Pain: nootropics and compounds | sci-wiki

Taltirelin

Taltirelin (TA-0910, brand name Ceredist) is a synthetic, metabolically stable analog of thyrotropin-releasing hormone (TRH), the three-residue hypothalamic peptide. It was developed by Tanabe Seiyaku and approved in Japan in 2000 for spinocerebellar degeneration, where it is taken orally to help with ataxia and related symptoms. The interesting thing about taltirelin is that it was engineered to keep the central nervous system effects of TRH while shedding most of the hormonal ones; it is roughly 10 to 100 times more potent than native TRH at driving CNS arousal, yet its effect on thyroid hormone release is much weaker. It also lasts far longer in the body because it resists the enzymes that chew up natural TRH within minutes. Outside its approved use it gets discussed in nootropic and biohacker circles as a wakefulness-promoting, pro-cholinergic "analeptic" and neuroprotective agent, and there is a real preclinical literature behind those claims (Parkinson's models, ischemia, pain, respiratory stimulation). Human data outside spinocerebellar degeneration is thin, so most of what you read about it as a cognitive enhancer is extrapolation from animal work.

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Peptide

Dermorphin

Dermorphin is a naturally occurring opioid peptide, a chain of seven amino acids first isolated from the skin of South American frogs of the genus Phyllomedusa. It is among the most potent and selective mu-opioid agonists known, reported to be many times stronger than morphine, and it is one of very few peptides made by a vertebrate to contain a D-amino acid, a D-alanine residue installed by post-translational epimerization that is essential to its potency and its resistance to protease breakdown. Dermorphin is not an approved medicine; it is used in research and is known for its illicit use as a doping agent in horse racing.

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Supplement

MSM

MSM (methylsulfonylmethane), also known as dimethyl sulfone, is a naturally occurring organosulfur compound and oxidation product of dimethyl sulfoxide that is present in trace amounts in many foods and is widely sold as a dietary supplement. Its reported anti-inflammatory and antioxidant actions are attributed to suppression of NF-kB signaling and downstream pro-inflammatory mediators, together with scavenging of reactive oxygen species and support of endogenous antioxidant capacity. Several randomized controlled trials in knee osteoarthritis report modest improvements in pain and physical function, and the compound is generally recognized as safe and well tolerated at doses of up to several grams daily. Preclinical studies have additionally examined effects on exercise-related oxidative stress, allergic inflammation and cancer-cell biology, including induction of apoptosis and sensitization of tumor cells to chemotherapy, though the overall clinical evidence base remains limited.

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Analgesic

Tetrahydropalmatine

L-THP (levo-tetrahydropalmatine) is a plant alkaloid from Corydalis and related herbs with a long history in traditional Chinese medicine for its calming, sedative, and pain-relieving properties. Modern research has clarified its mechanism as a dopamine receptor modulator, and it has been carried all the way into a human clinical study for cocaine use disorder, an unusually strong evidence base for a botanical compound. For those exploring natural approaches to relaxation, sleep, and discomfort, L-THP is a genuinely well-studied and intriguing choice.

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Antidepressant

Amitriptyline

Amitriptyline is a tricyclic antidepressant introduced in the early 1960s, originally for major depression and now used at least as often for chronic pain conditions. It relieves symptoms by increasing the availability of the neurotransmitters serotonin and norepinephrine, while also blocking histamine, acetylcholine, and adrenergic receptors, which accounts for both its sedating quality and many of its side effects [1]. Common uses today include neuropathic pain, fibromyalgia, and the prevention of migraine and tension headaches, in addition to depression [3][4].

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NSAID

Celecoxib

Celecoxib is a nonsteroidal anti-inflammatory drug (NSAID) that selectively targets the cyclooxygenase-2 enzyme, used mainly to relieve pain and inflammation in arthritis and related conditions [1][2]. By focusing on COX-2 while largely sparing COX-1, it aims to ease inflammation with a lower risk of stomach ulcers than older, nonselective NSAIDs [2]. Discovered at Searle and approved in the United States in 1998, it is sold under the brand name Celebrex and is now widely available as a generic [1]. Like other NSAIDs it carries cardiovascular and other risks that shape how it is prescribed [1][3].

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Antidepressant

Duloxetine

Duloxetine is a balanced serotonin-norepinephrine reuptake inhibitor, marketed chiefly as Cymbalta since 2004, approved for major depression and generalized anxiety as well as several chronic pain conditions. Its analgesic action reflects potentiation of descending serotonergic and noradrenergic pathways that dampen pain signaling in the spinal cord, an effect largely separate from its antidepressant activity. Randomized trials support its use in diabetic peripheral neuropathic pain, fibromyalgia, and chronic musculoskeletal pain from osteoarthritis and low back pain, and it is the agent with the strongest randomized evidence recommended by oncology guidelines for chemotherapy-induced peripheral neuropathy. Through the same monoaminergic facilitation of pudendal motor neurons in Onuf's nucleus, duloxetine strengthens urethral sphincter tone and is used in some countries for stress urinary incontinence. It is a prescription-only medicine, available generically, and appears on the World Health Organization list of essential medicines.

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NSAID

Ibuprofen

Ibuprofen is a propionic acid nonsteroidal anti-inflammatory drug that relieves pain, fever, and inflammation by reversibly and competitively inhibiting both cyclooxygenase isoforms, COX-1 and COX-2, thereby reducing synthesis of prostaglandins from arachidonic acid. Marketed as a racemate, it undergoes a distinctive unidirectional metabolic inversion in which the inactive R-enantiomer is converted in vivo to the pharmacologically active S-form. Because it competes for the same catalytic site as aspirin on platelet COX-1, ibuprofen can transiently blunt aspirin's irreversible antiplatelet effect, a clinically relevant interaction in patients taking low-dose aspirin for cardioprotection. Large randomized evidence from the PRECISION trial found ibuprofen non-inferior in cardiovascular safety to naproxen and celecoxib, though with comparatively higher gastrointestinal and renal event rates; it remains one of the most widely used over-the-counter medicines worldwide.

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NSAID

Indomethacin

Indomethacin, also spelled indometacin, is a potent nonsteroidal anti-inflammatory drug (NSAID) of the indole acetic acid class, used to relieve pain, fever, and inflammation. It is a mainstay for acute gout, ankylosing spondylitis, and other inflammatory arthritis, and it also has specialized roles in closing a patent ductus arteriosus in premature infants and in a distinctive group of indomethacin-responsive headaches. First introduced in the 1960s, it is considered one of the stronger NSAIDs and appears on the World Health Organization list of essential medicines.

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NSAID

Ketorolac

Ketorolac is a nonsteroidal anti-inflammatory drug (NSAID) noted for unusually strong analgesic activity, used for the short-term management of moderate to severe pain. Chemically a pyrrolizine carboxylic acid derivative, it is often given by injection after surgery, where it can relieve pain comparably to opioids such as morphine while sparing opioid use [1]. Because of a heightened risk of gastrointestinal, kidney, and bleeding complications, its use is deliberately limited to short courses [1].

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Analgesic

Paracetamol

Paracetamol, known as acetaminophen in the United States, is one of the most widely used pain and fever medicines in the world, relieving mild to moderate pain with little of the stomach irritation seen with nonsteroidal anti-inflammatory drugs. Remarkably, after more than a century its exact mechanism is still debated; a leading explanation is that in the brain it is converted to a metabolite, AM404, that acts on the endocannabinoid and TRPV1 systems and inhibits central prostaglandin synthesis, and AM404 has been detected in human cerebrospinal fluid after a normal dose. Very safe at recommended doses, it can cause severe liver injury in overdose and is a leading cause of acute liver failure; a widely discussed concern about prenatal use and child neurodevelopment was substantially weakened by a large sibling-controlled study pointing to familial confounding rather than causation.

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Dissociative

2-Fluorodeschloroketamine

2-Fluorodeschloroketamine (2-FDCK, 2F-DCK) is an arylcyclohexylamine dissociative and a fluorinated analog of ketamine in which the aromatic chlorine is replaced by fluorine, and it is presumed to share ketamine's mechanism as an N-methyl-D-aspartate (NMDA) receptor antagonist. It has circulated widely as an inexpensive research chemical producing a broadly ketamine-like dissociative state, and its extensive metabolism has been mapped in human liver microsomes, urine, and hair, with nor-2F-DCK identified as a principal metabolite. Addictovigilance surveillance has linked ketamine analogues including 2-FDCK to serious neurological and psychiatric events and to recorded deaths, and case reports describe emergency presentations in a dissociated state after insufflation. Like other arylcyclohexylamines, it carries risks of compulsive redosing and, with chronic use, urinary tract and bladder toxicity.

Pain

Taltirelin

Dermorphin

MSM

Tetrahydropalmatine

Amitriptyline

Celecoxib

Duloxetine

Ibuprofen

Indomethacin

Ketorolac

Paracetamol

2-Fluorodeschloroketamine

Alphadolone

BIA 10-2474

CP-55,940

Deschloroketamine

Devil's Claw

Dimiracetam

Dronabinol

Esketamine

Flurbiprofen

Ketamine

Kratom

LIT-001

Matrine

Menthol

Methoxetamine

Nabilone

Neurotrophin-3

Norketamine

OL-135

Parthenolide

Peppermint Oil

PF-3845

Serrapeptase

URB597

Morphine

Codeine

Oxycodone

Hydrocodone

Fentanyl

Tramadol

Heroin

Buprenorphine

Methadone

Pain

Taltirelin

Dermorphin

MSM

Tetrahydropalmatine

Amitriptyline

Celecoxib

Duloxetine

Ibuprofen

Indomethacin

Ketorolac

Paracetamol

2-Fluorodeschloroketamine

Alphadolone

BIA 10-2474

CP-55,940

Deschloroketamine

Devil's Claw

Dimiracetam

Dronabinol

Esketamine

Flurbiprofen

Ketamine

Kratom

LIT-001

Matrine

Menthol

Methoxetamine

Nabilone

Neurotrophin-3

Norketamine

OL-135

Parthenolide

Peppermint Oil