Doxycycline Hyclate 100 mg Injection Single-Dose Vials x 5/Box (RX)Doxycycline Hyclate 100 mg Injection (Single Dose Vial) Doxycycline Hyclate 100 mg Injection is an antibiotic that belongs to the tetracycline class of medications. It is the injectable form of doxycycline, often used when oral administration is not possible or appropriate. Doxycycline is a broad spectrum tetracycline antibiotic with bacteriostatic action (it inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit). The injection