Throwing up after taking nausea medicine

Whether a dose was absorbed depends on the medicine, its formulation, and how soon vomiting happened. A tablet visible in vomit may not have been absorbed, while a dissolved dose may already be partly absorbed. Taking another dose can therefore lead to too much medicine. Nausea and vomiting may also come from acid reflux, food poisoning, gallstones, gastritis, gastroenteritis, heat exhaustion, hepatitis A, or low blood sugar. The medicine may be treating a symptom rather than its cause, so worsening illness needs review.

Write down the medicine name, strength, time taken, time of vomiting, and any other medicines used. Read the label or patient instructions for missed or vomited doses and ask a pharmacist before repeating it. Take small sips of clear fluid if you can keep them down; avoid taking several anti-sickness products together unless prescribed. Do not give someone else your medicine. If you have diabetes, check your glucose according to your care plan and seek advice if you cannot eat or drink.

Get urgent help for blood or coffee-ground material in vomit, severe or localised abdominal pain, a rigid or swollen abdomen, confusion, fainting, severe headache, yellow skin, very little urine, or breathing difficulty. Seek prompt assessment if vomiting prevents fluids or essential medicines from staying down, or if symptoms follow heat exposure. Suspected overdose, a wrong medicine, or accidental double dosing requires immediate poison or emergency advice; do not wait for symptoms.

Should I repeat this dose or wait until the next scheduled dose? Is another formulation suitable? Could the vomiting point to dehydration, infection, low blood sugar, or a digestive condition? Which symptoms mean I need emergency care?