Doxycycline is antibiotic medicine, tetracycline drugs, treatment for chlamydia mycoplasma infection. Its character is yellow or pale yellow crystalline powder, odor, taste bitter. Easily dissolved in water and methanol,slightly soluble in ethanol or acetone, insoluble in chloroform.

1. Almost the same Antibacterial spectrum with tetracycline and oxytetracycline, 
Doxycycline Hyclate has the stronger inside and outside antibacterial effect than tetracycline.

2. Microorganism has closely cross-resistance with Doxycycline Hyclate, and tetracycline and oxytetracycline. Good oral absorption. 

3. Mainly used on upper respiratory tract infection, tonsillitis, biliary tract infection, lymphadenitis, honeycomb group inflammation, chronic bronchitis caused by sensive Gram-

4. positive bacteria and gram-negative bacilli.

It can be also used to control Typhus, Qiang echinococcosis, mycoplasma pneumonia.
And used to control cholera, and prevent Falciparum malaria and leptospirosis infection.