There is no single mg number that works for everyone. For inhaled concentrates, most harm reduction guidance puts a first dose near 1 to 2.5 mg of THC, taken as one small puff, followed by a 10 to 15 minute wait. For concentrates you eat or drink, the starting point is 2.5 mg of THC with a 2 hour wait. Packaged concentrates in US state-legal stores often run 60% to 90% THC, which means one gram holds 600 to 900 mg of THC. The mg printed on the label is the total in the container, not one dose.
Prerequisites
- A concentrate with the THC percentage and total mg printed on the label
- A dab rig or vaporizer, plus a milligram scale or dosing scoop if you want exact portions
- A sober setting and no obligations for the next few hours
- A note app or notebook to record what you took and how it felt
Why label mg does not equal body mg
Inhaled THC reaches the bloodstream in seconds, but only part of the dose is absorbed. Inhaled bioavailability is often estimated at 10% to 30%, and it drops when you exhale early or heat the concentrate too hot. Ingested THC is absorbed through the gut, passes through the liver, and produces a stronger, longer effect from the same mg. That is why dab dosing and edible dosing use different starting numbers even when the package mg looks similar.
Do the dose math before you load the rig
- Find the THC percentage on the label. Example: 80%.
- Convert to mg per gram. 80% of 1000 mg is 800 mg of THC per gram.
- Weigh or estimate your portion. A 0.05 g piece (50 mg of concentrate) at 80% holds about 40 mg of THC.
- Divide by the number of puffs you plan. That 40 mg portion split into 8 puffs is about 5 mg per puff.
- Round down for your first attempt and take one puff.
Step-by-step for a first session
- Set a target of 1 to 2.5 mg of THC for the first puff.
- Load a piece of concentrate about the size of a peppercorn crumb, smaller than a grain of rice.
- Heat to the lower end of your device's range. High heat wastes material and makes the hit harsher.
- Inhale one slow puff, hold for 2 to 3 seconds, then exhale.
- Stop and wait 10 to 15 minutes. Inhaled effects peak inside that window.
- Write the result in your log, then decide whether to take a second puff of the same size.
- Repeat the wait between every puff instead of stacking hits back to back.
- End the session when you feel the effect you wanted. More mg will not improve it.
If you plan to eat or drink the concentrate
Raw shatter, wax, and live resin are not active when swallowed. The THC must be decarbed with heat first, then mixed into a fat such as butter or oil. Treat the result like an edible. Start at 2.5 mg of THC, wait a full 2 hours, and only then consider another 2.5 mg. Many US states cap a single edible serving at 10 mg and a whole package at 100 mg, and those caps are a useful ceiling for homemade versions too.
Signs you have taken too much
- Racing heart, sweating, or a wave of panic
- Nausea, dizziness, or trouble standing
- Confusion or slurred speech
Stop dosing. Sit or lie down, drink water, and wait. Inhaled effects fade over 1 to 3 hours. Ingested effects can last 4 to 8 hours or longer. Get medical help for chest pain, repeated vomiting, or a fainting episode.
What is the Right Dosage for Cannabis Concentrate
Adjusting over time
Tolerance rises with frequent use, so the same mg will feel weaker after a few weeks of daily dabbing. Raise your dose in 1 to 2.5 mg steps rather than doubling it. Take breaks of a few days to reset, and keep your log current so you compare sessions instead of guessing.