A medical cannabis vaporizer dose starts at 1 to 2 mg of THC per session, taken as one short 2 to 3 second inhale, followed by a full 15 minute wait before any second inhale. Vaporized THC enters the bloodstream through the lungs in minutes, so effects begin in 5 to 15 minutes and peak around 15 to 30 minutes. Because the peak arrives fast, you judge the dose after the wait, not immediately after the puff.
read more
What Is a Good Starting Vaporizer Dose for Medical Cannabis?
Dose ranges shift with experience, tolerance, and the condition being treated. A clinician-guided plan usually starts at the low end and moves up only when a session fails to give relief.
read more
- First-time or low-tolerance: 1 to 2 mg THC, which is often a single short inhale.
- Occasional user: 2 to 5 mg THC, taken as two or three small inhales spaced 15 minutes apart.
- Daily or long-term user: 5 to 10 mg THC per session, still titrated upward in single-puff steps.
- High-THC concentrates: cut the puff count in half, since a single draw can carry several milligrams.
These figures are general starting points, not prescriptions. Your authorized clinician sets the dose for your diagnosis and product.
microdosing weed chart
How Many Milligrams of THC Are in One Puff?
A 2 to 3 second inhale from a flower vaporizer loaded with mid-potency cannabis typically delivers an estimated 1 to 3 mg of THC. The exact number depends on the THC percentage on the label, how finely the material is ground, and how hard you draw.
Inhaled cannabis has a faster and higher absorption rate than edibles, which is why vapor doses are measured in single milligrams rather than tens of milligrams. A 10 mg edible and a 10 mg vapor session do not feel the same.
What Temperature Should You Vape Medical Cannabis At?
Temperature controls which compounds release, so it shapes both the effect and the harshness of the vapor.
- 160 to 180 C (320 to 356 F): light, clear-headed effects with more terpenes and less body heaviness.
- 180 to 200 C (356 to 392 F): stronger THC release and a fuller, heavier effect.
- Above 210 C (410 F): closer to combustion, harsher on the airway, and rarely needed for medical use.
Pick one temperature and keep it fixed while you titrate. Changing heat and dose at the same time makes the result impossible to read.
How Do You Titrate a Vaporizer Dose Safely?
- Write down your starting dose, product name, THC percentage, and temperature.
- Take one inhale and stop. Put the device down.
- Wait 15 minutes and rate your symptom relief and any side effects.
- Repeat one inhale at a time until you reach relief, then stop for the session.
- Hold that total for three to five days before changing anything.
- Increase by one inhale only if relief is still not enough at that stable dose.
Keep a simple log for the first two weeks. Patterns show up fast when the numbers are written down.
How Long Do Vaporizer Effects Last?
Effects usually last 1 to 3 hours, with the first 30 minutes being the strongest. Relief fades gradually rather than stopping at a set time, and leftovers from a previous session can stack on top of a new one. Space sessions at least 3 to 4 hours apart when you are still finding your dose.
What Changes Your Dose Over Time?
Tolerance builds with daily use, and the same puff count can slowly deliver less relief. Potency differences between batches, a new device, a different grind, and even how hydrated you are can shift the result.
Health factors matter too. Liver function, other medications, and conditions such as anxiety or heart problems can change how cannabis affects you. Talk with your clinician before adjusting a medical dose.
Can You Take Too Much From a Vaporizer?
You cannot fatally overdose on cannabis, but too much THC causes anxiety, racing heart, dizziness, nausea, and confusion. These effects pass within a few hours and are managed by resting, hydrating, and staying calm.
The main risk of overshooting is a bad session, not lasting harm. That is exactly why single-inhale titration with a 15 minute wait works better than chasing relief with back-to-back puffs.
Is Vaping Better Than Smoking for Medical Dosing?
Vaporizing heats cannabis below the point of burning, so it avoids the smoke and tar that come with combustion. That makes dose control easier and the airway exposure lower. It does not make cannabis risk-free, and inhaled cannabis still affects heart rate, memory, and coordination.