Sabroxy (Oroxylin A) vs PE-22-28
Side-by-side comparison of Sabroxy (Oroxylin A) and PE-22-28: mechanism, half-life, dose range, safety profile, and vendor pricing.
Price snapshot
Sabroxy (Oroxylin A)
PE-22-28
Sabroxy (Oroxylin A)
Sabroxy is a standardized Oroxylum indicum (Indian trumpet tree) bark extract - typically 10% oroxylin A - sold as a nootropic supplement ingredient. Preclinical work points to dopaminergic (dopamine-reuptake-inhibiting)…
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Full Sabroxy (Oroxylin A) profilePE-22-28
PE-22-28 is a synthetic seven-amino-acid peptide (sequence PAGASRLLLLTGEIDLP derivative, commonly truncated to PE-22-28 as shorthand for "position 22-28" within the parent humanin-family sequence) that was designed as an…
Lowest listed price: $54.99 across 1 listing
Full PE-22-28 profileSide-by-side comparison
| Attribute | Sabroxy (Oroxylin A) | PE-22-28 |
|---|---|---|
| Category | Nootropics | Nootropics |
| Research Stage | Preclinical, with one supporting human RCT | Preclinical |
| Mechanism of Action | Sabroxy is a standardized whole-plant extract of Oroxylum indicum (Indian trumpet tree) bark, typically standardized to 10% oroxylin A, and also containing related flavones such as baicalein and chrysin. Because it is a multi-constituent botanical rather than… | PE-22-28 is a synthetic 7-amino-acid peptide (sequence GVSWGLR) and a shortened analog of spadin. Its proposed mechanism is inhibition of the TREK-1 (TWIK-related K+) channel, a two-pore-domain potassium channel (K2P2.1 / KCNK2) implicated in mood regulation.… |
| Half-Life | — | Not characterized in humans. As a small 7-amino-acid peptide a short plasma half-life is expected; in mice the parent peptide spadin lost antidepressant activity by about 7 hours after a single dose, while modified analogs (e.g., G/A-PE 22-28) extended the behavioral effect to roughly 21-23 hours [PMID:28955242]. |
| Typical Dose Range | 500-1,000 mg | 250-2000 mcg subcutaneous per dose (empirical research-chemical community range; no clinically validated human dose exists; effective preclinical rodent doses were far lower, ~3 mcg/kg). |
| Dosing Frequency | Once to twice daily (500 mg per dose) | Once daily or every other day (research-chemical community protocols; no validated clinical dosing schedule). |
| Administration | — | — |
| Side Effects | In the 12-week human trial the extract was well tolerated; the only notable adverse effects versus placebo were a slightly higher rate of mild digestive complaints and headaches [PMID:34531736]. Because of its stimulant-like, dopaminergic and wake-promoting… | No human side-effect data exist for PE-22-28 because it has never been tested in people. What can be said comes from rodent studies of PE-22-28, spadin and their analogs, plus general considerations for injected research peptides. In the preclinical work, the… |
| Molecular Weight | — | 773.9 g/mol |
| Common Vial Sizes | — | — |
Price tracking
Sabroxy (Oroxylin A): potential benefits
- Episodic memory: in the one human trial, a standardized Oroxylum indicum extract improved episodic memory and immediate word recall versus placebo [PMID:34531736].
- Working memory and learning speed: the same trial reported gains in numeric working memory and a faster rate of learning on a location-learning task [PMID:34531736].
- Focus and attention (preclinical): dopaminergic, stimulant-like activity reduced inattention and impulsivity in an ADHD rat model [PMID:23371806].
- Neuroprotection and BDNF (preclinical): rodent studies show increased BDNF/CREB signaling, less neuroinflammation, and enhanced hippocampal neurogenesis [PMID:17174385][PMID:41330961].
- Antioxidant and mitochondrial support (preclinical): the extract lowered oxidative stress and restored mitochondrial function in mice [PMID:34081735].
PE-22-28: potential benefits
- Antidepressant-like effects in rodent models of depression (preclinical only)
- Potent, selective inhibition of the TREK-1 (K2P2.1) potassium channel (IC50 ~0.12 nM)
- Rapid-onset (~4-day) antidepressant profile in animals, unlike the multi-week lag of SSRIs
- Increased hippocampal neurogenesis in mice
- Increased cortical synaptogenesis (PSD-95) and BDNF expression in preclinical studies
- No human-validated benefits; not approved for any use (research use only)
Frequently asked
What's the difference between Sabroxy (Oroxylin A) and PE-22-28?
Sabroxy (Oroxylin A) is a nootropics that sabroxy is a standardized whole-plant extract of oroxylum indicum (indian trumpet tree) bark, typically standardized to 10% oroxylin a, and also containing related flavones such as…. PE-22-28 is a nootropics that pe-22-28 is a synthetic 7-amino-acid peptide (sequence gvswglr) and a shortened analog of spadin. its proposed mechanism is inhibition of the trek-1 (twik-related k+) channel, a…. The two differ in mechanism, half-life (not reported vs Not characterized in humans. As a small 7-amino-acid peptide a short plasma half-life is expected; in mice the parent peptide spadin lost antidepressant activity by about 7 hours after a single dose, while modified analogs (e.g., G/A-PE 22-28) extended the behavioral effect to roughly 21-23 hours [PMID:28955242].), and typical dose range.
Which has the longer half-life, Sabroxy (Oroxylin A) or PE-22-28?
Sabroxy (Oroxylin A) has a half-life of not reported. PE-22-28 has a half-life of Not characterized in humans. As a small 7-amino-acid peptide a short plasma half-life is expected; in mice the parent peptide spadin lost antidepressant activity by about 7 hours after a single dose, while modified analogs (e.g., G/A-PE 22-28) extended the behavioral effect to roughly 21-23 hours [PMID:28955242].. Longer half-lives generally mean less frequent dosing but slower on/off kinetics.
Can you stack Sabroxy (Oroxylin A) and PE-22-28?
Stacking depends on mechanism overlap, safety profile, and goals. Sabroxy (Oroxylin A) and PE-22-28 should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds.
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