Betameprodine is an opioid analgesic under international control according to the UN Single Convention 1961. The stereoisomer alphameprodine was more widely used, however, had a similar classification.

Iodide I-131 (as Sodium iodide I-131) is a radioisotopic drug used for the treatment and palliation of thyroid malignancy. Iodine-131 is notable for causing mutation and death in cells that it penetrates, which is due to its mode of beta decay. Iodide I-131 can be detected by gamma cameras for diagnostic imaging, however, it is rarely administered for diagnostic purposes only, imaging will normally be done following a therapeutic dose. Major uses of 131I include the treatment of thyrotoxicosis (hyperthyroidism) due to Graves' disease, and sometimes hyperactive thyroid nodules (abnormally active thyroid tissue that is not malignant). Iodine-131, in higher doses than for thyrotoxicosis, is used for ablation of remnant thyroid tissue following a complete thyroidectomy to treat thyroid cancer. The 131I isotope is also used as a radioactive label for certain radiopharmaceuticals that can be used for therapy, e.g. 131I-metaiodobenzylguanidine for imaging and treating pheochromocytoma and neuroblastoma. Because of the carcinogenicity of its beta radiation in the thyroid in small doses, I-131 is rarely used primarily or solely for diagnosis. Instead, the more purely gamma-emitting radioiodine iodine-123 is used in diagnostic testing. The longer half-lived iodine-125 is also occasionally used when a longer half-life radioiodine is needed for diagnosis, and in brachytherapy treatment, where the low-energy gamma radiation without a beta component makes iodine-125 useful.

Desocriptine is an ergot alkaloid (alpha-dihydro-beta-ergocryptine) derivative. It is a combined alpha- and beta-adrenoceptor antagonist. Desocriptine is antihypertensive and antianginal agent.

Lidadronic acid is the calcium metabolism regulator.

Vinzolidine (also known as LY104208), a semisynthetic vinblastine derivative that was developed as an antitumor agent. Vinzolidine participated in clinical trials phase II in the oral formulation in patients with lymphoma, particularly Hodgkin's disease. In addition, it was studied in patients with Kaposi's sarcoma, non-small cell lung cancer, colorectal cancer, and breast cancer. It was found significant side effects included neurotoxicity and dose-related myelosuppression. As a result, was suggested intravenous route of administration for vinzolidine could be more safely. However, the phase I trial of intravenous vinzolidine was shown no antitumor activity. The further development of this drug was discontinued.

Vinepidine, a derivative of vincristine participated in clinical trials as an antineoplastic agent. As a result, the extreme neuromuscular toxicity was observed, that is why this study was discontinued.

Vinrosidine (leurosidine) is a leurosine-like alkaloid originally isolated from Vinca rosea Linn. Vinrosidine exerts antitumor activity in animal models.

Xorphanol (also known as TR5379M) is a full κ-opioid receptor agonist and is a partial agonist at μ opioid receptor. Clinically, xorphanol was studied as an orally active analgesic that provided effective pain relief but showed low physical dependence liability. Further development of this drug was discontinued.

Glutaurine is formed from the amino group of taurine with the gamma-carboxy group of L-glutamic acid. It was originally discovered in the parathyroid. Evidence has been found suggesting that glutaurine plays a role in peripheral thyroid hormonal regulation. Glutaurine increases triiodothyronine (T3) levels, but does not alter thyroxine (T4) levels. Glutaurine was also shown to prevent electroconvulsive shock-induced amnesia by counteracting the shock effect on the memory consolidation phase. Other roles that have been suggested for glutaurine include roles as a mouse metabolite, a mammalian metabolite, a human metabolite, an anticonvulsant, an anxiolytic drug and a hormone.