What antibiotics should not be taken with juice or milk Why?

Antibiotics such as tetracycline and ciprofloxacin should not be taken with juice or milk because these beverages contain calcium and other compounds that can bind to the antibiotics, reducing their absorption and effectiveness. Specifically, calcium can form insoluble complexes with these medications, leading to decreased therapeutic levels in the bloodstream. It's recommended to take these antibiotics with water and to separate their intake from dairy products or calcium-fortified juices by several hours.