Approved indication: Oxervate is approved to treat neurotrophic keratitis, a rare disease in which loss of corneal nerve supply leads to nonhealing corneal defects and ulcers, in adults and in children 2 years of age and older.

Off-label or investigational uses: Clinicians may occasionally consider Oxervate for other severe or persistent corneal epithelial defects related to poor corneal innervation, but these uses are based mainly on small studies and case reports and are not established or FDA-approved indications.

Efficacy expectations: In clinical trials of adults with moderate to severe neurotrophic keratitis, about two-thirds to three-quarters of patients treated with Oxervate for 8 weeks achieved complete healing of the corneal surface, compared with roughly one-third or fewer on placebo drops, and a minority of initially healed patients later had recurrences.

Onset and durability of effect: Healing of the corneal surface is usually assessed after completing the full 8-week course, though some patients notice symptom improvement within several weeks; many maintain healing after treatment ends, but some require ongoing monitoring and may experience relapse.

Comparison with other treatments: Traditional therapies (lubricating drops, protective lenses, tarsorrhaphy, amniotic membrane) mainly protect the eye or provide a scaffold for healing, whereas Oxervate is a disease-modifying therapy that directly supplies nerve growth factor to address the underlying loss of corneal nerve support.

Typical dosing: For adults and children 2 years of age and older with neurotrophic keratitis, the recommended regimen is 1 drop of Oxervate in the affected eye or eyes 6 times a day, about every 2 hours during waking hours, for a total of 8 weeks.

How to use the drops:

• Wash your hands, remove contact lenses, and prepare the vial and pipette as instructed.
• Tilt your head back, pull down the lower eyelid, and instill a single drop into the pocket without touching the eye or lashes with the pipette tip.
• If you use other eye medicines, space them at least 15 minutes apart and use Oxervate first, before any gels, ointments, or thicker drops; wait at least 15 minutes before putting contact lenses back in.

Special dosing instructions: Use only the pipettes and adapters supplied with the kit, use a new pipette and wipe for each dose, and discard each vial at the end of the day (or 12 hours after the adapter is attached), even if some solution is left; if both eyes are treated you will typically need two vials per day.

Missed dose: If a scheduled dose is missed, do not double up; simply take the next dose at the usual time and continue the regular schedule.

Overdose: Accidentally using more than one drop at a time is unlikely to cause serious problems beyond increased local irritation, but if a large amount is used, if the solution is swallowed, or if you have significant eye pain or vision changes after extra doses, contact your eye specialist, poison control center, or emergency services for advice.

Common side effects: The most frequent side effect is eye pain or discomfort after the drops are placed; other commonly reported effects include eye redness, eye inflammation, foreign body sensation, light sensitivity, increased tearing, corneal deposits, headache, and mild eye irritation or eyelid inflammation, which are usually mild to moderate and occur during the 8-week treatment period.

Serious or rare adverse effects: Although serious events are uncommon, you should seek urgent eye care if you notice sudden worsening vision, severe eye pain, marked redness or swelling, signs of infection (pus, thick discharge, fever), or new dark spots or shadows in your vision.

Warnings and precautions (pregnancy, breastfeeding, age, medical problems): There are no adequate data in pregnant or breastfeeding women; decisions about use should balance the mother’s need for treatment against unknown risks to the baby. Safety and effectiveness have been established in children 2 years and older, and older adults respond similarly to younger adults. Because systemic absorption from the eye is minimal, no specific precautions are generally needed for kidney or liver disease, but any serious medical conditions and all other medicines should be reviewed with the prescriber.

Safety compared with other options: Unlike many systemic drugs, Oxervate acts locally on the eye with very low systemic exposure, so side effects are mainly ocular and systemic adverse effects are unlikely; however, the treatment is intensive (six daily doses) and can cause transient discomfort and redness.

Side-effect reporting and safety updates: Patients should report bothersome or unexpected side effects to their eye specialist, and serious or unexpected reactions can also be reported directly to FDA’s MedWatch program (online or by calling 1-800-FDA-1088) for ongoing safety monitoring.

Drug and product interactions: No specific interactions with systemic prescription or over-the-counter medicines have been identified, but if you use more than one eye medication, space them at least 15 minutes apart and apply Oxervate before any thicker eye products (gels or ointments); do not instill the drops while wearing contact lenses.

Food, alcohol, and supplements: Because Oxervate is applied only to the eye and systemic absorption is very low, interactions with foods, alcohol, herbal products, or vitamin supplements are not expected.

Medical conditions and co-medications requiring caution: Tell your eye specialist if you have active eye infections, severe eye surface inflammation, a history of allergic reactions to eye drops, or known allergy to any ingredient in Oxervate, and review all other eye medications you use so the timing of doses can be coordinated.

Monitoring needs: Regular ophthalmology follow-up during and after the 8-week course is important to check that the cornea is healing, adjust other eye treatments, and watch for recurrence; routine blood tests, heart monitoring, or blood pressure checks are not normally required for Oxervate alone.

Q: What is Oxervate used for?
A: Oxervate is an eye-drop treatment for neurotrophic keratitis, a rare condition where damaged or poorly functioning corneal nerves lead to nonhealing defects or ulcers on the surface of the eye.

Q: How long does it take for Oxervate to start working?
A: The medicine is usually given for 8 weeks, and while some people notice symptom improvement within a few weeks, the main goal is complete corneal healing by the end of the treatment course.

Q: Can I wear contact lenses while using Oxervate?
A: You must remove contact lenses before putting in Oxervate, may reinsert them 15 minutes after each dose if your doctor allows, and some patients are advised to avoid contact lenses entirely during treatment so the cornea can heal.

Q: What if my neurotrophic keratitis comes back after treatment?
A: A proportion of patients can have recurrence after initially healing, so regular follow-up is important; if problems return, your eye specialist will decide whether to repeat Oxervate, adjust other treatments, or use additional protective measures.

Q: Is Oxervate safe for children and older adults?
A: Oxervate has been shown to be safe and effective in children 2 years and older and in older adults, with a side-effect profile similar to that seen in younger adults, mainly involving temporary eye discomfort and redness at the time of dosing.

Storage: Keep the weekly Oxervate cartons in the refrigerator at 36°F to 46°F (2°C to 8°C), in the original packaging, and do not freeze them; remove the cartons from the insulated shipping container and refrigerate within about 5 hours of receiving them.

Daily vial handling: Each morning, take a vial (two vials if treating both eyes) from the refrigerator and attach the vial adapter as instructed; once the adapter is attached, the vial can be kept in the refrigerator or at room temperature up to 77°F (25°C) for the rest of the day, but must be discarded 12 hours after adapter attachment or at the end of the day, even if some solution remains.

Light and hygiene: Store vials upright, protected from light, and always use a new sterile pipette and disinfectant wipe for each dose to avoid contamination.

Disposal: Throw away used pipettes, wipes, and vials in the household trash out of reach of children and pets; do not reuse any components and do not pour leftover solution down the sink or toilet.