1. built-in spring for needle-free syringe is a precision machining, and ensures that the drugs entirely in the subcutaneous tissue at the injection site. The purchase of counterfeit products, cannot guarantee the drugs completely into the subcutaneous tissue, insulin injections, for example, if the liquid injected into muscle, insulin absorption rate, rapid drop in blood sugar, the body susceptible to dizziness, headaches, shaking, rapid heart beat and other symptoms of low blood sugar, in the absence of timely treatment of cases, low blood sugar can occur in patients with coma and even death.

2. the ampoule of needle-free injection systems for disposable medical supplies, Germany Bayer made of medical grade plastic polymer Makrolon®, adoption of bio-compatibility testing. The purchase of counterfeit products, injection process might produce the following:

1. Pain

2. Injection site edema and hematoma

3. Dust at high pressure injected

4. Chemicals react with ampoule

5. Ampoule in contact with human skin adverse reaction