A medical THC capsule dosage calculator turns a batch of cannabis into a milligram-per-capsule number. The core formula is total THC milligrams divided by the number of capsules filled. That number is an estimate, not a prescription, because oral THC absorbs at different rates in different people. Use it as a starting benchmark and confirm your dose with a clinician.
pharmaceutical cannabis capsule dosing
How do you calculate THC milligrams per capsule?
Multiply the weight of your cannabis in milligrams by its THC percentage. Multiply again by 0.877 if the THC is still in acid form (THCA), since decarboxylation converts only part of it. Divide the batch total by your capsule count.
Pharmaceutical Cannabis Capsule Dosing: How to Start Low and Titrate Right
Example: 1,000 mg of flower tested at 20% THC equals roughly 200 mg of THC. Filling 100 capsules gives about 2 mg of THC per capsule.
Cannabis Capsule Titration: How to Find Your Dose
- Weigh your starting material in milligrams.
- Multiply by the lab-tested THC percentage as a decimal.
- Multiply by 0.877 if the label lists THCA.
- Subtract an estimated 10% to 20% for infusion loss.
- Divide by the number of capsules you fill.
What factors change the real dose per capsule?
Homemade batches lose cannabinoids during decarboxylation, infusion, and straining, so the calculator usually overstates the final number. Carrier oil type matters too. A fatty oil such as MCT or olive oil improves absorption compared with a dry powder fill.
- Decarboxylation efficiency, commonly 70% to 90%
- Transfer loss left behind in the straining cloth or pan
- Fill accuracy when using a capsule machine
- Oral bioavailability, often cited between 4% and 20%
- Liver enzyme activity, body weight, and food in the stomach
What is a typical starting dose of THC capsules?
Many clinicians suggest 1 mg to 2.5 mg of THC for a first trial, especially for people new to oral cannabis. Experienced users often land between 5 mg and 10 mg per dose. Capsules take 30 to 120 minutes to take effect, peak around 2 to 4 hours, and can last 6 to 8 hours.
Wait at least 2 hours before taking a second capsule. Doubling up early is the most common cause of an uncomfortable experience. This information is educational and does not replace medical advice.
Why is a calculator only a starting point?
Two people can take the same capsule and feel very different effects because of genetics, tolerance, and liver metabolism. A calculator cannot measure your personal absorption rate. It also cannot account for interactions with prescription drugs.
How should you titrate THC capsules safely?
- Start with the lowest dose your product allows.
- Keep the dose steady for 3 to 5 days before increasing.
- Increase by small steps, such as 1 mg to 2.5 mg.
- Track the time, dose, and effects in a journal.
- Stop increasing once you reach the relief you need.
When should you talk to a clinician?
Speak with a physician or pharmacist before using THC capsules if you take blood thinners, seizure medication, sedatives, or immunosuppressants. Also check in if you have heart conditions, a history of psychosis, or you are pregnant or breastfeeding. Medical cannabis programs in most states require a qualifying condition and a valid recommendation.