The generic name of Yunker Injection is technetium [99Tc] methylenediphosphonate injection. This medication is used to treat diseases such as rheumatoid arthritis. Side effects such as possible rash may occur after using the drug. Technetium [99Tc] Methylene Diphosphonate Injection has certain anti-inflammatory, analgesic, immunomodulatory, and bone-breaking repair properties, which can be used to treat rheumatoid arthritis and other rheumatoid immune diseases. The drug needs to be administered intravenously. Systemic adverse reaction symptoms such as skin rash, poor appetite, fatigue, menstrual cramps, etc. may occur after administration, and adverse reactions such as redness, swelling, phlebitis, etc. may occur at the injection site. The occurrence of the above adverse reactions, it is recommended to immediately stop the continued administration of the drug, and symptomatic treatment. The drug is contraindicated in allergic individuals, hypotension or unstable hemodynamic monitoring, severe hepatic and renal insufficiency, drug hypersensitivity, pregnancy. Caution is advised in the use of the drug in cardiac insufficiency. Technetium [99Tc] Methylene Diphosphonate Injection should be administered under the supervision of a clinician.