Phenylmercuric ammonium acetate is a fungicide and bactericide. It is used for the seed treatment.

Strychnine is an indole alkaloid obtained from the seeds of the Indian tree Strychnos nux-vomica. It gets its scientific name “strychnos” from Carl Linnaeus, who classified it back in 1753, but it was known to the population of India way before then. Nux vomica originates in India. Strychnine-containing baits are currently labelled for below-ground use and are intended for the control of pocket gophers. Their use as indoor pesticides has been eliminated since 1989. In the past, strychnine has been used as a pesticide to control rats, moles, gophers, and coyotes. Strychnine is highly toxic to most domestic animals. Strychnine is a competitive antagonist at glycine receptors and thus a convulsant. It has been used as an analeptic, in the treatment of nonketotic hyperglycinemia and sleep apnea.

Melatonin (5-methoxy N-acetyltryptamine) is a hormone synthesized and released from the pineal gland at night, which acts on specific high affinity G-protein coupled receptors to regulate various aspects of physiology and behaviour, including circadian and seasonal responses, and some retinal, cardiovascular and immunological functions. Melatonin is also made synthetically and available without a prescription as an over-the-counter (OTC) dietary supplement in the U.S. Melatonin supplementation has many uses, however, it has been widely studied for treatment of jet lag and sleep disorders. Parents may consider using melatonin to help their child who has a trouble falling asleep. A medical professional should always evaluate insomnia or other sleeping disorders in children. Additionally, melatonin has been shown to protect against oxidative stress in various, highly divergent experimental systems. There are many reasons for its remarkable protective potential. In mammals, melatonin binds to a number of receptor subtypes including high-affinity (MT1 and MT2) and low-affinity (MT3, nuclear orphan receptors) binding sites, which are distributed throughout the central nervous system and periphery.

Noscapine (also known as Narcotine, Nectodon, Nospen, Anarcotine and (archaic) Opiane) is a benzylisoquinoline alkaloid from plants of the poppy family, without painkilling properties. This agent is primarily used for its antitussive (cough-suppressing) effects. Noscapine is often used as an antitussive medication. A 2012 Dutch guideline, however, does not recommend its use for coughing. Noscapine can increase the effects of centrally sedating substances such as alcohol and hypnotics. Noscapine should not be taken in conjunction with warfarin as the anticoagulant effects of warfarin may be increased. Noscapine, and its synthetic derivatives called noscapinoids, are known to interact with microtubules and inhibit cancer cell proliferation. Mechanisms for its antitussive action are unknown, although animal studies have suggested central nervous system as a site of action. Furthermore, noscapine causes apoptosis in many cell types and has potent antitumor activity against solid murine lymphoid tumors (even when the drug was administered orally) and against human breast and bladder tumors implanted in nude mice. Because noscapine is water-soluble and absorbed after oral administration, its chemotherapeutic potential in human cancer merits thorough evaluation. Antifibrotic effect of noscapine based on novel mechanism, which it shows through EP2 prostaglandin E2 receptor-mediated activation of protein kinase A.

Antipyrine is an analgesic and antipyretic that has been given by mouth and as ear drops. It is often used in testing the effects of other drugs or diseases on drug-metabolizing enzymes in the liver. It inhibits cyclooxygenases and shows little anti-inflammatory activity. Like many old and approved substances after almost 100 years of use, antipyrine has been associated with some serious side effects, namely agranulocytosis and shock reactions.

Sodium 3,4-dimethylphenylglyoxylate is a topical analgesic, sunscreen ingredient, UV-B absorber, FDA approved.

Quinine ascorbate is a salt of antimalarial drug quinine and ascorbic acid (vitamin C). Ascorbate reduces the potency of quinolone-containing anti-malarial drugs. Quinine ascorbate was marketed as a component of over-the-counter smoking deterrent products but was not recognized as safe by the FDA regulation in 1993.

Tribromsalan (trade name Temasept IV) is a member of brominated salicylanilides chemical family. Was initially registered in 1964 manufactured by Hexcel Corporation, Sherwin Williams Chemicals. It is a pesticide type with antimicrobial and preservative features found its application in hard surfaces, laundry, textiles, and manufactured products. Types of tribromsalan formulations include solid, solutions, and sprays and its usual carrier is soap. Limited exposure is possible based on the registered uses of these products as disinfectants, laundry additives, textile preservatives, and manufactured products and do not include direct application to a food or feed crop. In 1974 FDA directed the removal of tribromsalan drug products from the market because it was found to make skin extrasensitive to light. For the same reason it was forbidden in Europe since the 1970s. Since 1982 the OTC topical antimicrobial drug products rulemaking was reopened and included tribromsalan in a list of antimicrobial OTC Drug Products. At present tribromsalan is considered an antiseptic active ingredient eligible for the OTC use as a consumer antiseptic hand and body wash drug product. It was reported that tribromsalan, inhibits NF-kappaB signaling via inhibition of IkappaBalpha phosphorylation with IC50 of 7.9 uM. This finding provides new information on activities and mechanisms of action that may suggest mechanisms of potential novel applications in cancer treatment of such drugs as tribromsalan.

Ginkgolide B belongs to the class of organic compounds known as ginkgolides and bilobalides. These are diterpene lactones with a structure based either on the gingkolide or the bilobalide skeleton. The ginkgolide skeleton is a very rigid structure consisting of hexacyclic C20 trilactone. The cis-fused F/A/D/C ring junction forms an empty semi-ball hole, the D ring contains a cage form tetrahydrofuran ring which occupies the center of the empty hole, and the oxygen atoms of the D,C and F ring and 10-hydroxyl group consist of an analogous crown ether structure. Ginkgolide B is one of the ginkgolides isolated from the leaves of the Ginkgo biloba tree. The Ginkgolide B is the most potent antagonist of platelet activating factor (PAF) and exhibits therapeutic action in a variety of diseases mainly by the PAF receptor. The ginkgolide B possesses a number of beneficial effects such as anti-inflammatory, anti-allergic, antioxidant, and neuroprotective effects. It promotes the proliferation, migration and adhesion of endothelial progenitor cells, and the induction of angiogenesis through vascular endothelial factor (VEGF). Ginkgolide B is considered a valid non-pharmacological (or nutraceutical) approach to the prophylaxis of both migraine with and without aura. Effects of ginkgolide B include reduction of Ca2+-stimulated intracellular events, scavenging of free radicals, modulation of central nervous system glutamatergic transmission and reduction of antiplatelet activating factor (PAF) levels in brain. Ginkgolide B is an active component of EGb, a standardised extract of Ginkgo biloba leaves. Ginkgolide B is one of the major components of EGb-761.

Ligustrazine (tetramethylpyrazine) is a bioactive ingredient extracted from the widely-used Chinese herb, Chuanxiong. It inhibits of platelet aggregation, enhances of vessel dilation, increases cerebral blood flow and possesses neuroprotective properties. The injection solution of ligustrazine has been used especially in China to treat ischemic stroke, coronary heart disease, diabetic nephropathy, and knee osteoarthritis. Ligustrazine was also evaluated in clinical as a remedy for pressure sores, as a salvage agent for patients with non-Hodgkin's lymphoma, as a treatment for bronchial asthma and vertebrobasilar insufficiency.