Potassium Aminosalicylate is the potassium salt form of aminosalicylic acid, an analog of aminobenzoic acid used to treat tuberculosis. There are two mechanisms responsible for aminosalicylic acid's bacteriostatic action against Mycobacterium tuberculosis. Firstly, aminosalicylic acid inhibits folic acid synthesis (without potentiation with antifolic compounds). The binding of para-aminobenzoic acid to pteridine synthetase acts as the first step in the folic acid synthesis. Aminosalicylic acid binds pteridine synthetase with greater affinity than para-aminobenzoic acid, effectively inhibiting the synthesis of folic acid. As bacteria are unable to use external sources of folic acid, cell growth and multiplication slow. Secondly, aminosalicylic acid may inhibit the synthesis of the cell wall component, mycobactin, thus reducing iron uptake by M. tuberculosis. Specifically, Potassium Aminosalicylate is used to treat active drug-resistant tuberculosis together with other antituberculosis medications. Potassium Aminosalicylate t has also been used as a second line agent to sulfasalazine in people with inflammatory bowel disease such as ulcerative colitis and Crohn's disease.

Chlorbetamide is dichlorobenzene derivative with antimicrobial and amebicidal activity.

Viomycin is a basic peptide antibiotic, which is among the most effective agents against multidrug-resistant tuberculosis. The tuberactinomycins, such as Viomycin, target bacterial ribosomes, binding RNA and disrupting bacterial protein biosynthesis. Specifically, viomycin binds to a site on the ribosome which lies at the interface between helix 44 of the small ribosomal subunit and helix 69 of the large ribosomal subunit. The structures of this complexes suggest that the viomycin inhibits translocation by stabilizing the tRNA in the A site in the pretranslocation state.

Hydroxystilbamidine is an organic antimonal derivative with antiprotazoal, antifungal and anticancer activity. It was used in the treatment of blastomicosis and leishmaniasis. Moreover, hydroxystilbamidine (FluoroGold) is used as a tracer for neurons.

Sulfamethizole is an oral antiobiotic, which was used against urinary tract infections under the name Thiosulfil. Sulfamethizole blocks bacterial growth by inhibiting folic acid synthesis via enzyme called dihydropteroate synthase. The drug is no longer marketed in the USA.

Bithionol is a synthetic sulfanediyl-bis-dichlorphenol), potent photosensitizer with the potential to cause serious skin disorders, formerly marketed as an active ingredient in various topical drug products. Bithionol has antibacterial and anthelmintic properties along with algaecide activity. Bithionol has been shown to be a potent inhibitor of soluble adenylyl cyclase (sAC, Adenylate cyclase type 10 ), an intracellular enzyme important in the catalysis of ATP to cAMP. Bithionol is the first known sAC inhibitor to act through the bicarbonate binding site via a mostly allosteric mechanism. Bithionol is used for treatment of tapeworm infections of dogs, cats, and poultry and for tapeworm and rumen fluke infections of sheep, horses, cattle, and goats.

Acetosulfone (promacetin®) (sodium 4,4′-diaminodiphenylsulfone-2-acetylsulfonamide) is much less toxic sulfone than sulfoxone sodium (diasone®). Acetosulfone is an antibacterial agent. It has been used in the treatment of leprosy, has been under study in the Department of Dermatology at the University of Cincinnati College of Medicine since 1949. Acetosulfone was also used for the treatment of sarcoidosis. It was tested in the treatment of the Duhring's disease.

Sulfisomidine (INN), also known as sulphasomidine (BAN until 2003), is a sulfonamide antibacterial. It’s used in the treatment, control, prevention, and improvement of the following conditions and symptoms: Lower urinary tract infections; Meningococcal meningitis; Streptococcal pharyngitis; Gum infection; Bacillary dysentery.

Diethylcarbamazine is used in humans, dogs and cats for the treatment of parasitic infections, including pulmonary eosinophilia, loiasis, and lymphatic filariasis. The exact mechanism of its action is unknown, however some studies showed the involvment of inducible nitric-oxide synthase and the cyclooxygenase pathway. Although there is no information on whether the drug is marketed in the USA and Europe, it is currently used in India.

Chloramphenicol is a broad-spectrum antibiotic that was first isolated from Streptomyces venezuelae in 1947. The drug was subsequently chemically synthesized. It has both a bacteriostatic and bactericidal effect; in the usual therapeutic concentrations it is bacteriostatic. Chloramphenicol is used for the treatment of serious gram-negative, gram-positive, and anaerobic infections. It is especially useful in the treatment of meningitis, typhoid fever, and cystic fibrosis. It should be reserved for infections for which other drugs are ineffective or contraindicated. Chloramphenicol, a small inhibitor of bacterial protein synthesis, is active against a variety of bacteria and readily enters the CSF. It has been used extensively in the last decades for the treatment of bacterial meningitis. In industrialized countries, chloramphenicol is restricted mostly to topical uses because of the risk of induction of aplastic anemia. However, it remains a valuable reserve antibiotic for patients with allergy to β-lactam antibiotics or with CNS infections caused by multiresistant pathogens.