Common questions about Acular IS 0.4% (FAQ)
Q: Is Acular IS 0.4% the same as just Acular?
Official regulatory documents describe Acular IS 0.4% as a reformulation of the previously approved Acular 0.5% solution. The 0.4% concentration contains a lower amount of the active ingredient, ketorolac tromethamine, and a lower amount of the preservative compared to the older 0.5% formulation.
Q: Why is the strength 0.4% instead of something else?
Studies comparing the 0.4% concentration to the previous 0.5% concentration found that the 0.4% formulation was associated with less reported patient discomfort upon instillation. This specific concentration was developed and studied for its role in reducing pain and burning/stinging sensations following corneal refractive surgery.
Q: What if the eye drops sting a lot; is that a sign of something serious?
A stinging or burning sensation upon instillation is noted in official labeling as a very common adverse reaction. However, serious, sight-threatening reactions, such as corneal damage, are also associated with pain. Regulatory labeling indicates that patients should consult a healthcare professional immediately if their condition worsens or if pain or trauma occurs.
Q: Can using these drops make my eye more sensitive to light?
Yes, sensitivity to light, known as photophobia, has been reported as an adverse reaction in official product information. This effect is one of the clinically relevant side effects that patients may experience when using the drops.
Q: Are there any specific activities to avoid while using these eye drops?
Official labeling specifically requires that the drops must not be administered while wearing soft contact lenses, due to the presence of the preservative. Official labeling does not contain a general restriction on driving or operating machinery; however, patients should be aware that temporary blurred vision is a reported event that could affect these activities.
Q: What happens if I miss putting in a dose of Acular IS 0.4%?
Official patient information states that a missed dose should be applied as soon as it is remembered. However, if it is almost time for the next scheduled dose, the missed dose should be skipped entirely. Patients are instructed not to apply a double dose to compensate for the forgotten one.
Q: Are there any long-term research studies on the safety of Acular IS 0.4%?
Clinical trials typically evaluate the use of the drug for a short-term course, such as up to four days for its specific indication. Official safety warnings note that postmarketing experience with topical NSAIDs suggests that use beyond 14 days post-surgery may increase the risk for serious corneal adverse events, such as ulceration or thinning.
Q: What preservatives are in the Acular IS 0.4% formulation?
The official product information states that the formulation contains benzalkonium chloride (0.006%) as the preservative. This ingredient is noted in official labeling because it can be absorbed by and discolor soft contact lenses, which is why the drops must not be used while wearing them.
Q: What is the recommended period of use for Acular IS 0.4% according to labeling?
For the reduction of ocular pain and burning/stinging following corneal refractive surgery, the recommended regimen is up to 4 days of use. Related ketorolac products approved for other indications, such as post-cataract inflammation, may specify a slightly longer period of use, typically up to two weeks.
Q: How long after opening should I throw away the bottle of Acular IS 0.4%?
Regulatory patient information instructs users to dispose of the bottle 28 days after first opening, even if there is still solution remaining. This time limit helps maintain the sterility of the drops and minimizes the risk of contamination.
Q: Can Acular IS 0.4% be used for non-surgical eye pain?
The official labeling specifies that this product is indicated for the reduction of pain and burning/stinging following corneal refractive surgery. The FDA has also approved a related ketorolac product for the temporary relief of ocular itching due to seasonal allergic conjunctivitis, but use for general, non-surgical eye pain is not listed as an indication.
Q: What evidence supports the use of Acular IS 0.4% after cataract surgery?
While the 0.4% formulation was studied specifically for refractive surgery, clinical literature supported by government resources confirms that topical NSAIDs, including ketorolac, are used after cataract surgery. They are intended to reduce postoperative inflammation and the risk of complications such as cystoid macular edema (CME).
Q: Is Acular IS 0.4% used to prevent swelling or treat existing swelling?
The medication’s primary role is to provide anti-inflammatory relief by blocking the production of chemical mediators in the eye. Clinical studies and indications support its use for the reduction and treatment of inflammation related to eye procedures, indicating a role in both prophylactic (preventative) and therapeutic use.
Q: Is Acular IS 0.4% available over the counter?
No. The official product information classifies Acular IS 0.4% as a Human Prescription Drug and is labeled as 'Rx Only.' It is not available for purchase without a prescription.
Q: What happens if I accidentally put more drops in than prescribed?
Regulatory patient instructions state that if more drops than prescribed are accidentally applied, this is considered unlikely to lead to unwanted side effects. The next dose should be applied at the regularly scheduled time.
Q: Do regulatory agencies classify Acular IS 0.4% as a high-risk medication?
Regulatory agencies do not use a general 'high-risk' classification, but they do detail specific serious risks associated with use. Official documents warn of the potential for delayed healing and serious corneal adverse events (like ulceration), particularly when the medicine is used for longer than the recommended short duration.
Q: Is Acular IS 0.4% the generic name or a brand name?
Acular IS 0.4% is the brand name designation for the eye drop formulation. The generic name for the active ingredient contained within the drops is ketorolac tromethamine ophthalmic solution.
Q: What is the difference between Acular IS and other ketorolac eye drops?
Acular IS is a specific brand formulation of ketorolac tromethamine 0.4%. Official information describes its distinction from older formulations as having a lower concentration (0.4% compared to 0.5%) and a lower amount of the preservative benzalkonium chloride.
Q: Does the medicine come in a single-use vial or a multi-dose bottle?
The medicine is typically supplied in a multi-dose plastic bottle with a dropper tip. Because it is a multi-dose bottle, it contains the preservative benzalkonium chloride and requires the user to follow storage instructions carefully.
Q: What are the ingredients in Acular IS 0.4% that cause allergic reactions?
Official information notes that allergic reactions may occur due to either the active ingredient, ketorolac tromethamine, or any of the inactive components, including the preservative benzalkonium chloride. The product is strictly contraindicated for anyone with a known hypersensitivity to any component or other similar drugs, such as aspirin.
