Cannabis Dosing and Administration

One of the most frequently asked questions from Medical Cannabis users is “How do I know my dose?”

Cannabis is a very personal Medicine and the first thing to have in mind is that dosage will vary from person to person. It depends on many aspects such as:

  • Patient’s Weight.
  • Patient’s Age.
  • Patient’s Metabolism.
  • Type of product.
  • Patient’s Endocannabinoid System.
  • Patient’s Condition.

Prescription Glossary

When using your Medical Cannabis prescription, it’s important to learn the terminology to understand the dosing instructions.

PRN = As required

BD = Two times per day

TDS = Three times per day

QID = Four times per day

Nocte = Night

Q2H = Every two hours

Q10 Mins = Every ten minutes

Titration – Gradual adjustment

Micro dosing

People falsely believe that a big dose is necessary to relieve their symptoms faster. When consuming Medical Cannabis products, low doses can be immensely effective. Here at CDA, we say, “Start low and go slow”, slowly titrating the patient’s Medicine until they have found their effective dose.

The biphasic effect:

Low and high doses of the same substance can produce opposite effects. Small doses of Cannabis tend to stimulate, while large doses tend to sedate.


During your consultation with Cannabis Doctors Australia, you’ll be prescribed with the best product option for your condition. Our Doctors and Nurses will provide you with a treatment plan and customised dosing schedule guides.

You can find your suggested dosing in your script and label provided by the pharmacist. If you have further questions regarding your product dosing, we recommend you contact your pharmacist, or discuss it during your follow up appointment with us.


Titrating THC vs Titrating CBD

THC and CBD Medicine properties are not the same and when titrating the patient must keep this in mind and adjust accordingly. When consuming THC medical products, cautious titration is urged. One’s sensitivity to THC is a key factor is determining the optimal dose.

The goal during your treatment is to find your optimal dose using slow titration techniques, resulting in the minimum effective dose.

Drop vs Dropper


How’s Medical Cannabis Consumed?


Inhaled / Vapourising (rapid absorption)

When inhaling, the active ingredients are absorbed almost immediately into your bloodstream through the lungs.

The effects can be felt within 10 minutes and generally lasts between 2-4 hours.

This administration technique is ideal for managing acute symptoms.


Oral Ingestion (slow absorption)

It’s important to ‘’Start Low & Go Slow’’ when ingesting Cannabis because the effects can be a lot stronger and longer-lasting when ingested.

It can take 90 minutes to absorb the active ingredients with a longer effect of 4-8 hours.

This administration technique is ideal for managing chronic (long-lasting) symptoms.



What if I have too much THC?

When a patient becomes very sick from THC Cannabis, it’s known as “Greening out”. This is usually THC dose-related and happens to people who aren’t used to Medical Marijuana or are using larger amounts than usual. The symptoms of a THC overdose are very temporary, and you’re more likely to fall asleep then experiencing any harmful effects. THC is non-toxic and has never directly caused a death. If you’d like to find out more please click here.


Disclaimer: This is not an inducement to use Medicinal Cannabis. Medical Cannabis doesn’t work for everyone, and it may not work for you. How Cannabis affects a person depends on many things, including their size, weight, age and health, dosage and tolerance, and the results can vary. Some people may experience side effects when taking Cannabinoid medication. The information provided by CDA Clinics is for educational and informational purposes only. For medical advice, please check with your doctor and request a referral. 

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