Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Tobrex (tobramycin) and Besivance (besifloxacin) are both prescription eye drops used to treat bacterial eye infections, but they belong to different classes of antibiotics. Tobrex is an aminoglycoside antibiotic available in both brand-name and generic forms, while Besivance is a fluoroquinolone antibiotic and is only available as a brand-name medication. Tobrex can be used for people as young as 2 months old and comes in both eye drop and ointment forms, whereas Besivance is approved for use in children 1 year and older and is only available as eye drops. Tobrex is typically used multiple times per day, with the frequency depending on the severity of the infection, while Besivance is used three times per day for 7 days. Common side effects of Tobrex include eyelid itching, swelling, and eye redness, whereas Besivance may cause temporary eye redness or irritation. Both medications should be used for the full prescribed duration to prevent the infection from returning or becoming harder to treat.
Tobramycin (Tobrex)
Besivance (besifloxacin)
Tobramycin (Tobrex)
Besivance (besifloxacin)
Summary of Tobrex vs. Besivance
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
Besivance is a prescription eye drop used to treat bacterial pink eye in adults and children 1 year of age and older. It belongs to the fluoroquinolone antibiotic class. The dosage is typically 1 drop three times per day for 7 days to treat the eye infection. Currently it's available only as a brand-name medication as a generic is not yet available. Side effects aren't common, but include eye redness.
Indications of Tobrex vs. Besivance
Indications for
•Bacterial infections of the eye or eyelid
Indications for
•Bacterial conjunctivitis (pink eye) in people ages 1 year and older
Pros and Cons of Tobrex vs. Besivance
Pros and Const for Aminoglycoside antibiotic
Pros
•Treats various bacterial eye and eyelid infections
•Ointment form requires fewer doses per day than most alternatives
•Eye drop form is available as a lower-cost generic
Cons
•Can cause temporary eye irritation
•Might require more frequent dosing throughout the day for severe infections
•Ointment form tends to be messy and harder to put in the eye
Pros and Const for Fluoroquinolone antibiotic
Pros
•Applied directly to the eye to target the infection