Needle-free injection (NFI) technology is an advanced drug delivery system that eliminates the need for traditional needles. Instead, it uses a high-speed jet of liquid or powder to penetrate the skin and deliver medication into intradermal, subcutaneous, or intramuscular tissues. This approach helps overcome challenges associated with conventional syringes, such as pain, fear of needles, accidental injuries, and risks of infection from reuse. NFI systems are valuable in many fields, including large-scale vaccination, insulin delivery for diabetes, dermatology, and hormone therapy. They are also being explored for biologics, gene therapies, and other sensitive drugs. Several devices, such as Biojector, Vitajet, Intraject, and Madajet, are already available and have shown positive outcomes in clinical use. Different mechanisms spring-powered, gas-propelled, laser-based, and shock-wave systems make these devices versatile for various medical needs. Their main benefits include reduced pain, improved patient comfort, faster administration, and elimination of needle-related hazards. However, challenges remain, including higher device costs, limited drug compatibility, and the need for training. Ongoing research is focused on improving precision, safety, and affordability. With growing demand for painless and safe alternatives, needle-free systems are expected to play a major role in future healthcare by enhancing patient compliance, supporting mass immunization, and expanding applications across multiple therapeutic areas.
1Miss Yashasvi Prakash Bansode, *2Miss Sanika Vijay Jadhav, 3Miss Shital Mohan Kharage, 4Miss Mayuri Santosh Nikam, 5Mr Ganesh Nagnath Thakur, 6Smt. S. S. Chavan (2026) studied this question.