful to patients (such as the fact that fruit juice can render aspirin ineffective, leading to people either not getting the pain relief they expected or to people taking more aspirin than necessary).
Evaluate
Given that ... relatively minor drug-related interactions can be harmful to patients (such as the fruit juice / aspirin example),
How can we argue that ... drug companies should not be required to notify consumers of all known drug-related interactions?
The author is presenting one potential upside of this Plan / Recommendation (people taking aspirin would realize not to take it with fruit juice). We should try to think of potential downsides.
Goal
Look for an answer bringing up something negative about the plan of requiring drug companies to notify consumers of all known drug-related interactions.
Is there some way in which it wouldn't be feasible or cost prohibitive? (Maybe it's impossible or impossibly costly to figure out every single way a new drug could interact with every other substance.
Could it backfire in some way? (would people suddenly be afraid to take their needed medicines because they read about a possible interaction that is extremely rare but scares them out of taking their meds?)