RSO (Rick Simpson Oil) is one of the most powerful cannabis extracts available — and that means dosing matters more than ever. A drop too much can lead to hours of unwanted side effects, while the right amount can deliver balanced, steady results.
If you’ve ever wondered, “How much RSO should I take?” — this guide will help you figure it out with simple math, clear visuals, and a safe 30-day plan for finding your ideal dose.
Why Proper Dosing Matters
Unlike CBD oil or edibles, RSO is a full-extract, high-THC oil. It’s designed for slow, careful use. A typical 1-gram syringe of RSO contains 600–900mg of THC, meaning each rice-sized drop can hold 20–25mg of THC or more.
That’s potent — so even a small change in dosage can make a big difference in your experience.
Step 1: Understand the Basics
Let’s break it down:
-
1 gram (g) = 1,000 milligrams (mg)
-
If your RSO has 70% THC, that means:
→ 1,000mg × 0.70 = 700mg of THC per syringe
-
A single drop (about 1/30th of a syringe) = ~23mg THC
This is why most beginners start with a dose no bigger than half a grain of rice.
Step 2: How to Use the RSO Dosage Calculator
If your RSO syringe lists potency, you can calculate your ideal dose with this simple formula:
(THC % × 1,000) ÷ desired daily dose (mg) = number of doses per syringe
Example:
Your RSO is 70% THC, and you want a 10mg dose.
→ (700 ÷ 10) = 70 doses per syringe
That means each syringe should last roughly 70 days if you’re microdosing 10mg daily.
Step 3: The 30-Day RSO Starter Schedule
If you’re new to RSO, start small and go slow. This 30-day plan is adapted from Rick Simpson’s original regimen and adjusted for modern products:
|
Day Range |
Daily Amount |
Approx. THC (mg) |
Notes |
|---|---|---|---|
|
Days 1–3 |
½ rice grain |
10–12mg |
Observe tolerance |
|
Days 4–7 |
1 rice grain |
20–25mg |
Split into two doses (AM/PM) |
|
Week 2 |
1.5 rice grains |
30–35mg |
Gradually increase |
|
Week 3 |
2 rice grains |
40–45mg |
Maintain consistency |
|
Week 4 |
2.5–3 rice grains |
50–60mg |
Optional increase if tolerated |
💡 Pro Tip: Keep a small “RSO Journal” — note what time you take your dose, how you feel, and how long effects last. Tracking helps you find your sweet spot faster.
Step 4: Finding Your Tolerance Level
Everyone’s endocannabinoid system is unique. Here’s how to gauge your tolerance:
|
Experience Level |
Recommended Starting Dose |
Frequency |
|---|---|---|
|
Beginner |
5–10mg |
Once daily |
|
Intermediate |
10–25mg |
Once or twice daily |
|
Advanced |
25–50mg |
Twice daily |
If you feel dizzy, anxious, or overly sedated, lower your dose immediately. Effects may take up to 90 minutes to fully kick in, so be patient before increasing.
Step 5: Oral vs. Topical vs. Edible Dosing
-
Oral ingestion: Slow onset (45–90 mins), lasts 6–8 hours.
-
Sublingual (under tongue): Quicker onset (30–45 mins).
-
Topical: Non-psychoactive; used for localized support.
-
Edible infusion: Long-lasting but harder to measure precisely.
When using RSO for oral or edible purposes, always mix with a carrier oil (like olive or coconut) to improve absorption.
RSO Microdosing Chart (Quick Reference)
|
Drop Size |
THC (approx.) |
Use Case |
|---|---|---|
|
¼ grain |
5–8mg |
Microdose / beginner |
|
½ grain |
10–12mg |
Light dose |
|
1 grain |
20–25mg |
Standard dose |
|
2 grains |
40–50mg |
Experienced users |
|
3 grains |
60–70mg |
Advanced use only |
When to Take RSO
Timing depends on your purpose and lifestyle:
-
Morning: Low dose for daytime focus or calm.
-
Evening: Higher dose for sleep or deep relaxation.
-
Split Dosing: ½ in the morning, ½ at night for steady effects.
Always avoid driving or operating machinery for several hours after consuming RSO.
Common Dosing Mistakes to Avoid
-
Taking too much too soon.
-
Not checking THC % before dosing.
-
Mixing RSO with alcohol or other sedatives.
-
Forgetting to track your doses.
-
Storing RSO in heat or sunlight (which degrades potency).
FAQs About RSO Dosing
Q: How long does RSO take to kick in?
Typically 45–90 minutes, depending on metabolism and whether you ate beforehand.
Q: Can I use RSO every day?
Yes, but it’s best to start with one small dose daily and slowly build up tolerance.
Q: What if I take too much?
You might feel sleepy, dizzy, or anxious. Rest, hydrate, and wait it out — effects will fade naturally in a few hours.
Q: Can I use RSO topically instead of ingesting?
Yes, though it may not absorb as deeply. Topical use is non-intoxicating.
Final Thoughts
Finding your ideal RSO dosage is a personal journey — not a race. Start small, track your results, and adjust gradually. With time, you’ll discover the balance that fits your needs and comfort level.
When you’re ready to dive deeper, explore our related guides:

