The study, published in the journal Nature Communications, found that when certain drugs are combined, they can interfere with each other's metabolism, leading to a build-up of toxic substances in the body.

This can happen even when the drugs are taken at the recommended doses, and it can be difficult to predict which drug combinations will cause problems.

The researchers say their findings could help doctors to develop safer drug combinations and to identify patients who are at risk of side effects.

The study involved analyzing data from over 100,000 patients who had been hospitalized for drug-induced liver injury.

The researchers found that certain drug combinations were more likely to cause liver damage than others.

For example, the combination of acetaminophen (Tylenol) and the antibiotic ciprofloxacin (Cipro) was found to be particularly dangerous.

The researchers say that their findings could help doctors to avoid prescribing these dangerous drug combinations.

They also say that patients should be aware of the potential risks of drug interactions and should talk to their doctor about any concerns they have.

The study is a reminder that even common drugs can have serious side effects when they are combined with other medications.

It's important to talk to your doctor about all of the medications you are taking, including over-the-counter drugs and supplements, so that they can check for potential interactions.