If you developed an allergic reaction after taking Hepasil Plus Suspension, you should stop taking the medicine and contact your doctor for further advice. Allergic reactions can sometimes cause symptoms such as itching, skin rash, redness, swelling, nausea, or stomach discomfort. In mild cases, the symptoms may improve after stopping the medicine, but if you develop severe itching, swelling of the face or lips, difficulty breathing, dizziness, or widespread rashes, seek immediate medical care because these can be signs of a serious allergy. Do not restart the medicine unless your doctor specifically advises it, as the reaction may worsen with repeated use. Your doctor may recommend an alternative medicine depending on your condition. It is also helpful to inform your doctor about any past medicine allergies so that safer alternatives can be chosen in the future. Drinking enough water, avoiding self-medication, and keeping a note of the medicine name for future reference can also help prevent similar reactions.