FDA pharmacologic class
Aminoglycoside Antibacterial
5 medicines are in FDA's class of aminoglycoside antibacterials: tobramycin (Tobi), gentamicin (Gentak), neomycin, amikacin (Arikayce) and streptomycin; 10 combination products also contain one. 14 of the 15 are listed from generic labelers (FDA NDC Directory, October 8, 2026). The lowest pharmacy cost is triple antibiotic ointment at $0.111 per gram (NADAC).
Which medicines are aminoglycoside antibacterial?
| Medicine | Brand names | Generic labelers (all forms) | Pharmacy cost | Boxed warning | Shortage | Recalls since 2012 |
|---|---|---|---|---|---|---|
| Bacitracin and neomycin and polymyxin b | none listed | 1 labeler | $0.111 per gram Triple antibiotic ointment | No | No current entry | 0 |
| Tobramycin | Tobi, Tobrex, Kitabis | 40 labelers | $1.08 per mL 300 mg/5 mL ampule | No | A presentation being discontinued | 8 |
| Gentamicin | Gentak | 24 labelers | $1.30 per mL 80 mg/2 mL vial | No | No current entry | 9 |
| Dexamethasone and tobramycin | Tobradex | 8 labelers | $4.18 per mL Tobramycin-dexameth eye suspension | No | No current entry | 1 |
| Hydrocortisone and neomycin and polymyxin b | none listed | 14 labelers | $5.09 per mL Neomycin-polymyxin-hc ear solution | No | No current entry | 0 |
| Dexamethasone and neomycin and polymyxin b | Maxitrol, Neo | 10 labelers | $1.78 per mL Neomyc-polym-dexameth eye drop | No | No current entry | 2 |
| Neomycin | none listed | 4 labelers | $0.833 per tablet 500 mg tablet | Yes | No current entry | 6 |
| Amikacin | Arikayce | 6 labelers | $2.33 per mL 500 mg/2 mL vial | Yes | No current entry | 4 |
| Loteprednol and tobramycin | Zylet | 2 labelers | $39.26 per mL 0.3%-0.5% eye drop | No | No current entry | 0 |
| Bacitracin, hydrocortisone, neomycin and polymyxin b | none listed | 1 labeler | $5.52 per gram Neo-bacit-poly-hc eye ointment | No | No current entry | 0 |
| Gramicidin and neomycin and polymyxin b | none listed | 2 labelers | $4.59 per mL Neomyc-polym-gramicid eye drop | No | No current entry | 0 |
| Neomycin and polymyxin b | none listed | 1 labeler | n/a | No | No current entry | 0 |
| Colistin, hydrocortisone, neomycin and thonzonium | Cortisporin | none listed | $21.98 per mL Cortisporin-tc ear suspension | No | No current entry | 0 |
| Fluocinolone and neomycin | Neo-Synalar | 1 labeler | n/a | No | No current entry | 0 |
| Streptomycin | none listed | 1 labeler | n/a | Yes | No current entry | 0 |
Source: FDA Established Pharmacologic Class (NDC Directory, openFDA); CMS NADAC of October 7, 2026; FDA shortages and recalls (FDA files October 8, 2026)
What do pharmacies pay?
Each medicine's most widely listed form, per unit, in the NADAC survey: what pharmacies paid, not what a patient pays; strengths differ, so compare like with like.
Source: CMS National Average Drug Acquisition Cost (NADAC) survey, October 7, 2026: what retail pharmacies paid per unit; not a counter price