Cefazedone is a semisynthetic first-generation cephalosporin with activity against Gram-positive and Gram-negative bacteria. Cefazedone binds to and inactivates penicillin-binding proteins (PBPs) located on the inner membrane of the bacterial cell wall. PBPs are enzymes involved in the terminal stages of assembling the bacterial cell wall and in reshaping the cell wall during growth and division. Inactivation of PBPs interferes with the cross-linkage of peptidoglycan chains necessary for bacterial cell wall strength and rigidity. This results in the weakening of the bacterial cell wall and causes cell lysis. Unlike other cephalosporins cefazedone possesses good activity against gram-positive bacteria

Ingavirin is pentanedioic acid imidazolyl ethanamide used for the treatment of Influenza and Common Cold in Russia and some other countries. The mechanism of action is implemented at the level of infected cells due to the stimulation of innate immunity factors suppressed by viral proteins. The drug causes an increase in the content of interferon in the blood to the physiological norm, stimulates and normalizes the reduced α-interferon-producing ability of blood leukocytes, stimulates the γ-interferon-producing ability of leukocytes.

Betamipron (BP) is an amino acid derivative that has benzoyl and carboxyl groups in its structure, and it also has very low toxicity in mammals (LD50 in the rat, more than 3,000 mg/kg, i.v.). BP is a renal anionic transport inhibitor and decreases nephrotoxicity caused by high doses of carbapenems, anionic drugs, by inhibiting the drug accumulation in the renal cortex. BP significantly inhibited organic anion uptake by human organic anion transporter 1 (human-OAT1) and human-OAT3 in a dose-dependent manner. Panipenem-betamipron is marketed as Carbenin® (Sankyo Company, Tokyo, Japan).

Fleroxacin is an anti-bacterial agent developed for the treatment of uncomplicated cystitis in women, uncomplicated gonococcal infections, bacterial enteritis, and traveler's diarrea, urinary tract infection, pyelonephritis, skin, soft tissue, bone and joint infections, and lower respiratory tract infections. Fleroxacin acts on bacterials by inhibiting DNA gyrase and topoisomerase IV. Although the current status of the drug in Europe and in the USA is unknown, there is information about its approval and usage in China.

Xibornol [6-(isoborn-2-yl)-3,4 xylenol] is a highly lipophilic and poorly soluble drug used as spray mouthwash for the local treatment of infection and inflammation of the throat and in the dental care, due to both its bacteriostatic activity, mainly against Gram positive micro-organisms and its antiviral properties. The drug concentration required for the therapeutic activity is 3% (w/v). Its poor water solubility makes difficult to set up drug formulations based on aqueous solvents, so xibornol is at present commercially available only as spray aqueous suspension. The self-microemulsifying approach was found to be effective to formulate stable and pharmaceutically acceptable liquid spray formulations of xibornol. The minimal inhibitory concentrations (MIC) and the minimal bactericidal concentrations (MBC) of xibornol against 100 strains of Staphylococcus aureus, clinically isolated have been evaluated in range between 2 ug/ml and 8 ug/ml. In the patients treated with xibornol (500 mg every 8 h for 7 days) any modification in phagocytosis frequency (PMF), phagocytosis index (PHI), nitroblue tetrazolium (NBT), reduction frequency (NRF), microbicidal activity and neutrophil mobility of PML, before, during and after the end of therapy wasn’t found.

Asunaprevir is a direct acting antiviral agent (DAA) against the hepatitis C virus Asunaprevir is an inhibitor of the HCV NS3/4A serine protease complex. This NS3/4A enzyme complex is responsible for processing the HCV polyprotein to yield mature viral proteins required for viral replication. The combination of daclatasvir + asunaprevir [Daklinza(®) + Sunvepra(®)], two direct-acting antiviral agents, has been developed by Bristol-Myers Squibb for the treatment of patients with chronic hepatitis C virus (HCV) genotype 1 infections, including those with compensated cirrhosis.

Midecamycin diacetate (a derivative of Midecamycin) is reported as an ingredient of Miocamycin in Japan. Miocamycin is an orally administered 16-membered macrolide antimicrobial drug. It has a spectrum of in vitro activity similar to that of erythromycin, inhibiting a range of Gram-positive and Gram-negative organisms, atypical microbes and some anaerobes. Importantly, miocamycin demonstrates greater in vitro potency than erythromycin against several pathogens including Legionella pneumophila, Mycoplasma hominis, and Ureaplasma urealyticum. Equally noteworthy is its activity against erythromycin-resistant staphylococcal and streptococcal species expressing inducible-type resistance. Miocamycin possesses poor overall activity against Haemophilus influenzae and is inactive against Enterobacteriaceae. Penetration of miocamycin into body tissues and fluids is both rapid and extensive. The 3 major metabolites of miocamycin possess antimicrobial activity and may contribute to the therapeutic efficacy of the drug. Clinical data indicate that miocamycin is useful in the treatment of upper and lower respiratory tract infections in both adult and paediatric patients. Miocamycin is also effective in the treatment of urogenital tract infections caused by Chlamydia trachomatis or U. urealyticum. Midecamycin binds reversibly to 50S ribosomal subunit causing blockade of transpeptidation/translocation reactions, inhibition of protein synthesis and thus inhibition of cell growth. Midecamycin diacetate is also known as MIOCAMEN, Merced Box of 8 sachets (900mg), Mosil, Myoxam.

Sultamicillin is the mutual prodrug of sulbactam and ampicillin. It is the tosylate salt of the double ester of sulbactam plus ampicillin. Sulbactam is a semisynthetic ß-lactamase inhibitor which, in combination with ampicillin, extends the antibacterial activity of the latter to include some ß-lactamase-producing strains of bacteria that would otherwise be resistant. The combination of sulbactam plus ampicillin for parenteral use has previously been shown to be clinically and bacteriologically effective in a variety of infections. Sultamicillin is marketed under a trade name Unasyn among others.

Solithromycin is a highly potent next-generation macrolide, the first fluoroketolide, which has potent activity against most macrolide-resistant strains. In vitro and in vivo studies have shown potent activity against S. pneumoniae as well as an extended spectrum of activity against CA-MRSA, enterococci, Mycobacterium avium and in animal models of malaria. It is also active against atypical bacteria, such as Legionella, Chlamydophila, Chlamydia, Mycoplasmaand Ureaplasma and against gonococci and other organisms that cause genitourinary tract infections. It is 8-16 times more potent than azithromycin and is active against azithromycin-resistant strains. Its activity against resistant strains is driven by its ability to bind to three sites on the bacterial ribosome, compared to one or two for current macrolides. It binds to the large 50S subunit of the ribosome and inhibits protein biosynthesis. The binding to three ribosomal sites is expected to limit resistance development. On July 2016 Cempra Announces FDA Acceptance of IV and oral formulations of Solithera (solithromycin) New Drug Applications for in the treatment of community-acquired bacterial pneumonia.

Midecamycin (Acetate) is a macrolide antibiotic with actions and uses similar to those of erythromycin but somewhat less active. It is synthesized from Streptomyces mycarofaciens. It has been given by mouth to treat variety of bacterial infections like respiratory tract, ear, skin infections etc. Antibiotics require constant drug level in body for therapeutic effect. This is achieved by taking the drug at regular interval of time throughout the day and night as prescribed. Midecamycin (Acetate) is primarily indicated in conditions like Bronchitis, Laryngopharyngitis, Otitis media, Periodontitis, Pneumonia, Respiratory tract infections, Skin infections, Subcutaneous abscess, Tonsillitis. Midecamycin inhibits bacterial growth by targeting the 50S ribosomal subunit preventing peptide bond formation and translocation during protein synthesis. Resistance to midecamycin is commonly attributed to mutations in 50S rRNA preventing midecamycin binding allowing the cell to synthesize proteins free of error.