This is not a side effect. Jujube is sweet and warm, belonging to the spleen and stomach meridian. Has the effects of invigorating the middle energizer, invigorating qi, nourishing blood, calming nerves, and relieving medicinal properties. Herba Hedyotidis Diffusae of Scutellariae Barbatae has the functions of clearing away heat and toxic materials, relieving swelling and resolving hard mass, and Folium Iron has the functions of clearing away heat and toxic materials, cooling blood and stopping bleeding, and is used for clearing away heat and stopping bleeding and removing blood stasis from traumatic injury. Treat dysentery, hematemesis, hematochezia, stomachache, etc. These drugs have no side effects in modern research. Will not cause eye pain. Your eye pain should be caused by other reasons. See a doctor.