Gelatin
- Gelatin commonly used vaccine ingredient is made by boiling skin or connective tissue, typically from a pig. Gelatin is used as a stabilizer to protect the viruses in vaccines from adverse conditions.
- It is a concerning additive because some people have gelatin allergies, and receiving a vaccine with gelatin can provoke an allergic response, possibly even triggering anaphylaxis.
- Depending on its source, gelatin may also be a religious concern for Jews and Muslims.
