Rubidium chloride is an inorganic compound with the formula RbCl. It appears to be nontoxic and therapeutically effective in several types of depressive disorders. This drug develops his action on dopaminergic stimulation reducing the depressive pattern. Also radioactive rubidium-82 chloride is used as diagnostic agent in positron emission tomography (PET).

Cytisine ( aka baptitoxine and sophorine) is a naturally occurring alkaloid that can be found in several plant genera, such as Laburnum and Cytisus of the family Fabaceae. It has been found to be clinically superior to nicotine replacement therapy for the cessation of smoking. It is available in Eastern Europe under the brand names Tabex and Desmoxan and in Canada under the brand name Cravv. However certain undesirable side effects exist, Cytisine can interfere with breathing and cause death (LD50 i.v., in mice, is about 2 mg/kg) and Cytisine is also teratogenic. Cytosine is an α4β2 nicotinic Acetylcholine receptor agonist. In addition to clinical use as a smoking cessation aid, It has demonstrated anti-depressant effects in mice.

Cordycepin, or 3'-deoxyadenosine, is a derivative of the nucleoside adenosine, differing from the latter by the absence of the hydroxy group in the 3' position of its ribose part. Cytostatic effect of cordycepin is due to incorporation of phospho-cordycepin into mRNA and inhibition of mRNA synthesis. Cordycepin exhibit rapid antidepressant effect due to potentiation of AMPA receptors

Sarcosine, also known as N-methylglycine, is a metabolite of glycine. It shares properties with both glycine and D-serine, though its effects are weaker. Sarcosine supplementation can be used to alleviate symptoms of depression and schizophrenia, or improve cognition. It is absorbed more reliably by the body than D-serine, which can also treat similar conditions. Sarcosine is being investigated for its connection to prostate cancer. It may be a biomarker for prostate cancer, which means that if sarcosine levels in the blood are higher than normal, it could be an indicator of prostate cancer. This doesn’t mean that sarcosine itself causes cancer. More research is needed to confirm this relationship. Sarcosine’s main mechanism involves inhibiting a transporter, called GlyT1, which takes up glycine and D-serine into cells. This increases the levels of glycine and D-serine in the body and increases their effects. Sarcosine, a glycine transporter type 1 inhibitor and an N-methyl-D-aspartate (NMDA) receptor co-agonist at the glycine binding site, potentiates NMDA receptor function. Sarcosine is an inhibitory glycine receptor agonist.

Parabens are widely used preservatives in basic necessities such as cosmetic and pharmaceutical products. It was found, that butylparaben has estrogenic and antiandrogenic properties and is known to reduce sperm counts in rats following perinatal exposure. In addition was observed, that butylparaben exerted endocrine disrupting effects on both male and female offspring. In 2009-2010, 80 pregnant women from Ottawa Canada participated in the Plastics and Personal-Care Product Use in Pregnancy (P4) Study. Women kept a diary of products that they used 24 h prior to and during the collection. All parabens measured in maternal urine had moderate to high reproducibility. Women who used lotions in the past 24 h had significantly higher geometric mean paraben concentrations (80-110%) in their urine than women who reported no use in the past 24 h. Women who used shampoo, conditioner, and cosmetics also showed 70-80% higher butylparaben concentrations in their urine.

Oxazolam is a prodrug (precursor) for the benzodiazepine desmethyl-diazepam (nordazepam) and is itself a metabolic product of other benzodiazepines. It has anxiolytic, sedative, and anticonvulsant properties. It is a GABA-A receptor agonist. Oxazolam is marketed in Japan under the brand name Serenal. It is usually used to treat anxiety, tension, depression, and sleeping disorder in neurosis. It is used to treat somatic symptoms in psychosomatic disorders (gastrointestinal diseases, circulatory diseases, endocrine diseases, and autonomic dystonia), anxiety, tension, and depression. It is also used as a preanesthetic medication.

Bifemelane is a psychotropic drug, was found to inhibit monoamine oxidase (MAO). It inhibited type A MAO (MAO-A) competitively and type B (MAO-B) noncompetitively and it was a more potent inhibitor of MAO-A than of MAO-B. Bifemelane is an antidepressant and cerebral activator that is used in Japan for the treatment of cerebral infarction patients with depressive symptoms, and in the treatment of senile dementia as well. It also appears to be useful in the treatment of glaucoma.

Lofepramine is a tricyclic antidepressant that is structurally similar to imipramine and is extensively metabolised to desipramine. In the absence of other major pharmacological effects it appears that its antidepressant activity stems from the facilitation of noradrenergic neurotransmission by uptake inhibition, and possibly by the additional facilitation of serotoninergic neurotransmission. The overall therapeutic efficacy of lofepramine is comparable to that of imipramine, amitriptyline, clomipramine, maprotiline and mianserin in patients with depression of varying severity, and coexisting anxiety. Lofepramine is a strong inhibitor of norepinephrine reuptake (Ki=5.4 nM) and a moderate inhibitor of serotonin reuptake (Ki=70 nM). It is a weak-intermediate level antagonist of the muscarinic acetylcholine receptors.Lofepramine is licensed for the treatment of depression in the United Kingdom.

Pipofezine (Azafen or Azaphen) is a tricyclic antidepressant (TCA) approved in Russia for the treatment of depression. It was introduced in the late 1960s and is still used today. Pipofezine has been shown to act as a potent inhibitor of the reuptake of serotonin. In addition to its antidepressant action, pipofezine has sedative effects as well, suggesting antihistamine activity. Other properties such as anticholinergic or antiadrenergic actions are less clear but are likely. The main advantage of Azafen compared with other tricyclic antidepressants is that this drug has a low toxic effect on the body, including the heart, and it does not block cholinergic receptors and does not change the activity of monoamine oxidase. The maximum concentration in the blood is reached after 1-2 hours after taking the drug. Absorbed in the gastrointestinal tract, metabolism occurs in the liver, and is excreted by Azaphene kidneys.