What about if you accidentally swallow just a tiny bit of biotene and your throat get slightly sore later?

If you accidentally swallow a tiny amount of Biotene and later experience a slight sore throat, it’s generally not a cause for concern. Biotene is formulated for oral use and is typically safe if ingested in small amounts. However, if the sore throat persists or worsens, or if you experience any unusual symptoms, it's best to consult a healthcare professional for further advice.