Isometheptene (usually as isometheptene mucate) is a sympathomimetic amine sometimes used in the treatment of migraines and tension headaches due to its vasoconstricting properties. Isometheptene's vasoconstricting properties arise through activation of the sympathetic nervous system via epinephrine and norepinephrine. These compounds elicit smooth muscle activation leading to vasoconstriction by interacting with cell surface adrenergic receptors.

Chlorothen citrate (trade name Tagathen) is an antihistamine and a first generation H1 receptor antagonist, that have been used for the treatment of asthma, bronchitis, and bronchoconstriction.‘-5. Chlorothen is synthesized by condensation of 5-chloro-2-thienylchloride and N,N-dimethyl-N-(2-pyridinyl)ethylenediamine in the presence of sodium or potassium amide

Antazoline is an antagonist of histamine H1 receptors. It selectively bind to but does not activate histamine H1 receptors, thereby blocking the actions of endogenous histamine, which subsequently leads to temporary relief of the negative symptoms brought on by histamine. Antazoline in combination with naphazoline (VASOCON-A®) is indicated to relieve the symptoms of allergic conjunctivitis.

Methestrol is a nonsteroidal synthetic estrogen that has never been marketed.

Mephenytoin is an antiepileptic drug which can be useful in the treatment of epilepsy. The primary site of action appears to be the motor cortex where spread of seizure activity is inhibited. Possibly by promoting sodium efflux from neurons, mephenytoin tends to stabilize the threshold against hyperexcitability caused by excessive stimulation or environmental changes capable of reducing membrane sodium gradient. This includes the reduction of posttetanic potentiation at synapses. Loss of posttetanic potentiation prevents cortical seizure foci from detonating adjacent cortical areas. Mephenytoin reduces the maximal activity of brain stem centers responsible for the tonic phase of tonic-clonic (grand mal) seizures. The mechanism of action of mephenytoin is not definitely known, but extensive research strongly suggests that its main mechanism is to block frequency-, use- and voltage-dependent neuronal sodium channels, and therefore limit repetitive firing of action potentials. Mephenytoin is no longer available in the US or the UK. It is still studied largely because of its interesting hydroxylation polymorphism.

Octodrine is a stimulant that is structurally similar to amphetamine and is included in several so-called “pre-workout” and “fat-burning” supplements. Octodrine, has a history of use as a pharmaceutical drug. It was originally developed in the United States as an aerosolized treatment for bronchitis, laryngitis and other conditions Initially approved by the FDA in 1946 as Eskay’s Oralator, this inhaler appeared only in the 1949 edition of the Physicians’ Desk Reference. Octodrine was combined with several other medications, including theophylline, 3-octopamine, and adenosine, in multi-ingredient tablets sold between the early 1960s through the mid-2000s under the trade names Ambredin, Ordinal, Ordinal Retard and Ordinal Forte. Some proponents say octodrine is a safer alternative to other stimulants like ephedra and Dimethylamylamine (DMAA), but there is no scientific information to support this claim. Originally developed in the early 1950’s as a remedy to nasal congestion and as a possible anti-tumor drug, Octodrine has resurfaced as a key ingredient in dietary supplements for its stimulant and thermogenic benefits.

Octodrine is a stimulant that is structurally similar to amphetamine and is included in several so-called “pre-workout” and “fat-burning” supplements. Octodrine, has a history of use as a pharmaceutical drug. It was originally developed in the United States as an aerosolized treatment for bronchitis, laryngitis and other conditions Initially approved by the FDA in 1946 as Eskay’s Oralator, this inhaler appeared only in the 1949 edition of the Physicians’ Desk Reference. Octodrine was combined with several other medications, including theophylline, 3-octopamine, and adenosine, in multi-ingredient tablets sold between the early 1960s through the mid-2000s under the trade names Ambredin, Ordinal, Ordinal Retard and Ordinal Forte. Some proponents say octodrine is a safer alternative to other stimulants like ephedra and Dimethylamylamine (DMAA), but there is no scientific information to support this claim. Originally developed in the early 1950’s as a remedy to nasal congestion and as a possible anti-tumor drug, Octodrine has resurfaced as a key ingredient in dietary supplements for its stimulant and thermogenic benefits.

Octodrine is a stimulant that is structurally similar to amphetamine and is included in several so-called “pre-workout” and “fat-burning” supplements. Octodrine, has a history of use as a pharmaceutical drug. It was originally developed in the United States as an aerosolized treatment for bronchitis, laryngitis and other conditions Initially approved by the FDA in 1946 as Eskay’s Oralator, this inhaler appeared only in the 1949 edition of the Physicians’ Desk Reference. Octodrine was combined with several other medications, including theophylline, 3-octopamine, and adenosine, in multi-ingredient tablets sold between the early 1960s through the mid-2000s under the trade names Ambredin, Ordinal, Ordinal Retard and Ordinal Forte. Some proponents say octodrine is a safer alternative to other stimulants like ephedra and Dimethylamylamine (DMAA), but there is no scientific information to support this claim. Originally developed in the early 1950’s as a remedy to nasal congestion and as a possible anti-tumor drug, Octodrine has resurfaced as a key ingredient in dietary supplements for its stimulant and thermogenic benefits.

Tuaminoheptane (or 2-aminoheptane), a nasal decongestant that is on the list of prohibited substances published by the World Anti-Doping Agency due to its stimulating properties. Tuaminoheptane is a stimulant of the sympathetic nervous system, similarly to several other known drugs targeting norepinephrine transporter