What are the contraindications for using Houttuynia cordata eye drops?
Nov 18, 2025
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
Contraindications for Houttuynia cordata eye drops generally include hypersensitivity to Houttuynia cordata, ocular trauma, and severe eye infections. In cases of injury (such as corneal abrasion or globe perforation) or severe ocular infection, the eye is in a sensitive and vulnerable state. Houttuynia cordata eye drops are not suitable for such emergency conditions; inappropriate use may delay proper treatment and even worsen ocular damage.
Contraindications for the use of Houttuynia cordata eye drops generally include: individuals allergic to Houttuynia cordata should not use it; it is prohibited in cases of eye trauma or severe ocular infections; it must not be used if the medication has changed in appearance; use in infants and young children is strictly contraindicated; and it should not be mixed with certain other medications. Specific details are as follows:
1. Contraindicated for those allergic to Houttuynia cordata: Individuals who have previously shown allergic reactions to Houttuynia cordata or any other ingredient in the eye drops may experience adverse effects such as redness, swelling, itching, or rashes in the eyes after use. In severe cases, systemic symptoms like difficulty breathing may occur. Therefore, these individuals must strictly avoid using this product.
2. Contraindicated in eye injuries and severe ocular infections: In cases of ocular trauma (such as corneal scratches or perforated globe) or serious eye infections (such as suppurative keratitis), the eye is in a sensitive and vulnerable state. Houttuynia cordata eye drops are not suitable for managing such urgent conditions. Using them indiscriminately may delay proper treatment and potentially worsen eye damage.
3. Contraindicated if the medication's physical properties have changed: If the eye drop solution becomes cloudy, changes color, develops filaments or sediment, or if the bottle cap is loose or leakage occurs, this indicates that the medication has degraded. The active ingredients may have lost efficacy or generated harmful substances, which could irritate or infect the eye upon application. Use must be discontinued immediately under such circumstances.
4. Strictly contraindicated in infants and young children: The ocular tissues of infants and young children are not yet fully developed, and their tolerance to medications is low. There is insufficient safety data regarding the use of Houttuynia cordata eye drops in this population. Indiscriminate use may impair eye development or trigger adverse reactions. Therefore, use in infants and young children should only be considered after medical evaluation and under professional guidance—self-medication is not recommended.
5. Should not be mixed with certain other medications: If a patient is using other ophthalmic medications concurrently, Houttuynia cordata eye drops should not be directly mixed with them. Interactions between different drug components may reduce therapeutic effectiveness or generate toxic substances. If combination therapy is necessary, consult a physician and administer the medications at appropriately spaced intervals.
Prior to using Houttuynia cordata eye drops, carefully read the instructions to ensure no contraindications apply. If symptoms such as increased eye pain, blurred vision, or allergic reactions occur during use, discontinue the medication immediately and seek medical attention.
