What are the excipients in toothpastes?

Joanne McEntee, Senior Medicines Information Pharmacist, North West Medicines Information CentrePublished
  • Toothpastes contain excipients that can cause adverse reactions affecting the mouth and lips, and systemic hypersensitivity.
  • Excipients most commonly implicated are flavourings such as spearmint, peppermint, fennel, cinnamon and cassia oil, but preservatives, foaming agents, antibacterials, pyrophosphates and essential oils can also cause adverse reactions.
  • This updated Medicines Q&A lists toothpastes widely available in the UK and the excipients they contain which have been associated with adverse reactions or may be undesirable.