Does erythromycin ointment need to be applied while avoiding light?

Generally, erythromycin ointment does not need to be applied while avoiding light. The detailed analysis is as follows:

Erythromycin ointment is a topical antibiotic belonging to the macrolide class. Its main active ingredient is erythromycin, commonly used for treating minor burns, purulent skin diseases, and infected ulcerated surfaces, providing anti-inflammatory and antibacterial effects. The drug works primarily by inhibiting bacterial cell wall synthesis and suppressing bacterial reproduction. Exposure of erythromycin ointment to sunlight generally does not affect its efficacy, and it does not cause photosensitivity reactions. Therefore, there is no need to avoid light when applying erythromycin ointment. However, it should be used under medical guidance; blind self-selection or dose adjustment should be avoided to prevent adverse drug reactions and potential harm to health.

In addition, patients who are allergic to erythromycin or other macrolide antibiotics should not use this medication. If combination therapy is needed, professional medical advice should be sought. During treatment, a light and easily digestible diet is recommended, and spicy or irritating foods should be avoided to prevent interference with the drug's effectiveness.