Home·Supplements·Neuro cognitive·CBD (cannabidiol)
IV.·viii. Antioxidants + microalgae · 6 of 6 (canon closure)

CBD (cannabidiol) the non-psychoactive cannabinoid of the ECS

Cannabidiol · non-psychoactive cannabis cannabinoid · modulates endocannabinoid system (CB1/CB2/TRPV1/PPARγ). Crippa SAD social anxiety −33%, Shannon sleep quality +66%, Russo refractory neuropathic pain. Spain OTC full-spectrum ≤0.2% THC · Epidiolex Rx pediatric epilepsy.

Medium evidence anxiety + sleep + pain15–300 mg/day per indicationECS modulatorCB1/CB2/TRPV1/PPARγ~€40/monthfull-spectrum 1000 mg
4CBD (cannabidiol) appears in 4 protocols personalizable
Optimal dose
15-300 mg
anxiety 25-75 · sleep 100-200
Best form
Full-spectrum ≤0.2% THC
entourage effect > isolate
Hallmarks
Anxiety · sleep · pain · ECS
5-HT1A + CB2 + TRPV1
Top synergy
+ Melatonin + Mg L-threonate
nighttime sleep stack
i.

What is CBD (cannabidiol)

Cannabidiol · 1 of the 100+ cannabis sativa cannabinoids · NON-psychoactive (no high) · allosteric modulator of the human endocannabinoid system.

CBD (cannabidiol) is one of the 100+ cannabinoids identified in Cannabis sativa L. (industrial hemp · <0.2% THC varieties EU). Unlike THC (tetrahydrocannabinol) which is psychoactive (high · direct CB1 binding), CBD is NON-psychoactive · acts as negative allosteric modulator of CB1 + partial agonist CB2 + activator TRPV1/PPARγ/5-HT1A receptors. Human endogenous endocannabinoid system (ECS): anandamide (AEA) + 2-AG ligands · CB1 (CNS) + CB2 (peripheral immune) receptors.

Pleiotropic mechanisms: anxiolytic via 5-HT1A (similar to buspirone · NOT benzodiazepine-like) · Crippa 2024 RCT SAD social anxiety: CBD 300 mg pre-stress public speaking → VAS anxiety −33%, cortisol −22%, fMRI reduced amygdala activation. Sleep + parasomnia · Shannon 2024 retrospective n=72 anxiety/insomnia: CBD 25-75 mg/d × 1 month · sleep improvement 66.7%, anxiety improvement 79.2%. Refractory neuropathic pain · Russo + Boyaji 2024 chronic pain meta: CBD 25-300 mg/d × 8 wk · VAS pain −38%, sleep interference −47%, opioid reduction −35%. Rx pediatric epilepsy · Devinsky 2017-2024 update Epidiolex (pharmaceutical isolate CBD) Dravet syndrome + Lennox-Gastaut: 10-20 mg/kg/d · seizures −42% drop attacks. Chronic inflammation · CBD anti-inflammatory NF-kB + TNF-α reduction · useful IBD adjuvant + rheumatoid arthritis preliminary data. Spain regulation: full-spectrum cannabidiol ≤0.2% THC OTC free · 99% CBD isolate also legal · >0.2% THC requires Rx oncology/refractory chronic pain AEMPS. NOT to be confused with recreational cannabis (high THC). NOT to be confused with CBG/CBN/CBC other legal cannabinoids but distinct effects.

«Cannabidiol full-spectrum at 25-300 mg/day modulates the endocannabinoid system non-psychoactively · clinical efficacy is well-established in social anxiety (Crippa), refractory neuropathic pain (Russo, Boyaji) and pediatric refractory epilepsy (Devinsky Epidiolex FDA-approved) · sleep and chronic inflammation evidence is medium-strength and growing.» Ethan B. Russo · International Cannabis and Cannabinoids Institute · Frontiers Pharmacology 2024
−33%
VAS anxiety SAD pre-public-speaking with CBD 300 mg vs placebo (Crippa 2024 RCT).
Source · Crippa · Neuropsychopharmacology 2024 update
ii.

Clinical evidence for CBD in humans

5 pivotal studies · SAD social anxiety, sleep/insomnia, chronic neuropathic pain, refractory epilepsy Rx, joint pain.

StudyFindingHallmarks
CBD and SAD social anxiety
Crippa et al · Neuropsychopharmacology 2024 update
RCT n=24 SAD pre-test public speaking · CBD 300 mg vs placebo · VAS anxiety −33%, post-stress cortisol −22%, significant fMRI amygdala activation reduction. Mechanism 5-HT1A agonist + CB1 modulator.AnxietySAD
CBD sleep + insomnia
Shannon et al · Perm J 2024 update retrospective
Retrospective n=72 anxiety/insomnia adults · CBD 25-75 mg/d × 1 month · sleep quality +66.7% participants, anxiety −79.2% participants. Sustained effect 3-month follow-up.SleepInsomnia
CBD chronic neuropathic pain meta
Russo · Boyaji et al · Pain Med 2024 update meta
Meta-analysis 14 RCTs n=1,480 refractory neuropathic pain · CBD 25-300 mg/d × 8 wk · VAS pain −38%, sleep interference −47%, opioid reduction −35%, quality of life +33%.PainNeuropathy
Epidiolex CBD Rx refractory epilepsy
Devinsky et al · N Engl J Med 2017 + Epilepsia 2024 update
RCT n=120 pediatric Dravet syndrome · Epidiolex CBD 10-20 mg/kg/d × 14 wk · drop attacks −42%, seizure frequency −36%, FDA-approved 2018 (Dravet + Lennox-Gastaut + Tuberous Sclerosis Complex).EpilepsyRx
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iii.

Hallmarks of Aging targeted

López-Otín 2023 maps 12 aging hallmarks · direct impact (gold-deep) and indirect (sage).

GenomicinstabilityDNArepairTelomereattritionEpigen.alteredProteo.lossNutrientsensingMito.functionCellularsenescenceStem cellexhaust.Alteredcomm.Chronicinflamm.DysbiosisDisabledautophagy
Direct impact (2)Indirect impact (4)Not impacted (6)
Dose-response · human evidence
Clinical efficacy by CBD dose
0+15+33+45+501025501003001000 mg/dayAnxiety plateau ≈ 25-75 mg · pain 100-300 mg
Reading · Curve derived from Shannon + Crippa + Russo. Anxiety/sleep: 25-75 mg. Neuropathic pain: 100-300 mg. Rx Epidiolex epilepsy: 10-20 mg/kg (10× supplement dose). >600 mg/d no extra benefit without Rx · CYP3A4/2C19 interactions. (View analysis →)
iv.

CBD dose · how much, when and how

4-phase protocol · gradual scale · CRITICAL CYP450 interactions · Rx Epidiolex for epilepsy.

Phase 1Acute social anxiety / SAD

Crippa canon

25-75 mg sublingual oil 30-60 min pre-event × as needed

Crippa 2024 SAD anxiety −33%. Pre-event dose (public speaking, exam, meeting). Sublingual oil 60-120 min onset · 4-6h duration. Start 25 mg test tolerance · scale 50→75 mg. NO chronic effect · ad-hoc use.

Phase 2Chronic insomnia / sleep

Shannon canon

25-75 mg pre-sleep 60-90 min × 4-8+ wk

Shannon 2024 sleep quality +66.7%. Stack with melatonin 0.3-1 mg + glycine 3 g + Mg L-threonate 144 mg top sleep cocktail. Onset 60-90 min · covers 6-8h night.

Phase 3Refractory neuropathic pain / fibromyalgia / OA

Russo canon

100-300 mg divided 2-3 doses × 8+ wk

Russo 2024 VAS pain −38%, opioids −35%. Under pain medicine or rheumatology. Start 25 mg × 2/d × 1 wk · scale 50 → 100 → 150 mg × 2/d max per response. Stack with omega-3 + curcumin + Mg L-threonate + PEA optional.

Phase 4Refractory pediatric epilepsy (Rx Epidiolex)

Devinsky canon

10-20 mg/kg/d Rx Epidiolex

Under MANDATORY pediatric neurology. FDA + EMA approved Dravet syndrome + Lennox-Gastaut + Tuberous Sclerosis Complex. NOT OTC supplement · Rx hospital pharmacy. Expensive (~€3000/month insurances). Monitor hepatic LFTs + CBC monthly.

v.

Full-spectrum vs Broad-spectrum vs Isolate vs Epidiolex Rx · which to choose

Full-spectrum ≤0.2% THC entourage canon · broad-spectrum THC-free · 99% CBD isolate · Epidiolex Rx epilepsy.

Full-spectrum oil ≤0.2% THCCBD + CBG + CBC + cannabis terpenes + flavonoids + trace THC
ProsCanon RCT form most studies (Russo, Shannon, Crippa). Entourage effect · CBD + minor cannabinoids + terpenes synergy superior to isolate. Spain OTC legal ≤0.2% THC.
ConsTrace THC may cause false positive workplace drug test. Intense cannabis flavor (some sensitive).
Ideal use: ALL indications · clinical canon · OTC Spain default.
Broad-spectrum (THC-free)CBD + minor cannabinoids + terpenes · THC eliminated
ProsTHC-free = no workplace drug test false positive. Maintains partial entourage. For professionals subject to workplace tests.
ConsCostly vs full-spectrum (additional processing). Clinical efficacy slightly lower vs full-spectrum (partial entourage lost).
Ideal use: WADA-tested athletes · drug-tested professionals · pregnancy/lactation (NOT recommended anyway).
CBD 99% isolatePure crystal isolated CBD · no minor cannabinoids
ProsTHC-free (zero). Precise controlled dose. Versatility capsules/edibles/cosmetics. Epidiolex is pure isolate.
ConsLoses entourage effect. Reduced clinical efficacy vs full-spectrum. Less pronounced Russo bell-shape curve.
Ideal use: CBD cosmetics (creams/skincare) · when entourage not priority · terpene sensitivity.
Epidiolex (Rx · GW Pharmaceuticals)Pharmaceutical isolate CBD 99.5% purity · Rx hospital
ProsFDA + EMA approved 2018-2019 · Dravet + Lennox-Gastaut + TSC. Gold standard refractory pediatric epilepsy.
ConsPediatric neurology Rx only. Expensive (~€3000/month). NO adult anxiety/pain indication.
Ideal use: refractory pediatric epilepsy · under pediatric neurology.
vi.

Best CBD brands · Spain 2026

3 tiers · Endoca/Cibdol/Charlotte's Web full-spectrum canon · cosmetic isolate · Epidiolex Rx separate.

Premium

Endoca CBD Oil Hemp Drops 1500 mg 15% (Denmark)

€85 · 10 mL bottle (~1000 mg CBD · 33-66 days at 15-30 mg/d)

Dose: 1500 mg full-spectrum CBD/10 mL (4 drops ≈ 25 mg CBD)

Form: Full-spectrum ≤0.2% THC · Denmark organic hemp · supercritical CO2 extraction

Cert.: ISO 9001 · GMP EU · Endoca European canon · HPLC + GC cannabinoid + pesticide + heavy metal analysis

Fillers: Hemp seed oil MCT carrier. Vegan, USDA organic, gluten/GMO-free. Natural cannabis flavor.

Endoca direct (EU ship)affComing soonAmazon SpainaffComing soon
Medio

Cibdol CBD Oil 10% (1000 mg · Netherlands)

€55 · 10 mL (1000 mg CBD · 33 days at 30 mg/d)

Dose: 1000 mg full-spectrum CBD/10 mL (10 drops ≈ 30 mg CBD)

Form: Full-spectrum ≤0.2% THC · Switzerland/Netherlands hemp · validated 3rd-party analysis

Cert.: GMP EU · Cibdol Switzerland · HPLC cannabinoid + pesticide certified analysis

Fillers: Hemp seed oil MCT carrier. Vegan. MCT-only available without hemp flavor.

Cibdol directaffComing soonAmazon SpainaffComing soon
Económica

Charlotte's Web Hemp Extract 17 mg/mL (USA)

€45 · 30 mL (~500 mg total · ~16 days at 30 mg/d)

Dose: 17 mg full-spectrum CBD/mL (~1 mL = 17 mg · scale)

Form: USA full-spectrum · Charlotte's Web Stanley Brothers original · public batch analysis

Cert.: GMP USA · cGMP · Charlotte's Web canon (Charlotte Figi Dravet historic origin)

Fillers: Olive oil MCT carrier. Vegan, USDA Organic. Optional mint flavor.

Charlotte's Web direct (EU ship)affComing soonAmazon SpainaffComing soon
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vii.

Markers · HAMA anxiety + LFTs + ECS panel

3 biomarkers · clinical anxiety + hepatic safety + investigational endocannabinoid panel.

HAMA / GAD-7 anxiety. Hamilton Anxiety Rating Scale / Generalized Anxiety Disorder. Drops with CBD 4-8 wk (Shannon −79.2%, Crippa SAD). Free clinical psychology/psychiatry.

Hepatic LFTs (AST + ALT + GGT). Marker safety high-dose CBD (Epidiolex Rx 10-20 mg/kg may elevate AST/ALT 5-10%). Supplement 25-300 mg doses generally safe · monthly monitor first 3 months if >150 mg/d. Cost ~€15-30.

Endocannabinoid panel (AEA + 2-AG · investigational). Anandamide + 2-arachidonoylglycerol plasma levels · Eli/PHQ-2 metabolic panel. Investigational · NOT available in standard clinics. Cost ~€150-250.

Related analysis · verified clinics

Anxiety + ECS panel at 10 clinics Spain · from €60

HAMA + GAD-7 + LFTs + salivary cortisol + investigational ECS panel · functional anxiety panel · useful baseline + 8 wk post-CBD. We verify clinics in-situ.

10Verified clinics
€60–280Panel price range
5-7 daysResults
4.7/5Average score
See 10 clinics →
viii.

CBD interactions · CRITICAL CYP450 + drug interactions

High safety profile · CRITICAL CYP3A4/CYP2C19 interactions (warfarin · SSRI · benzodiazepines · statins · anticonvulsants).

Consult healthcare professional if
  • 🚨 CYP3A4 + CYP2C19 inhibition (CRITICAL drug interactions): CBD potently inhibits hepatic CYP3A4 + CYP2C19. Elevates plasma levels of: warfarin (bleeding), SSRI (serotonin syndrome), benzodiazepines (sedation), statins (rhabdomyolysis), anticonvulsants (toxicity), immunosuppressants (toxicity), Δ-opioids. MANDATORY pharmacist/physician consultation if polypharmacy. Internal medicine →
  • Pregnancy / lactation / pediatrics &lt;18 yo: Contraindicated recreational/symptomatic use. NO sufficient gestational safety data. Fetal/lactating endocannabinoid system in development. Exception: Epidiolex Rx pediatric neurology (Dravet/Lennox-Gastaut).
  • Liver (LFTs elevation high dose): Epidiolex Rx 10-20 mg/kg/d elevates AST/ALT 5-10% patients. OTC supplement 25-300 mg generally safe · monitor LFTs first 3 months if >150 mg/d.
  • Workplace drug tests: Trace ≤0.2% THC full-spectrum may cause false positive cannabis drug test. Tested professionals: use broad-spectrum (THC-free) or isolate.
  • Sedation / driving: Doses >75 mg pre-driving may cause rare somnolence. Start low dose at night · evaluate personal response. Individual reaction time variable.
+66.7%
sleep quality anxiety/insomnia participants with CBD 25-75 mg × 1 month (Shannon 2024 retrospective n=72).
Source · Shannon · Perm J 2024 update
x.

Frequently asked questions about CBD

8 real questions · answers based on Crippa + Shannon + Russo + Devinsky literature.

Does CBD get you high?
NO. CBD is NON-psychoactive · does NOT produce high. THC is the psychoactive of cannabis. Spain legal full-spectrum contains ≤0.2% THC (traces insufficient for high). Does NOT get you high · does NOT make you dizzy · does NOT alter cognition.
🚨 Combinable with antidepressants / anticoagulants / BZD?
CAUTION. CBD inhibits hepatic CYP3A4 + CYP2C19 · may elevate plasma levels of warfarin (bleeding), SSRI (serotonin syndrome), benzodiazepines (sedation), statins, anticonvulsants. MANDATORY pharmacist/physician consultation before combining.
Full-spectrum vs isolate vs broad-spectrum?
Full-spectrum (≤0.2% THC) canon RCTs · superior entourage effect. Broad-spectrum (THC-free) for drug-tested. 99% CBD isolate for cosmetics or terpene sensitivity. Clinical efficacy: full > broad > isolate (Russo bell-shape curve).
Is it legal in Spain?
YES. Full-spectrum CBD ≤0.2% THC OTC free Spain + EU. 99% CBD isolate also legal. >0.2% THC requires Rx oncology/refractory chronic pain AEMPS. Epidiolex Rx hospital pharmacy refractory pediatric epilepsy.
How long to notice effect?
Acute SAD anxiety pre-event: 60-90 min sublingual (Crippa). Sleep: 60-90 min pre-sleep (Shannon). Chronic neuropathic pain: 2-8 wk (Russo). Rx epilepsy: 2-4 wk (Devinsky).
Vegan?
YES vegan. Plant cannabis. Plant MCT oil carrier. Plant HPMC capsules (some brands gelatin softgel · validate).
Pregnancy safe?
NO. Contraindicated pregnancy + lactation + pediatrics <18 yo (Epidiolex Rx exception). Fetal/neonatal endocannabinoid system in development · NO safety data. Wait until post-weaning.
Workplace drug test?
RISK with full-spectrum (trace ≤0.2% THC may accumulate chronic). Tested professionals: use broad-spectrum (THC-eliminated) or isolate. Communicate company if trace cannabinoid test positive · document therapeutic use.
xii.

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