The short answer
There is no standard cannabis dose for osteoarthritis. A common starting point for THC products is 1 to 2.5 mg per dose for anyone new to cannabis, with increases of no more than 1 to 2.5 mg every two to three days. CBD-only products often start at 5 to 20 mg per day. The goal is the smallest dose that lowers pain enough for you to walk, cook, or sleep, not the largest dose you can tolerate.
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Before you start
- Check your state law. Medical and adult-use rules differ on possession limits and product types.
- Tell your clinician about every drug you take, especially blood thinners, opioids, benzodiazepines, and seizure medicines.
- Buy from a licensed dispensary that prints lab results for THC, CBD, and contaminants on the label.
- Choose one product and one route. Combining an edible with a vape makes the result impossible to read.
Why osteoarthritis changes the math
Osteoarthritis pain comes from worn cartilage, inflamed joint lining, and the muscle guarding that follows. That mix responds to different routes in different ways. A topical may calm one knee with no intoxication. An edible may help morning stiffness and sleep at the cost of a slow onset. Inhaled cannabis acts within 5 to 15 minutes, which helps during a flare but fades within a few hours.
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Onset times by form
- Inhaled (flower or vape): 5 to 15 minutes.
- Tincture held under the tongue: 15 to 45 minutes.
- Edible or capsule: 60 to 120 minutes, sometimes longer.
- Topical salve or lotion: local effect, no intoxication in most users.
- Transdermal patch: steady release across several hours.
How to titrate your dose
- Score your pain from 0 to 10 and note how far you can walk before it stops you.
- Take your starting dose on a day when you will be home for at least four hours.
- Wait the full onset window for that form before you consider a second dose.
- Hold the same dose for two to three days and score your pain at the same time each day.
- If pain has not moved, raise the next dose by 1 to 2.5 mg THC or 5 mg CBD.
- Stop raising the dose once pain drops by about 2 points or side effects appear.
- If you feel drowsy, anxious, dry-mouthed, or your heart races, return to the last dose that worked.
- Restart the whole process if you switch brands, because potency labels vary between producers.
Track what you take
Keep a note with the date, product name, mg of THC and CBD, time of dose, and pain score two hours later. After two weeks you will see which form and dose line up with your better days. Bring that note to your clinician rather than a general description of what you use.
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Red flags
- Chest pain, fainting, or a racing heartbeat that does not settle.
- Confusion, hallucinations, or vomiting that will not stop.
- Falls or new weakness in a leg, which can point to a problem beyond osteoarthritis.
- Use that climbs week after week with no pain relief.
This is general information, not medical advice. Osteoarthritis has no cannabis cure, and dosing decisions belong with a clinician who knows your history.