Match Total Milligrams to Your Tolerance, Not the Percentage
The number that matters when you buy an RSO syringe is the total milligrams of THC in the tube and the milligrams of THC in each dose you plan to take. A one-gram syringe labeled 70 percent THC holds about 700 mg of active THC. Split across 5 mg doses, that is roughly 140 servings. Labels that show a percentage alone hide this math, which is where most first-time buyers get caught out. If you are new to oral cannabis, start between 2.5 mg and 10 mg of THC, wait a full two hours, and decide from there.
Make RSO Oil at Home Safe: Risks, Steps, and Purge Rules
What to Look For in an RSO Syringe
- Lab panel on the package. Look for total THC and total CBD in milligrams, plus a batch number that matches the test result.
- Decarboxylation confirmation. RSO is heat-treated so THCA converts to THC. Activated oil is what produces oral effects.
- Dose graduations on the barrel. Markings let you push out a measured amount instead of guessing.
- Cannabinoid ratio. THC-dominant oil feels different from a 1:1 THC-to-CBD blend. The ratio changes intensity more than the raw percentage does.
- Solvent and pesticide testing. Residual solvents and mold are the main quality risks in poorly made oil.
- Syringe hardware. Glass with a luer lock tip handles heat better than thin plastic when you warm the oil to load a dose.
Strength Ranges You Can Expect
Most legal THC-dominant RSO lands between 50 and 90 percent THC by weight. A one-milliliter syringe, which holds close to one gram, generally carries 500 mg to 900 mg of total THC. CBD-heavy or balanced versions sit lower on THC and higher on CBD. Effects arrive 30 to 120 minutes after you swallow oil, peak around the two to four hour mark, and fade over four to eight hours. Taking it with a fatty meal can slow onset and stretch duration.
How the Effects Feel
Because RSO is eaten or held under the tongue, it behaves like a strong edible rather than a vape hit. Expect body-heavy relaxation, mood lift, appetite changes, dry mouth, and slower reaction time. High doses can bring anxiety, a racing pulse, and a sense of disorientation that lasts longer than a smoked high. Tolerance builds with repeated daily use, so the same dose may feel weaker after a week of steady intake.
Common Pitfalls
- Dosing by "a grain of rice" size, which varies wildly between batches.
- Treating a percentage label as a dose guide instead of converting to milligrams.
- Stacking RSO with other edibles, alcohol, or sedatives before you know your response.
- Expecting the fast onset of inhalation and redosing too soon.
- Buying untested oil with no batch number or lab panel.
- Leaving the syringe in a hot car or direct sun, which degrades cannabinoids.
FAQ
How strong is a full RSO syringe?
A one-gram syringe of THC-dominant oil commonly contains 500 mg to 900 mg of THC. That is a large supply for most people and can last weeks or months at low doses.
How long do the effects last?
Plan on four to eight hours, with the strongest stretch in the first three hours. Food, body weight, and prior tolerance all shift the timeline.
Can I smoke or vape RSO?
RSO is decarboxylated and thick, made for oral, sublingual, or topical use. Burning it wastes material and tastes harsh.
Is RSO the same as distillate?
No. Distillate strips most plant compounds to isolate THC. RSO keeps a wider spread of cannabinoids, waxes, and plant matter, which changes both texture and effect.
How should I store it?
Keep the syringe sealed, upright, and cool. Warm it in your hand or a bag of warm water before dispensing a dose.