Zoloft is an antidepresant stopping the reuptake of serotonin, which is performed by the neurons that isolated it. As a result, the concentration of the neurotransmitter increases in the synaptic cleft and the main cause of depressive states, the serotonin deficiency, is eliminated.

Bactrim - a combined drug, containing two active ingredients: sulfanamide drug sulfamethoxazole and derivative of diaminopyrimidine - trimethoprimum. Colibacillus life activity oppresses that leads to reduction of synthesis of thymine, riboflavinum, niacin, etc. group B vitamins in intestines. Duration of therapeutic effect makes 7 years.

Septra - Sulfamethoxazole is an antibiotic that treats various types of infections caused by bacteria. The combination of sulfamethoxazole and trimethoprim is used to treat ear infection, urinary tract infection, prostate infection, bronchitis, travelers' diarrhea and pneumocystis pneumonia. The drug is available in the form of tablets, as well as in liquid form.