--- title: "Modafinil vs Dihexa: Side-by-Side Comparison (2026)" url: https://www.bodyhackguide.co/compare/modafinil-vs-dihexa description: "Compare Modafinil vs Dihexa side by side. We earn a commission on some vendor links. Mechanism, half-life, dose range, side effects and prices." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) # Modafinil vs Dihexa Side-by-side comparison of Modafinil and Dihexa: mechanism, half-life, dose range, safety profile, and vendor pricing. Modafinil: no price on file Dihexa from $79.99 ## Price snapshot ### Modafinil Current low — 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ### Dihexa Current low $79.99 current listings 7-day low — not enough history yet 30-day low — not enough history yet 30-day change — not enough history yet ## Modafinil Modafinil is a prescription wakefulness-promoting agent approved by the US Food and Drug Administration in December 1998 under the brand name Provigil (Cephalon, now Teva) for the treatment of excessive daytime… No vendor price on file. Full Modafinil profile (https://www.bodyhackguide.co/compound/modafinil) ## Dihexa Dihexa is a synthetic peptide analogue of the angiotensin IV metabolite LVV-hemorphin-7, developed at Washington State University. It is considered one of the most potent cognitive enhancers ever tested in animal models… **Lowest listed price:** $79.99 across 3 listings Full Dihexa profile (https://www.bodyhackguide.co/compound/dihexa) ## Side-by-side comparison | Attribute | Modafinil | Dihexa | | --- | --- | --- | | Category | Nootropics | Nootropics | | Research Stage | Preclinical | Preclinical | | Mechanism of Action | Modafinil's mechanism of action is genuinely incompletely understood despite more than two decades of clinical use and extensive preclinical research. It is not a classical stimulant — it does not produce the catecholamine surge of amphetamines, the direct… | Dihexa is a small-molecule analog derived from angiotensin IV (AngIV). It retains the Tyr-Ile core of Nle1-AngIV, with an N-terminal hexanoic acid cap and a C-terminal 6-aminohexanoic amide that give it metabolic stability and blood-brain-barrier penetration.… | | Half-Life | — | Not characterized in humans. Dihexa was engineered for metabolic stability (resistant to plasma and enzymatic degradation) and blood-brain-barrier penetration; in preclinical work its central procognitive effects appear to outlast its plasma presence. | | Typical Dose Range | — | 5 to 40 mg oral per day (anecdotal range; no established human dose) | | Dosing Frequency | — | Once daily (oral), typically in the morning | | Administration | — | Oral, Intranasal, Subcutaneous | | Side Effects | Modafinil's side effect profile is relatively favorable compared to classical stimulants but is not negligible. The most common side effects, reported in 5-10% or more of users in clinical trials, are headache (dose-related, typically transient but… | No controlled human safety data. Anecdotal user reports include headache, fatigue, irritability or anxiety, insomnia, and vivid dreams, usually at higher doses. The most serious concern is theoretical rather than reported: because dihexa acts on the HGF/c-Met… | | Molecular Weight | — | 504.7 g/mol | | Common Vial Sizes | — | 50mg, 100mg | ## Price tracking Tracking Dihexa prices since September 5, 2026. Trend chart unlocks once we have price snapshots from more than one day. ### Modafinil: potential benefits - No structured benefit list published. ### Dihexa: potential benefits - Synaptogenesis: formation of new dendritic spines and functional synapses (preclinical) - Memory and spatial-learning support in rodent models - Potential research application in Alzheimer's and other neurodegenerative disease models - HGF/c-Met and PI3K/Akt-linked neuroplasticity (mechanism proposed; key paper retracted) ## Frequently asked ### What's the difference between Modafinil and Dihexa? Modafinil is a nootropics that modafinil's mechanism of action is genuinely incompletely understood despite more than two decades of clinical use and extensive preclinical research. it is not a classical…. Dihexa is a nootropics that dihexa is a small-molecule analog derived from angiotensin iv (angiv). it retains the tyr-ile core of nle1-angiv, with an n-terminal hexanoic acid cap and a c-terminal…. The two differ in mechanism, half-life (not reported vs Not characterized in humans. Dihexa was engineered for metabolic stability (resistant to plasma and enzymatic degradation) and blood-brain-barrier penetration; in preclinical work its central procognitive effects appear to outlast its plasma presence.), and typical dose range. ### Which has the longer half-life, Modafinil or Dihexa? Modafinil has a half-life of not reported. Dihexa has a half-life of Not characterized in humans. Dihexa was engineered for metabolic stability (resistant to plasma and enzymatic degradation) and blood-brain-barrier penetration; in preclinical work its central procognitive effects appear to outlast its plasma presence.. Longer half-lives generally mean less frequent dosing but slower on/off kinetics. ### Can you stack Modafinil and Dihexa? Stacking depends on mechanism overlap, safety profile, and goals. Modafinil and Dihexa 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. ## See current vendor prices Listings from the vendors we track. Prices change often, so check the vendor before you buy. Modafinil prices: https://www.bodyhackguide.co/compound/modafinil?tab=prices Dihexa prices: https://www.bodyhackguide.co/compound/dihexa?tab=prices Compare all compounds: https://www.bodyhackguide.co/compare ### Before you buy Modafinil or Dihexa Check the vendor trust score. Every supplier we track is rated 0-100 on COA verification, payment transparency, shipping, reviews, and listings: one published, reproducible methodology, applied to every vendor. View Vendor Scorecard (https://www.bodyhackguide.co/vendors/scorecard) ## Related comparisons Modafinil vs Phenylpiracetam: https://www.bodyhackguide.co/compare/modafinil-vs-phenylpiracetam Bromantane vs Modafinil: https://www.bodyhackguide.co/compare/bromantane-vs-modafinil Dihexa vs Noopept: https://www.bodyhackguide.co/compare/dihexa-vs-noopept **Research use only.** BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. Prices shown are pulled from vendor listings tracked on BHG and are subject to change. We earn an affiliate commission on some outbound clicks, and every vendor is ranked on the same public, reproducible methodology. See editorial standards (https://www.bodyhackguide.co/editorial-standards) and affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). 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