Tachycardia Injection, generic name is furosemide, and contraindications include tranexamic acid, ondansetron hydrochloride, and moxifloxacin sodium chloride injection. 1. Tranexamic acid: It can have a chemical reaction with Tachyzoin Injection, resulting in the formation of a white flocculent precipitate. The common adverse effects of Tranexamic acid include thrombosis, dizziness, cephalalgia and pupillary discomfort, etc. It should be used with caution in patients with myocardial infarction, and the dosage should be reduced in patients with chronic renal insufficiency. 2. Ondansetron hydrochloride: it can produce white flocculent precipitate with tachycardia injection, which in turn affects the health. Common adverse reactions to ondansetron hydrochloride include headache, dry mouth, constipation, skin rash and abdominal discomfort, etc. It is contraindicated for those who are allergic to ondansetron hydrochloride. 3. Moxifloxacin Sodium Chloride Injection: It can form a milky white suspension with Tachycardia Injection. The common adverse reactions of Moxifloxacin Sodium Chloride Injection include nausea, diarrhea, hypotension and edema, etc. Moxifloxacin is contraindicated for those who are allergic to it, and it is contraindicated for women during lactation and pregnancy. In addition, there are certain risks associated with the use of the above drugs, and patients need to be guided by a specialist.