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KKILLER*.HEALTH

/ Kills / FOG KILL

#05 / BRAIN FOGINTERMEDIATEOTC · NO SCRIPT6-WEEK CYCLE

FOG KILL

Your brain called. It wants back.

// 01

Summary.

Cognitive-clarity stack. Nasal-spray nootropic peptides that cross the blood-brain barrier and reset the signal. SEMAX for acute clarity, SELANK for anxiolysis without sedation, DIHEXA for dendritic plasticity at the synapse level.

// 02

The stack.

Peptide · 01

SEMAX

ACTH fragment

BDNF upregulator. Nasal spray. Fast-acting clarity.

0.1% nasal spray

Peptide · 02

SELANK

Tuftsin analog

Anxiolytic without sedation. Pairs with SEMAX.

0.15% nasal spray

Peptide · 03

DIHEXA

Angiotensin IV analog

Dendritic spine density. Oral or topical.

8–12 mg capsule

// 03

Reconstitution.

SEMAX 0.1% nasal spray · 1–2 drops per nostril · AM
  Pre-formulated. Store refrigerated.

SELANK 0.15% nasal spray · 2 drops per nostril · AM
  Stack with SEMAX for synergy.

DIHEXA · 8–12 mg oral capsule · AM with fat
  Cycle 4 weeks on / 2 weeks off · not for daily long-term use.

Cycle: 6 weeks on · 2–4 weeks off
Take with morning sunlight for circadian sync (STARTED · S + T).

// 04

Dosing table.

LevelStackUnits (U-100)Freq
ACUTESEMAX 0.1% nasal1–2 drops / nostrilAM
BALANCESELANK 0.15% nasal2 drops / nostrilAM
PLASTICITYDIHEXA oral8–12 mgAM with fat · 4 on / 2 off

// 05

Cycle & timing.

ON

6 WEEKS

DIHEXA runs 4 on / 2 off inside the window. Nasal peptides daily AM.

OFF

2–4 WEEKS

Full washout. Re-baseline before repeating.

// 06

Contraindications.

  • Active seizure disorder.
  • SSRI / MAOI co-administration — discuss with a physician.
  • Pregnancy / lactation. No data.
  • Uncontrolled hypertension (DIHEXA acts on the renin-angiotensin axis).

// 07

Evidence.

MECHANISM

SEMAX drives BDNF and acute arousal. SELANK balances the GABAergic side so you're clear, not wired. DIHEXA extends the plasticity window so the day's work consolidates.

WHAT IT WON'T FIX

Sleep debt. Subclinical hypothyroidism. A 2 AM bedtime. Chronic alcohol. Get a TSH, a lipid panel, a ferritin and a 25-OH-vitamin-D before you spend on nootropics. Boring labs solve most 'fog'.

// 08

Community polls.

DID IT WORK FOR YOU?

  • BIG CLARITY BUMP52%
  • MINOR LIFT29%
  • NO CHANGE14%
  • SIDE EFFECTS > BENEFIT5%

n = 183 · self-reported, self-selected. Not a controlled trial.

FAVORITE SINGLE AGENT

  • SEMAX41%
  • SELANK33%
  • DIHEXA18%
  • NONE SOLO · STACK ONLY8%

n = 183 · self-reported, self-selected. Not a controlled trial.

// 09

Adverse events.

MILD (NASAL IRRITATION)

19

MODERATE (HEADACHE / OVER-STIM)

6

SEVERE

0

Open AE form →

// 10

Related kills.

// Disclaimer

Nothing on killer.health is medical advice. This platform is a research registry and information aggregator. Content is drawn from peer-reviewed publications, clinical protocols and community sources. killer.health does not endorse any compound, supplier or treatment. Always work with a licensed physician inside an established clinical relationship before starting, stopping or modifying any protocol. Data capture is governed by IRB PPRN-001-2025. Anonymous submissions are the default.

// Shop the portfolio · our brands

BUY THE STACK.

Every brand below is ours. Clinician-gated injectables, OTC orals, the book, the lab. One ecosystem, one customer, one login.

Each brand above is a separate operating company under Killer Health. Clinician-gated products require a verified NPI. Peptides are research compounds — most are not FDA-approved for human use and legality varies by jurisdiction. Nothing on this page is medical advice.