Doxazosin is used for treating hypertension (high blood pressure) and enlarged prostate. The drug increases the blood flow by expanding the veins and arteries. It also relaxes the muscles of the prostate and the neck of urinary bladder, making it easier to urinate.

Doxycycline is a semi-synthetic antibiotic of a broad spectrum of tetracyclines. Causes bacteriostatic action by suppressing protein synthesis of pathogens as a result of blocking the aminoacyl transport RNA (tRNA) with the "information RNA (rRNA) complex" ribosome.

Dramamine is an antihistamine drug that reduces the effect of the natural chemical histamine in the body. Dramamine is used to treat or prevent the occurrence of nausea, vomiting, and dizziness associated with motion sickness.

Dulcolax - purgative. Causes irritation of the receptor of bowels, exerts direct impact at mucous membrane of intestines, strengthening its peristaltics and increasing secretion of slime in a large intestine. It is effective at hypotonic and colonic inertia for regulation of fecal matter. Sometimes it is taken at preparation for surgeries, instrumental examinationand and radiological researches.

The component of Duphalac is Lactulose. It is used as a means to decrease the content of hydrogen nitride in the blood. It is a disaccharide that is not captivated in the digestive tract. Under the action of microorganisms of the colon, the component is cleaved to form organic acids, together with acetic and lactic acids. The effect of acids on the mucous membrane of the colon increases motility. The number of proteolytic bacteria is reduced with the growth in the number of acidophilic Increasing the acidity of the environment slows down the absorption of NH3 from the intestine. It was found that Duphalac facilitates the circulation of ammonia from the vessels into the cavity of the colon.

Duphaston - gestagenic medicine, makes the selection impact on endometria, promotes formation of a normal secretory endometria at women after preliminary therapy by estrogen. It is taken at the infertility caused by luteal deficiency. It is also effective at treatment of gestagenny insufficiency, endometriosis; secondary amenorrheas; dysfunctional metrorrhagia; premenstrual syndrome.

Duricef - bactericidal drug from cephalosporin antibiotic of the first level. It is prescribed perorally, works through disturbance of synthesis of a cell wall of gram-positive and gram-negative microorganisms.

Dutas is a mix of two medicines: dutasteride and tamsulosin hydrochloride. The drugs have complementary mechanisms of action, due to which there is a rapid weakening of urination. It reduces the risk of retention of the urine. It is not anticipated that the pharmacodynamic reactions of a fixed dosage mix of dutasteride-tamsulosin differ from those obtained with the simultaneous use of dutasteride and tamsulosin as separate elements. Dutasteride inhibits the activity of both the 1st and 2nd type of isoenzymes. DHT is an androgen that is responsible for prostate and the increase of BPH. It inhibits the activity of adrenoreceptors.