CBD and THC are two of the main compounds found in cannabis. Both can be used in medicinal cannabis products, but they have different effects.
CBD (Cannabidiol)
CBD does not generally cause the intoxicating “high” associated with cannabis.
Key points:
- Does not generally cause intoxication
- Used in some medicinal cannabis medicines
- May still cause side effects
- Can interact with other medicines
- Therapeutic CBD products in New Zealand require a prescription
THC (Tetrahydrocannabinol)
THC is the compound mainly responsible for the psychoactive effects of cannabis.
Key points:
- Can cause intoxication
- May affect concentration and coordination
- Can cause drowsiness or dizziness
- May impair reaction time
- Is used in some prescribed medicinal cannabis products
CBD vs THC at a Glance
| CBD | THC |
|---|---|
| Generally non-intoxicating | Can be intoxicating |
| Used medicinally | Used medicinally |
| Can have side effects | Can have side effects |
| May interact with medicines | May interact with medicines |
| Prescription medicine in NZ | Controlled prescription medicine |
Can CBD and THC Be Used Together?
Yes. Some medicinal cannabis products contain a combination of CBD and THC.
The appropriate product depends on factors such as:
- The condition or symptoms
- Previous treatments
- Other medicines being taken
- Potential side effects
- Individual response
A healthcare professional can determine whether CBD, THC or a combination may be appropriate.
THC and Driving
THC can affect concentration, coordination and reaction time.
Patients using THC-containing medicinal cannabis should understand New Zealand’s drug-driving requirements and discuss driving with their healthcare professional.
A prescription does not mean it is safe to drive while impaired.
Which Is Better?
Neither CBD nor THC is automatically “better.”
The appropriate option depends on the individual, medical condition, available evidence, product and potential risks.
For related information, read:
Potential Benefits of Medicinal Cannabis
Medicinal Cannabis Side Effects and Risks
Official Information
For official information, visit the New Zealand Ministry of Health — Medicinal Cannabis information for consumers.
Important
This information is for general educational purposes only and is not medical advice. Always discuss medicinal cannabis, side effects and possible medicine interactions with a qualified healthcare professional.
