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    CBDA molecular structure

    CBDA Stats & Data

    PubChem
    MW358.5
    FormulaC22H30O4
    LogP6.6
    IUPAC2,4-dihydroxy-3-[(1R,6R)-3-methyl-6-prop-1-en-2-ylcyclohex-2-en-1-yl]-6-pentylbenzoic acid
    InChIKeyWVOLTBSCXRRQFR-DLBZAZTESA-N
    Chemical Class Phytocannabinoid
    Half-Life Unknown in humans for native CBDA; likely short (hours). A stabilized methyl‑ester analogue exists primarily to improve stability, underscoring native CBDA’s lability.

    Measured Affinities

    Guide to PHARMACOLOGY

    Measured binding and functional data for cannabidiolic acid, curated by the IUPHAR/BPS Guide to PHARMACOLOGY. Each row cites the paper it came from. Lower concentrations mean tighter binding — a value in the sub-nanomolar range indicates a very potent interaction.

    Target Action Measure Value Concentration Species Source
    TRPA1 Trpa1 Agonist pEC50 4.92 12,023 nM Rat PMID 20356305

    Reading this. pKi, pEC50 and pIC50 are negative log molar values, so a higher number means a tighter interaction; the concentration column converts them for you. Values from non-human species are laboratory measurements and do not translate directly to human effect. Receptor affinity is not a dose — it describes what a molecule binds, not how much of it is safe to take.

    Receptor data from the IUPHAR/BPS Guide to PHARMACOLOGY (v2026.2), licensed CC BY-SA 4.0. Matched to this substance by InChIKey.

    Tolerance & Pharmacokinetics

    drugs.wiki
    Half-Life
    Unknown in humans for native CBDA; likely short (hours). A stabilized methyl‑ester analogue exists primarily to improve stability, underscoring native CBDA’s lability.
    Addiction Potential
    Very low; no documented cases of compulsive use or physiological dependence.

    Tolerance Decay

    Half tolerance 14d Baseline ~28d

    No controlled data. Repeated daily use appears to show minimal escalation needs anecdotally; any tolerance seems to be modest and reverses within 2–4 weeks off use.

    Cross-Tolerances

    CBD (partial)
    30% ●○○

    Harm Reduction

    drugs.wiki

    Rationale 1 – Mechanism and potency vs CBD: Preclinical studies show CBDA suppresses nausea/vomiting and enhances 5‑HT1A receptor activation at doses orders of magnitude lower than CBD; this supports starting with lower doses and anticipating stronger anti‑nausea/anxiolytic effects at small amounts. This also implies additive effects with other 5‑HT1A agents. Rationale 2 – Decarboxylation and preservation: CBDA is the acidic precursor to CBD and decarboxylates upon heating; avoid smoking/vaping or heating tinctures if the intent is to ingest CBDA specifically. Erowid’s cannabis constituents list and cannabinoid chemistry references support that acidic cannabinoids convert to neutral forms with heat/light/time. Store cool, sealed, and away from light to reduce conversion. Rationale 3 – Product verification: Drug checking programs report mislabeling/adulteration of ‘CBD’ oils with potent semi‑synthetic cannabinoids (e.g., Δ9‑THCP) and other add-ins; insist on a recent third‑party COA that quantifies CBDA/CBD and THC and screens for novel cannabinoids. This reduces risk of unexpected intoxication or positive drug tests. Rationale 4 – Anticoagulants: Multiple case reports show CBD raises INR and necessitates warfarin dose reductions; while CBDA‑specific clinical data are sparse, caution is warranted and INR monitoring advised when initiating or changing CBDA due to possible overlapping CYP pathways. Rationale 5 – Benzodiazepines (clobazam): CBD markedly increases active metabolite N‑desmethylclobazam (via CYP2C19 inhibition), increasing sedation; CBDA’s direct effect here is not established but prudence dictates monitoring and starting low if co‑used. Rationale 6 – Psychedelics: Activation of 5‑HT1A receptors can attenuate certain 5‑HT2A‑mediated psychedelic effects in humans (e.g., buspirone blunting psilocybin visuals). CBDA’s 5‑HT1A activity therefore may modestly dampen some psychedelic phenomenology; keep expectations realistic. Rationale 7 – Stability/formulations: A stabilized analogue (CBDA methyl ester, EPM301) was developed because native CBDA is labile; this underscores the need to minimize heat and prolonged storage if retaining CBDA is desired. Additional HR tips: - Start low (e.g., 2–5 mg oral or 1–2 mg sublingual) and titrate by 2–5 mg steps. - Take with a small amount of dietary fat if oral (may aid absorption, as with other cannabinoids). - Space from sedatives by several hours; avoid combining first doses. - If on interacting meds (warfarin, clobazam, narrow TI drugs), involve a clinician and add monitoring (e.g., INR or drug levels) during the first 2–3 weeks after any CBDA change. - Use products with batch COAs; avoid heating CBDA products (baking/vaping) unless conversion to CBD is intended.

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