This article covers how legal access works in Australia, what medicinal cannabis is commonly prescribed for, and what your pharmacist's role looks like if you're prescribed it.

How legal access works in Australia 

Medicinal cannabis is legal in Australia under a regulatory framework overseen by the Therapeutic Goods Administration (TGA). It is not freely available and requires a prescription from a registered medical practitioner.

Most medicinal cannabis in Australia is prescribed through the TGA's Special Access Scheme (SAS-B pathway), which allows doctors to prescribe unapproved products to individual patients. In practice, this means your GP or specialist can prescribe medicinal cannabis without needing to seek individual TGA approval for each patient, as long as the product is from an approved manufacturer.

Some products have received formal TGA registration, nabiximols (Sativex) for spasticity in multiple sclerosis being one example, but the majority of medicinal cannabis products in Australia are still prescribed via the SAS-B route. 

What it's commonly prescribed for

Medicinal cannabis is most frequently prescribed in Australia for chronic non-cancer pain, chemotherapy-induced nausea and vomiting, anxiety, sleep disorders, epilepsy, and palliative care.

The strength of evidence varies considerably across these conditions. The clearest evidence exists for specific forms of epilepsy, particularly childhood epilepsy syndromes like Dravet syndrome, where cannabidiol (CBD)-based medications have shown meaningful benefit in clinical trials. The evidence base for chronic pain is growing, with a number of well-designed studies supporting its use as an adjunct for patients who haven't responded to other treatments.

For anxiety and sleep, the evidence is promising but still emerging. This doesn't mean these aren't valid uses. It means the research is ongoing, and honest prescribers will frame it that way.

CBD vs THC: what the difference means in practice 

Medicinal cannabis products vary significantly in their composition. The two primary active compounds are cannabidiol (CBD) and tetrahydrocannabinol (THC), and they behave quite differently.

CBD is non-psychoactive. It doesn't produce a high, and it's generally well tolerated. It's the primary compound in products used for epilepsy, and it's commonly used for anxiety and pain.

THC is the psychoactive component. In medicinal use, it's often combined with CBD in varying ratios depending on what the prescriber is targeting. Products with higher THC content carry a higher risk of side effects including cognitive impairment, anxiety, and dependence with long-term use. They also affect your ability to drive, which is a practical consideration patients don't always have explained clearly: you cannot legally drive while under the influence of THC-containing products, regardless of whether you have a prescription.

Products are typically available as oils (taken sublingually), capsules, or dried flower for vaporisation. Your prescriber and pharmacist should help you understand which form and ratio is appropriate for your situation.

What your pharmacist should be doing

Medicinal cannabis sits in a category where pharmacist involvement is vital. A good pharmacist should be reviewing your full medication list for potential interactions. CBD in particular can affect the metabolism of several commonly prescribed drugs, including some anticoagulants and antiepileptics. They should be counselling you on dosing, timing, storage, and what to watch for in terms of side effects, and they should be someone you can contact with follow-up questions.

How Ace supports patients using medicinal cannabis

Ace pharmacists are trained in medicinal cannabis and can provide the counselling, monitoring support, and ongoing access that this medication category requires. We can help you understand what you've been prescribed, check your regimen for interactions, and make sure you know what to expect.

If you've been prescribed medicinal cannabis and want to ensure you're supported properly, visit us at https://portal.acepharmacy.com.au.

This article is for general educational information only and does not constitute medical advice. Medicinal cannabis is a prescription medication and should be discussed with your doctor or specialist. Laws and evidence in this area continue to evolve.