Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Tobrex (tobramycin) and Quixin (levofloxacin) are both antibiotic eye drops used to treat bacterial eye infections, but they belong to different classes of antibiotics. Tobrex is an aminoglycoside antibiotic, while Quixin is a fluoroquinolone antibiotic. Tobrex is available in both eye drop and ointment forms and can be used for people as young as 2 months old. Quixin, on the other hand, is only available as an eye drop and is safe for children 6 years and older. Tobrex treats various bacterial eye infections, while Quixin is specifically used for bacterial conjunctivitis (pink eye) and corneal ulcers, with different strengths for each condition. Tobrex can cause side effects like eyelid itching and swelling, whereas Quixin may cause temporary eye burning, headaches, and changes in taste. Both medications require multiple doses per day and should be used for the full prescribed course to prevent the infection from returning.
Tobramycin (Tobrex)
Levofloxacin (eye drop)
Tobramycin (Tobrex)
Levofloxacin (eye drop)
Summary of Tobrex vs. Quixin
Summary for Aminoglycoside antibiotic
Prescription only
Tobramycin (Tobrex) is an antibiotic that's used to treat different types of bacterial eye infections. It can be used for people ages 2 months and older. Tobramycin (Tobrex) comes as an ophthalmic solution (eye drops) and eye ointment that are used multiple times per day. It's available in both brand-name and generic versions. The most common side effects include eyelid itching, eyelid swelling, and eye redness. Like with all antibiotics, you shouldn't stop treatment too early because your infection could come back or get harder to treat.
Summary for Fluoroquinolone antibiotic
Prescription only
Levofloxacin (eye drop) is an antibiotic eye drop that's used to treat pink eye (0.5% strength) or corneal ulcers (1.5% strength) caused by bacteria. You shouldn't use it for more than a few days to treat the infection. And you'll need to use it multiple times a day for it to work.