How to Use Cannabis Oil: The Complete Guide

Alternaleaf Team
Written by
Alternaleaf Team
Jan 20, 2025
Last updated:
Jan 20, 2025

The cannabis plant is complex, with 500+ chemical compounds and over 100 cannabinoids. You’ve probably heard of Tetrahydrocannabinolis (THC) and Cannabidiol (CBD). They’re two natural cannabinoids that you’ll see a lot when researching medical cannabis.

THC is psychoactive, so can be behind that ‘high’ feeling cannabis is sometimes associated with. CBD is non-physioactive, meaning it won’t make you feel “high”. 

Various methods are used to separate CBD and THC. For example mixing cannabis with a solvent to dissolve the plant, form a solution, and draw out the cannabinoids. The solvent is then evaporated to leave the elements you want behind. CBD and THC can then be added to a carrier oil, like olive, coconut or hemp seed to create THC oil and CBD oil, just two types of cannabis oil. 

Some conditions and symptoms may benefit more from a combination of CBD and THC. This is known as the entourage effect. When these compounds work together, they can provide targeted and enhanced therapeutic effects.

We’ll be exploring some cannabis oil usage methods below. You never know, it may help you decide if medical cannabis is something you want to explore. And if it is, why not check out the Alternaleaf website and see if you’re eligible for treatment. 

How to Use Cannabis Oil

Medical cannabis is available in many different forms, and effects and experiences can vary with each type. Your clinician will run through different consumption methods, and work with you to decide what is best for you. They’ll be able to tailor treatment to your individual needs, and if you have any preference, or questions about the below, it’s best to speak to them. 

Sublingual (Under the Tongue)

Placing cannabis oil or tincture under the tongue allows for quick absorption into the bloodstream. This results in a fast onset, usually within 15 to 30 minutes, and tends to provide longer-lasting relief when compared to inhalation. It’s also discreet and you can easily control dosage.

Ingestion (Edibles and soft gels)

Cannabis-infused ‘edibles’ have a slower onset, usually between 1 to 2 hours, but are ideal for stronger and longer-lasting relief. The effects can last anywhere between 4 to 24 hours. 

Some people also prefer to add cannabis oil to food and drinks and ingest that way as it can hide the flavour. However, only do this after discussing with your doctor. They’ll advise whether or not this is a good idea, and what you should do. Capsules and pills are also a good form to ingest as they are pre-dosed and convenient. 

Topical Application

Applying cannabis oil directly to the skin targets pain and inflammation. This method is great for people who want relief from conditions like arthritis or muscle pain, without the need for inhalation or ingestion. 

Please note, you should only ever apply a medication topically if it has been advised by your doctor. Currently all medical cannabis products available for prescription are for consumption via inhalation or sublingually only. 

If you’re looking for a cannabis oil dosage guide, we have some great information here

Potential Risks and Side Effects

Although side effects are rare, medical cannabis comes with potential risks just like any other medication. This can include: 

  • Dizziness and Lightheadedness: This happens more for new users due to its impact on blood pressure and the central nervous system. 
  • Dry Mouth: Cannabis can reduce saliva production. 
  • Increased Appetite: Commonly referred to as the "munchies". 
  • Red Eyes: Cannabis can cause blood vessels in the eyes to expand due to its impact on blood pressure and circulation. 
  • Fatigue and Drowsiness: It’s a good idea to avoid activities that require alertness after consumption if a specific form or strain makes you feel drowsy.

These side effects can vary depending on THC and CBD content, the method of consumption you choose, your past use, physiology and health condition. And remember that medical cannabis can affect everyone differently. Someone else's experience may not be the same for you. 

Your doctor will explain this in detail ahead of prescribing any medication, so don’t worry too much. And as always, we recommend starting low and going slow so you can check for any unwanted effects. You should not use cannabis oil if you’re pregnant, and avoid using it if you’re on any other medication. You can always check with your clinician if you’re ever unsure. 

Summary

Whilst there are risks, there are also potential benefits of cannabis oil. Your specialist doctor or pharmacist will be able to talk through the best dosage and method of administration for you. But it never hurts to do your own research. There’s lots of help and information on the Alternaleaf website, and we’re always here to answer any questions you may have. 

If you’re suffering from chronic pain, anxiety, depression, ADHD and more, it may be worth beginning your journey with Alternaleaf, so you can start moving towards a better you, today.