Algesic substance

Capsaicin
Catalog No: CFN99917

Capsaicin, the main pungent ingredient in 'hot' chilli peppers, is a TRPV1 agonist with EC50 of 0.29±0.05 μM in HEK293 cells, which elicits a sensation of burning pain by selectively activating sensory neurons that convey information about noxious stimuli to the central nervous system, it may used as a pain therapy by the long-lasting and inhibitory effects on persistent pain. Capsaicin has antioxidant activity , it is more effective than melatonin in suppressing the formation of lipid hydroperoxides, it also reduces anxiety-like behaviours in rats and may be an admissible drug candidate for treating endometriosis.
Histamine
Catalog No: CFN90029

Histamine, an organic nitrogenous compound, is involved in local immune responses regulating physiological function in the gut and acting as a neurotransmitter for the brain, spinal cord, and uterus. It is a potent H1 and H2 receptor agonist. Histamine increases Nav1.8 expression in primary afferent neurons via H2 receptor-mediated pathway and thereby contributes to neuropathic pain, H2 receptor antagonists may potentially be used as analgesics for patients with neuropathic pain.
Tartaric acid
Catalog No: CFN93181

Tartaric acid, oxalic acid and histamine are the well-recognized pain-inducing agents in the stinging hairs of U. thunbergiana.