Alternatives to Pred-G If You Can't Fill Your Prescription

Your ophthalmologist or optometrist prescribed Pred-G, but your pharmacy doesn't have it — and neither does the next one. If you're stuck without your eye drops, understanding your alternatives can help you have a productive conversation with your provider. This guide covers the most commonly prescribed substitutes for Pred-G, how they compare, and what to discuss with your eye doctor before making any switch.

Important: Never switch eye medications on your own. Always consult your prescribing provider before making any changes to your eye treatment plan.

What Makes Pred-G Unique — and Why Alternatives Aren't Exact Substitutes

Pred-G combines gentamicin (an aminoglycoside antibiotic) with prednisolone acetate 1% (a potent corticosteroid). The prednisolone acetate 1% component is a full-strength corticosteroid — the same steroid found in Pred Forte, which is considered the "workhorse" ophthalmic steroid for significant intraocular inflammation. The gentamicin covers Gram-negative organisms including Pseudomonas aeruginosa, which is an important consideration after eye injury or surgery.

Alternatives in the same drug class differ in their antibiotic component, steroid strength, or both. Your provider will choose based on your specific condition, organism coverage needed, and risk factors such as glaucoma.

Alternative 1: Tobradex (Tobramycin 0.3% / Dexamethasone 0.1%)

Tobradex is the most commonly prescribed ophthalmic antibiotic-steroid combination in the United States. It combines tobramycin — another aminoglycoside antibiotic — with dexamethasone 0.1%, a potent corticosteroid. Like Pred-G, it treats both bacterial infection and inflammation simultaneously.

Key difference from Pred-G: Uses tobramycin instead of gentamicin, and dexamethasone instead of prednisolone. Generic tobramycin/dexamethasone is widely available and typically costs $28–$55 with a discount card — significantly less than Pred-G.

Best for: Patients who need a widely available, lower-cost combination drop with good Gram-positive and Gram-negative coverage.

Alternative 2: Maxitrol (Neomycin 0.35% / Polymyxin B / Dexamethasone 0.1%)

Maxitrol is a triple-antibiotic plus steroid combination — neomycin and polymyxin B together with dexamethasone. It offers broader antibacterial coverage than single-antibiotic combination products, covering both Gram-positive and Gram-negative bacteria.

Key difference from Pred-G: Two different antibiotics instead of one. Neomycin has a higher rate of causing contact allergic reactions compared to gentamicin or tobramycin. Generic Maxitrol typically costs $15–$40 with a discount card.

Best for: Patients who need broad-spectrum antibiotic coverage and do not have a known neomycin allergy. One of the most affordable options.

Alternative 3: Zylet (Tobramycin 0.3% / Loteprednol 0.5%)

Zylet pairs tobramycin with loteprednol etabonate, a "soft" corticosteroid that is designed to reduce the risk of elevated intraocular pressure (IOP). Loteprednol metabolizes predictably in the eye, limiting systemic effects and reducing the steroid pressure spike that can occur with dexamethasone or prednisolone.

Key difference from Pred-G: Uses a softer steroid (loteprednol) that may be safer for patients with glaucoma risk. Brand-name Zylet costs $200–$400+ without insurance; generic availability is limited.

Best for: Patients at risk for steroid-induced glaucoma or elevated eye pressure, or those requiring longer treatment courses.

Alternative 4: Blephamide (Sulfacetamide 10% / Prednisolone Acetate 0.2%)

Blephamide combines sulfacetamide — a sulfa antibiotic — with a lower-strength prednisolone (0.2% vs. Pred-G's 1%). It's used primarily for blepharoconjunctivitis and mild inflammatory conditions. The prednisolone strength is lower than Pred-G, making it less appropriate for severe inflammation.

Key difference from Pred-G: Sulfa antibiotic instead of gentamicin; lower steroid concentration. Avoid if you have a sulfa allergy.

Side-by-Side Comparison

Here's a quick reference to compare these alternatives:

• Pred-G: Gentamicin + Prednisolone 1% | Brand-only | ~$161–$186 retail
• Tobradex: Tobramycin + Dexamethasone 0.1% | Generic available | $28–$55 generic with coupon
• Maxitrol: Neomycin + Polymyxin B + Dexamethasone 0.1% | Generic available | $15–$40 generic with coupon
• Zylet: Tobramycin + Loteprednol 0.5% | Limited generic | $200–$400+ brand
• Blephamide: Sulfacetamide + Prednisolone 0.2% | Generic available | Moderate cost; avoid if sulfa allergy

Before You Give Up on Pred-G

Before switching to an alternative, make sure you've truly exhausted the search for Pred-G. Use medfinder to check pharmacies near you, ask your current pharmacy to special order it, and try independent pharmacies in your area. In many cases, Pred-G can be found — it just takes a little more effort than a typical prescription.

For more context on why Pred-G is hard to find in the first place, read why is Pred-G so hard to find.