Was your black boxed med in-the fluroquinolone grouping?? . My reaction was to Levofloxin‼️. My damaged connnective tissues, ligaments and tendons have compromised my life forever😢. My Achilles tendons, and ligaments in my legs , knees ,ankles and all toes become locked as in hard as steel ,causing absolutely no mobility, and excruciating pain. A real liability for horrific falls. I understand these are wonderful meds for those who can tolerate it but one doesn’t know their immune system WON’T tolerate the antibiotic until it’s too late. and the Ill effects are ongoing, I took this antibiotic in 2016: still having what I call levofloxin attacks. Dangerous, (no balance, so falls are always a liability) and excruciatingly painful‼️. Some bad experiences caused by connective tissue cell impairment‼️