Symptom first. Not product first.
Tell us what is wrong. We will tell you what to look for.
Most dispensaries stock the same flower, the same edibles, the same carts. The hard part was never the catalogue — it is knowing what to ask for. Dr. Cannabis starts with your symptom, tells you what the evidence actually supports, and points you to the nearest state-licensed dispensary.
Every claim sourced
Evidence tiers follow the 2017 National Academies review. Where the evidence is weak, we say so instead of selling you something.
Real dispensaries only
Listings come from state regulator licence registers. Currently covering CT, NY, OR, PA, with licence number and verification date on every entry.
No strain mythology
Indica and sativa labels do not predict effects — the genomics are clear. We work from cannabinoids, terpenes, format, and dose.
Where the evidence is strongest
The National Academies placed only three indications in its highest category. These pages start there.
Chronic pain
Pain lasting more than three months. The single indication with the strongest evidence base for cannabis in adults.
Chemotherapy-induced nausea and vomiting
Nausea and vomiting caused by chemotherapy. One of three indications with substantial evidence, and the basis for two FDA-approved medicines.
Multiple sclerosis spasticity
Muscle stiffness and spasm in multiple sclerosis. Substantial evidence for patient-reported improvement; weaker for clinician-measured.
Neuropathic pain
Pain from nerve damage — burning, shooting, or electric in quality. Covered by the chronic pain finding.
Arthritis
Joint pain and inflammation. Covered by the chronic pain finding.
Epilepsy and seizure disorders
Prescription CBD has strong RCT evidence in three specific syndromes. Dispensary products do not.
Browse by what is bothering you
26 conditions, each with its evidence tier stated up front.
Pain & inflammation
Digestive & appetite
Neurological
Sleep
Mood & stress
Other
Guides
The practical questions, answered from published sources.
Your first time: a practical guide
What to buy, how much to take, what it will feel like, and what to do if you take too much.
How to dose cannabis
Published starting doses, titration schedules, and the ceiling above which more stops helping.
Indica vs sativa: what the science actually says
The genomic evidence that the industry's most-used categories do not predict effects — and what to use instead.
How to read a certificate of analysis
The four things worth checking on a lab report, and the arithmetic behind total THC.
Cannabis and your other medications
The documented interactions that matter, drawn from the Epidiolex label and published case reports.
Cannabis safety: the risks worth knowing
Pregnancy, adolescent brain development, psychosis risk, driving, hyperemesis, and edible overconsumption.
Know your state
Cannabis law differs by state, and federal law changed in April 2026.
25
Adult-use and medical
17
Medical only
8
Limited CBD only
1
No program
Counts cover the 50 states and the District of Columbia. Territories are not included. Source: National Conference of State Legislatures.
Common questions
- How much THC should I start with?
- Published guidance converges on 1 to 2.5 mg of THC for oral products. Health Canada advises looking for edibles containing 2.5 mg or less; the 2021 Delphi consensus on cannabinoid dosing recommends initiating THC at 1 to 2.5 mg; MacCallum and Russo suggest 2.5 mg at bedtime, or 1.25 mg for cautious users. A typical commercial gummy is 10 mg, so a starting dose is roughly a quarter of one.
- Does indica or sativa tell me how a product will feel?
- No. A 2021 Nature Plants study genotyping over 100 samples found indica- and sativa-labelled cannabis was genetically indistinct on a genome-wide scale. A 2022 analysis of 89,923 commercial samples found the categories highly intermingled with no clear chemical separation. Compare total THC, total CBD, and the top three terpenes on the batch lab result instead.
- What does cannabis actually have good evidence for?
- The 2017 National Academies review placed exactly three indications in its highest evidence category: chronic pain in adults, chemotherapy-induced nausea and vomiting with oral cannabinoids, and patient-reported multiple sclerosis spasticity. Exactly one indication reached moderate evidence: short-term sleep outcomes where the sleep disturbance is associated with sleep apnea, fibromyalgia, chronic pain, or MS.
- How long do edibles take to work?
- Health Canada puts onset at 30 minutes to 2 hours, with up to 4 hours to feel full effects. That delay is why edibles accounted for 10.7% of cannabis-attributable emergency visits in one study while representing 0.32% of sales. Wait four hours before taking more.
- Are the dispensaries on this site verified?
- Every listing comes from a state regulator’s published licence register and carries its licence number, its source, and the date we last verified it. We do not accept paid placement and we never generate a listing.