List of mRNA vaccines

The messenger RNA is used inside cells and then broken down; it does not enter the cell nucleus or alter your genetic code. The immune response can include a sore arm, tiredness, headache, fever, or muscle aches for a short time. These reactions reflect immune activity, but their absence does not show that vaccination failed. The exact vaccine product and recommended schedule depend on the infection, age, health, and current local guidance.

Bring a record of previous doses and tell the vaccinator about severe allergies, a prior reaction to a vaccine, pregnancy, immune-suppressing treatment, or a current illness. Stay for the observation period advised by the clinic. Rest, drink fluids, and use symptom relief only if suitable for you. Ask how to report a reaction and whether another dose is recommended.

Seek urgent medical help for trouble breathing, swelling of the face or throat, collapse, or widespread hives soon after vaccination. Contact a clinician for chest pain, shortness of breath, a racing or irregular heartbeat, or symptoms that are severe or worsening. A vaccination centre can explain expected local reactions and the safest next step.

Ask which product is offered, what protection it targets, which reactions are expected, how your medical history affects timing, and whether you need to bring documentation of earlier doses.