Oxidative Stress: nootropics and compounds | sci-wiki

NACET

NACET is a lipophilic ethyl-ester version of NAC (N-acetylcysteine). The ester makes it far more cell-permeable and orally absorbable than NAC, so more of it reaches tissues, where it is cleaved back to NAC and cysteine and feeds glutathione, the body's main built-in antioxidant.

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Nootropic

J-147

J147 is an experimental neuroprotective compound that grew out of a curcumin-like scaffold, designed at the Salk Institute through phenotypic screens that mimic the aging brain rather than any single Alzheimer's protein. In mice it is potent, orally active, and brain-penetrant: it enhances memory, raises the neurotrophic factors BDNF and NGF, and can rescue cognition even when given late, after pathology is already advanced. Its molecular target was a mystery for years until 2018, when it was identified as the mitochondrial ATP synthase; gently modulating that enzyme flips on the AMPK/mTOR longevity pathway, tying Alzheimer's and ordinary brain aging to a shared mechanism. Crucially, essentially all of this is preclinical; a phase 1 safety study was reportedly initiated but no human efficacy results have been published. Treat J147 as a promising research compound, not a proven drug.

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Modulators

Adrenochrome

Adrenochrome is the striking pink-red oxidation product of adrenaline and one of the most mythologized molecules in all of chemistry. Beyond the folklore, it is a genuinely fascinating catecholamine derivative that sits at the center of research into oxidative stress and cardiovascular biology. Its blend of scientific intrigue and cultural notoriety has made it one of the most talked-about and sought-after research chemicals, prized far more for its mystique and laboratory interest than for any established human use.

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Mitochondrial

ALA

Alpha-lipoic acid (ALA), also called lipoic acid or thioctic acid, is a naturally occurring organosulfur compound that serves as an essential cofactor for several mitochondrial enzymes involved in energy metabolism. It is soluble in both water and fat and is widely marketed as a dietary antioxidant supplement, while in some countries a pharmaceutical form is used to treat the symptoms of diabetic neuropathy.

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Supplement

Cinnamon

Cinnamon is a spice obtained from the dried inner bark of several evergreen trees in the genus Cinnamomum. It has been used since antiquity as a fragrant flavoring and in traditional medicine, and it owes its characteristic aroma largely to the compound cinnamaldehyde. Commercial cinnamon falls into two broad groups, the milder Ceylon or true cinnamon and the more common, stronger cassia, which differ markedly in their content of the compound coumarin.

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Mitochondrial

CoQ10

Coenzyme Q10 (ubiquinone) is a fat-soluble, vitamin-like molecule found in nearly every cell, and it is the only lipid-soluble antioxidant that mammals synthesize for themselves. Within the mitochondria it is the obligatory mobile carrier that shuttles electrons from Complexes I and II to Complex III of the respiratory chain, and it also protects membranes from oxidative damage. It has been studied most in cardiovascular disease, statin-associated muscle symptoms, migraine, and mitochondrial disorders; in the Q-SYMBIO trial, supplementation reduced major cardiovascular events and all-cause mortality in patients with chronic heart failure, and primary CoQ10 deficiency is notable as one of the few mitochondrial disorders treatable by supplementation.

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Supplement

Cranberry

Cranberry (Vaccinium macrocarpon) is a berry extract standardized for its A-type proanthocyanidins (PACs), the polyphenols (plant antioxidant compounds) that stop E. coli bacteria from gripping the bladder wall. Its best-earned job is helping PREVENT recurrent urinary tract infections (UTIs); it is not a cure for an active infection, which still needs antibiotics. Concentrated capsules standardized to around 36 mg PACs are far more reliable than juice, which is dilute and loaded with sugar. On top of the urinary angle, it delivers general antioxidant and polyphenol support.

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Supplement

Dragon Fruit

Dragon fruit (pitaya) is the fruit of several climbing cactus species in the Hylocereus/Selenicereus genus. The red-fleshed types are rich in betalains (betacyanins), the same pigment family that colors beets, alongside soluble and insoluble fiber, some vitamin C, magnesium, and tiny omega-rich seeds. It is eaten mostly as a whole food; its bioactive draw is the betalain antioxidants and the prebiotic fiber, not any single concentrated drug-like compound.

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Flavonoid

EGCG

EGCG (epigallocatechin gallate) is the most abundant and most studied catechin in green tea, a flavonoid polyphenol that accounts for much of the leaf's reputation for health. It is a strong antioxidant and metabolic modulator that shows up in the research on fat oxidation, cardiovascular and metabolic health, inflammation, and longevity. Most of its effects are hormetic (a mild stress the body adapts to), and the honest catch is that isolated high-dose EGCG on an empty stomach carries a rare liver-injury signal, so it is best taken with food.

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Supplement

Hesperidin

Hesperidin is a flavanone glycoside (a plant flavonoid bound to a sugar) that is abundant in citrus fruit, especially the peel and white pith of oranges and lemons; its sugar-free form is called hesperetin. It is best understood as a venous and vascular supplement; it is best known as a partner to diosmin for chronic venous insufficiency (poor return of blood from the legs) and hemorrhoids, with lighter support for antioxidant, anti-inflammatory, and modest metabolic effects on blood sugar and lipids.

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Flavonoid

Isoliquiritigenin

Isoliquiritigenin is a chalcone-type flavonoid from licorice (Glycyrrhiza) with a bright yellow color and a simple trihydroxychalcone backbone. In lab and animal studies it acts as an antioxidant and anti-inflammatory, activating the Nrf2 pathway while dampening NF-kB and the NLRP3 inflammasome, and it inhibits the aromatase enzyme that makes estrogen. Nearly all of the evidence is preclinical; there is no established human dose and human trial data are essentially absent.

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Amino Acid

L-Histidine

L-Histidine is an essential amino acid built around an imidazole ring, which gives it an unusual set of jobs: it is the direct precursor to histamine and (with beta-alanine) to carnosine, it buffers pH near physiological range, and it chelates divalent metals like iron and copper while scavenging singlet oxygen and hydroxyl radicals. It shows up in food protein and is sold as a standalone supplement. Human outcome data is modest but real for skin barrier (atopic dermatitis) and metabolic markers, with most of its antioxidant reputation resting on biochemistry and preclinical work.

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Sleep Support

Melatonin

Melatonin is a hormone best known as the body's circadian signal for darkness, produced by the pineal gland to help govern the sleep-wake cycle; taken as a supplement it can shorten the time to fall asleep and is particularly useful for jet lag and shifted schedules. Less familiar is its other identity: melatonin is synthesized inside the mitochondria of virtually every cell, with under five percent of the body's total coming from the pineal gland, and there it acts as a potent, amphiphilic antioxidant whose own breakdown products are also radical scavengers, giving it a cascade effect. It is thought to be one of the oldest antioxidants in biology, predating its later role as a sleep and circadian signal, and it is generally regarded as safe and non-habit-forming for most adults.

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Senolytic

Quercetin

Quercetin is a plant flavonoid, specifically a flavonol, and one of the most abundant polyphenols in the human diet, found in foods such as onions, apples, capers, berries, and tea. It is a potent antioxidant in laboratory tests and acts as a zinc ionophore, carrying zinc across cell membranes, and it is best known in aging research as one half of the original senolytic combination, dasatinib plus quercetin, which clears senescent cells and has entered first-in-human trials. Oral quercetin is nonetheless poorly absorbed, and it has not been shown in humans to treat or prevent any disease; it is sold as a dietary supplement.

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Nootropic

Rosemary Extract

Rosemary extract is a concentrated preparation of the culinary herb Rosmarinus officinalis (now often classed as Salvia rosmarinus). Its active fraction is dominated by two polyphenols; carnosic acid, a fat-soluble diterpene that activates the body's own antioxidant defenses, and rosmarinic acid, a water-soluble caffeic acid ester. The plant's volatile oil also carries 1,8-cineole, the aromatic component tied to rosemary's cognitive reputation. It's studied mostly for memory support, antioxidant activity, and mild mood effects.

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Peptide

SS-31

SS-31, also known as elamipretide or Bendavia, is a cell-permeable mitochondria-targeting tetrapeptide that concentrates thousands-fold on the inner mitochondrial membrane by binding cardiolipin, the lipid that organizes the cristae and the electron-transport supercomplexes. Rather than acting as a general antioxidant, it restores cristae structure and bioenergetics in mitochondria damaged by ischemia, disease, or aging; in aged mouse muscle a single dose restored ATP production toward youthful levels within about an hour. It has been evaluated in clinical trials for primary mitochondrial diseases, heart failure, and age-related conditions.

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Supplement

Tart Cherry Extract

Tart cherry (Prunus cerasus, usually the Montmorency variety) extract is a whole-fruit polyphenol (a broad class of plant antioxidant compounds) supplement loaded with anthocyanins (the red-purple flavonoid pigments that give the fruit its color) plus a naturally small dose of melatonin (the hormone that signals darkness to your body clock). It reads as a gentle food-derived antioxidant and anti-inflammatory rather than a hard-hitting drug; that mild profile is exactly why people reach for it. The three areas with the most human data are sleep quality, recovery from hard exercise (less soreness, faster return of strength), and lowering uric acid to ease gout. The antioxidant and anti-inflammatory action is the common thread running under all three. It comes as concentrate (a thick juice syrup), powder, or capsules, and potency swings wildly between products; that variability is the single biggest thing to watch.

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Mitochondrial

Deazaflavin

Deazaflavin (5-deazaflavin) is a redox-active analog of the flavin cofactor in which the nitrogen at position 5 of the isoalloxazine ring is replaced by carbon. This substitution shifts its chemistry toward two-electron hydride transfer, giving it distinctive self-redox and cofactor-like behaviour that is exploited in nature (for example as coenzyme F420 in certain microbes) and, in medicinal chemistry, as the parent scaffold for mitochondria-targeted derivatives such as TND1128 [1].

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Neuroprotection

Edaravone

Edaravone (MCI-186) is a small-molecule free-radical scavenger; it mops up reactive oxygen species such as peroxyl and hydroxyl radicals that damage cells under oxidative stress. It is an approved prescription drug for amyotrophic lateral sclerosis (ALS) and, in some countries, for acute ischemic stroke. Its whole point is antioxidant neuroprotection rather than any receptor-level stimulation.

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Nootropic

L-Clausenamide

L-Clausenamide, or (-)-clausenamide, is a pyrrolidinone alkaloid isolated from the leaves of Clausena lansium (wampee) and studied in China as a nootropic and neuroprotective anti-dementia drug candidate [1]. It is the eutomer of the clausenamide enantiomers, improving learning and memory through multi-target actions including modulation of intracellular calcium, cholinergic support, enhancement of synaptic plasticity and long-term potentiation, and antioxidant protection [1]. In cellular and animal models it protects neurons against beta-amyloid, okadaic-acid and ischemic injury and inhibits ferroptosis in dopaminergic neurons [2][3][4].

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