Cholic acid is a primary bile acid synthesized from cholesterol in the liver. Endogenous bile acids including cholic acid enhance bile flow and provide the physiologic feedback inhibition of bile acid synthesis. The mechanism of action of cholic acid has not been fully established; however, it is known that cholic acid and its conjugates are endogenous ligands of the nuclear receptor, farnesoid X receptor (FXR). FXR regulates enzymes and transporters that are involved in bile acid synthesis and in the enterohepatic circulation to maintain bile acid homeostasis under normal physiologic conditions. U.S. Food and Drug Administration approved Cholbam (cholic acid) capsules, the first FDA approved treatment for pediatric and adult patients with bile acid synthesis disorders due to single enzyme defects, and for patients with peroxisomal disorders (including Zellweger spectrum disorders).

Miltefosine is an anti-leishmanial agent. It is an alkyl phospholipids compound, was originally intended for breast cancer and other solid tumors. However, it could not be developed as an oral agent because of dose-limiting gastro-intestinal toxicity, and only a topical formulation is approved for skin metastasis. But Miltefosine showed excellent antileishmanial activity both in vitro and in experimental models. Miltefosine is effective in vitro against both promastigotes and amastigotes of various species of Leishmania and also other kinetoplastidae (Trypanosoma cruzi,T. brucei) and other protozoan parasites (Entamoeba histolytica, Acanthamoeba). Mechanism of action is unknown. It is likely to involve interaction with lipids (phospholipids and sterols), including membrane lipids, inhibition of cytochrome c oxidase (mitochondrial function), and apoptosis-like cell death. Miltefosine is approved for the treatment of Visceral leishmaniasis (due to Leishmania donovani), Cutaneous leishmaniasis (due to Leishmania braziliensis, Leishmania guyanensis, and Leishmania panamensis) and Mucosal leishmaniasis (due to Leishmania braziliensis).

Tedizolid (also known as TR-700, DA-7157) as is an active compound, which is produced by plasma or intestinal phosphatases, after administration of the drug, tedizolid phosphate either orally or intravenously. The mechanism of action of tedizolid occurs through inhibition of bacterial protein synthesis by binding to the 23S ribosomal RNA of the 50S subunit, thereby preventing the formation of the 70S initiation complex and inhibiting protein synthesis.

Efinaconazole is triazole used as a 10% topical solution for the treatment of onychomycosis, a fungal infection of the nails. It was approved for use in Canada and the USA in 2014 and is marketed by Valeant Pharmaceuticals North America LLC under the name Jublia. Like other antifungal triazoles, efinaconazole inhibits the fungal cytochrome P450 enzyme lanosterol 14α demethylase (CYP51), thereby disrupting ergosterol synthesis and, consequently, membrane integrity and growth in fungi. CYP51 is evolutionarily conserved and, in mammals, mediates conversion of lanosterol to meiosis-activating sterols (MAS); MAS are intermediates in the biosynthesis of cholesterol and may have a signaling role in initiating meiosis and oocyte maturation. Azoles have higher affinity for fungal CYP51 compared to the mammalian enzyme and such selectivity contributes to the safety of this therapeutic class. Azoles have been reported to produce reproductive and developmental toxicity in both humans and laboratory animals. The mechanism is unknown but inhibition of mammalian CYP51 as well as other CYPs, e.g. CYP17, CYP19 and CYP26, have been postulated to play a role.

Ledipasvir is an inhibitor of the Hepatitis C Virus (HCV) NS5A protein required for viral RNA replication and assembly of HCV virions. Approved in October 2014 by the FDA, ledipasvir and sofosbuvir (tradename Harvoni) are direct-acting antiviral agents indicated for the treatment of HCV genotype 1 with or without cirrhosis.

Dehydroepiandrosterone (INTRAROSA™, prasterone) is a major C19 steroid produced from cholesterol by the adrenal cortex. It is also produced in small quantities in the testis and the ovary. Dehydroepiandrosterone (INTRAROSA, prasterone) is structurally similar to, and is a precursor of, androstenedione, testosterone, estradiol, estrone and estrogen. It indicated for the treatment of moderate to severe dyspareunia, a symptom of vulvar and vaginal atrophy, due to menopause. The mechanism of action of dehydroepiandrosterone (INTRAROSA, prasterone) in postmenopausal women with vulvar and vaginal atrophy is not fully established.

Ceritinib is a selective inhibitor of ALK1, a target found in metastatic non-small cell lung cancer (NSCLC). Ceritinib is approved by FDA and is indicated for the treatment of anaplastic lymphoma kinase (ALK)-positive metastatic non-small cell lung cancer. Ceritinib also targets insulin-like growth factor 1 receptor (IGF-1R), insulin receptor (InsR), and ROS1.

MOVANTIK (naloxegol) is a peripherally-acting mu-opioid receptor antagonist indicated for the treatment of opioid-induced constipation (OIC) in adult patients with chronic noncancer pain. It is being investigated for the treatment of constipation as a side effect of prescription opioid pain medicines.

Idelalisib is a first-in-class selective inhibitor of adenosine-5'-triphosphate (ATP) binding to PI3Kdelta kinase, resulting in inhibition of the P13K signalling pathway in malignant B cells. The compound is approved for the treatment of several types of blood cancer. Idelalisib is intended to be used in combination with rituximab as second or subsequent line therapy for the treatment of chronic lymphocytic leukaemia. The drug may cause fatal and/or severe diarrhea or colitis, hepatotoxicity, pneumonitis and intestinal perforation.

Ceftolozane is a novel a cephalosporin-class antibacterial drug. In combination with a beta-lactamase inhibitor tazobactam (ZERBAXA, ceftolozane/tazobactam ) ceftolozane, is currently indicated for the treatment of the adult patients with complicated intra-abdominal infections caused by designated Gram-negative and Gram-positive microorganisms and complicated urinary tract infections caused by certain Gram-negative bacteria, including those caused by multi-drug resistant Pseudomonas aeruginosa. To reduce the development of drug-resistant bacteria and maintain the effectiveness of ZERBAXA and other antibacterial drugs, ZERBAXA should be used only to treat infections that are proven or strongly suspected to be caused by susceptible bacteria. Safety and effectiveness in pediatric patients have not been established.