How to Help Your Patients Find Latanoprost In Stock: A Provider's Guide

When a patient calls your office to report they cannot find latanoprost at their pharmacy, the clinical team needs a clear, efficient protocol. Latanoprost is the most-prescribed glaucoma drop in the US, yet supply disruptions at the retail level are a persistent issue. This guide equips ophthalmologists, optometrists, and their clinical staff with the tools to help patients quickly — without consuming excessive provider time.

Step 1: Direct the Patient to Use medfinder First

Before escalating to a bridge prescription, direct the patient to medfinder.com/providers. medfinder is a paid service that calls pharmacies near the patient's location to check which ones have latanoprost in stock and can fill their prescription. Results are texted to the patient. This approach can resolve the situation within hours without requiring a new prescription — and without your staff spending time on pharmacy calls.

Step 2: Confirm the Patient Has Checked Multiple Pharmacy Types

Many patients only call their usual chain pharmacy (CVS, Walgreens, Rite Aid) and assume a stock problem is universal. Educate patients that stock varies significantly between:

Independent pharmacies (often maintain stock through different wholesalers)

Costco and Walmart pharmacies (high volume, competitive pricing, different supply chains)

Grocery pharmacy chains (Kroger, H-E-B, Publix)

Mail-order pharmacies (Express Scripts, OptumRx, Amazon Pharmacy) — reliable for 90-day supplies

Step 3: Remind Patients to Ask About Other Generic Manufacturers

Multiple manufacturers produce FDA-approved generic latanoprost 0.005%: Bausch Health, Greenstone (Pfizer), Rising Pharmaceuticals, and Sandoz. If a pharmacy says latanoprost is out of stock, they may mean one NDC (National Drug Code) is unavailable. Teach patients to ask: "Do you have any manufacturer's version of latanoprost 0.005%?" A different manufacturer's version may be available on the same shelves.

Step 4: When to Issue a Bridge Prescription

If the patient cannot locate latanoprost within 24–48 hours and their current supply is critically low, issue a bridge prescription for the closest therapeutic alternative. Selection criteria:

Default substitute: Travoprost 0.004% (Travatan Z) — nearly equivalent efficacy, polyquad preserved or preservative-free options available, generic exists.

If maximum IOP reduction needed: Bimatoprost 0.01% or 0.03% (Lumigan) — slightly more potent, but more hyperemia and more expensive.

If ocular surface disease or preservative sensitivity: Tafluprost 0.0015% (Zioptan) — fully preservative-free, single-use vials, comparable efficacy.

Never combine: Do not combine two prostaglandin analogues — this can paradoxically increase IOP.

Step 5: Schedule an IOP Follow-Up After Any Switch

Any change in prostaglandin analogue should be followed by an IOP check within 4–6 weeks. While all prostaglandin analogues have similar class efficacy, individual patients may respond differently to specific agents. Document the substitution reason and the planned duration in the patient record.

Educating Patients: Refill Early, Build a Buffer

The best intervention is prevention. At every annual visit, remind glaucoma patients to:

Refill 10–14 days before the current bottle runs out

Request 90-day supplies when insurance allows

Never store an extra bottle at room temperature for more than 6 weeks (once opened); check expiration on all bottles

Know which nearby pharmacies typically stock their medication

Creating a Practice-Level Protocol

Consider creating a laminated reference card for your front desk and MAs that outlines the substitution hierarchy and key patient resources. See also our shortage overview for providers and direct patients to medfinder.com/providers for pharmacy location assistance.