6 links have been added on this idea.
  1. Blinko

    Dissolving liquid pills could be another top alternative for needle injections.

  2. ChrisP

    Check this out: An Indian university has created a shock syringe that delivers pain-free injections.
    https://www.indiatoday.in/education-today/news/story/iit-bombay-designs-needle-free-shock-syringe-for-painless-injections-2656151-2024-12-27