Domoic acid is one of the best-known marine toxins, causative of important neurotoxic alterations. In the year 1987, domoic acid was responsible for four deaths and the illness of more than 100 people after consuming blue mussels (Mytilus edulis) harvested in the Cardigan Bay of Prince Edward Island, Canada. The symptomatology comprised three kinds of signs: gastrointestinal (nausea, vomiting,), cardiovascular (unstable blood pressure and arrhythmias), and neurological signs (disorientation, confusion, hallucinations, coma, and memory impairment). After this event was discovered the domoic acid epileptic. Nearly a year after the amnesic shellfish poisoning event, an 84 years old male survivor re-experienced severe seizures and was diagnosed with temporal lobe epilepsy caused by domoic acid intoxication. This toxin has a high affinity for the glutamate receptors (GluRs) subtypes: alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and KA receptors. The binding of domoic acid to receptors provokes an increase of calcium (Ca2+) levels, causing the release of Glu to the extracellular space, and the activation of N-methyl-d-aspartate (NMDA) receptors. The histological consequences of these cellular alterations comprise astrocytosis, cytoskeletal disarrangement and, finally, cell death.

Β-boswellic acid (β-BA) is one of the active triterpenoid compounds from the extract of boswellia serrate, known in Indian Ayurvedic system of medicine as Salai guggal. Beta-boswellic acid has been indicated in apoptosis of cancer cells. β-boswellic acid belonds to class of boswellic acids exhibiting anti-inflammatory activities, which are in the phase II clinical trial for study of safety and tolerability in subjects with Relapsing Remitting Multiple Sclerosis.

α-Hexachlorcyclohexane a byproduct of a production of insecticide lindane (γ-hexachlorocyclohexane). α-Hexachlorcyclohexane is a major (60-70%) component of technical grade hexachlorocyclohexane. It is a widespread environment pollutant and cause liver tumors in rats and mice.

Fluticasone Acetate is an impurity in commercial preparations of Fluticasone propionate, a derivative of Flumethasone.