A guide for caregivers and whānau

When a family member is exploring or using medicinal cannabis, the people around them often carry a quiet load: getting to appointments, keeping track of doses, watching for side effects, and navigating a system that isn't always easy to understand. This guide is for caregivers and whānau supporting a patient — whether that's an older parent, a partner, or a young person under specialist care.

Your role at consultations

Patients often absorb only part of what's said in a medical appointment, especially when they're unwell or anxious. A trusted support person can:

• Take notes on the product, dose, how to titrate, and what to watch for.
• Ask the practical questions the patient might forget — about cost, driving, interactions and side effects.
• Provide history. You may remember treatments tried, timelines and reactions that the patient overlooks.
• Help weigh the decision afterwards, calmly and without pressure.

With the patient's consent, being present (in person or on a video call) makes the whole process steadier.

Helping with dosing

Medicinal cannabis works best with careful, consistent titration — "start low, go slow." A caregiver can make a real difference by helping keep a simple diary: the dose, the time taken, the effect, and any side effects. Patterns emerge quickly, and they're gold for the prescriber at the next review.

Practical dosing help includes setting reminders, measuring oil doses accurately (a small difference matters at low doses), respecting the onset window for oral products so the patient doesn't redose too soon, and timing sedating products for the evening rather than before activities like driving.

Never adjust the dose or switch products on your own initiative — changes should go through the prescriber.

Safe storage

This is one of the most important caregiver responsibilities, especially in homes with children or other vulnerable people. Medicinal cannabis products — particularly oils, capsules and anything that looks like ordinary food — must be stored:

• Out of reach and out of sight of children and pets.
• In their original, labelled containers, so there's no confusion about what they are or the dose.
• Securely, ideally locked away, given THC products are controlled drugs.
• According to the label for temperature and light.

Accidental ingestion by a child is a genuine emergency — if it happens, call the National Poisons Centre (0800 764 766) or seek urgent medical care immediately.

Watching for side effects

Around four in five people on a medicinal cannabis product get some side effect, so a caregiver's observation matters. Common, usually mild effects include drowsiness, dizziness, dry mouth, a faster heart rate and increased appetite. Be especially alert in older or frail patients, who are more prone to dizziness and falls.

Seek prompt help if you notice severe or persistent vomiting, chest pain, fainting, a severe panic reaction, or new confusion, hallucinations or paranoia that don't settle. People with a history of psychosis are at particular risk, and new psychiatric symptoms should be taken seriously.

Looking after yourself

Caregiving is demanding, and it's easy to neglect your own wellbeing. Lean on your support networks, share the load where you can, and don't hesitate to ask the clinic questions on the patient's behalf (with their consent). Organisations like Carers NZ and the NZ Drug Foundation offer support and reliable information.

Communicating with the clinical team

One of the most valuable things a caregiver does is act as a reliable bridge to the prescriber. With the patient's consent, you can relay the diary observations, flag side effects early, and ask the questions that come up between appointments. Clear, factual updates — "the evening dose is causing morning grogginess," or "pain relief seems better but balance is worse" — help the prescriber titrate accurately. Keep a single place (a notebook or a phone note) where doses, effects and questions all live, so nothing is lost between visits.

It also helps to clarify, early on, what the patient wants you to know and be involved in. Some patients want a caregiver fully across every detail; others want support with logistics but privacy around the clinical conversation. Agreeing this up front avoids friction later.

Supporting younger patients

When the patient is a young person under specialist care — for example a child with a rare epilepsy being treated with CBD — the caregiver role is even more central. You'll typically be the one administering precise doses, monitoring for effects and interactions (CBD can interact with anti-seizure medicines like clobazam and valproate, and liver-function monitoring may be needed), and coordinating closely with the specialist. Accuracy, consistency and meticulous record-keeping matter enormously here, and the specialist team should be your first port of call for any concern.

The bottom line

A good caregiver turns a medicinal cannabis trial from a confusing solo effort into a supported, well-documented process: present at consultations, careful with dosing and storage, observant of side effects, and connected to the prescriber. That support genuinely improves both safety and the chance the treatment helps — while you remember to look after yourself too.

Last reviewed 24 August 2026 — education, not medical advice. In an emergency call 111; for poisoning call the National Poisons Centre on 0800 764 766. Sources: bpacnz; NZ Drug Foundation.