Key Takeaways
- Start with a small dose of THC and adjust gradually based on how you feel, following your doctor’s guidance.
- Factors like symptoms, medications, and tolerance can affect how THC works for you.
- Pharmacists can help you use medical cannabis safely, explain side effects, and check for medication interactions.
Getting the right THC dose can make or break your cannabis experience. Too much and you may feel overwhelmed. Too little and you won’t get the relief you’re after. Here’s how to find your ideal dose safely and effectively.
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What Is THC?
Tetrahydrocannabinol (THC) is the compound in cannabis that creates that intoxicating “high” feeling. Many find that THC also helps relieve symptoms like nausea, vomiting, and appetite loss, especially for people undergoing chemotherapy or dealing with AIDS-related anorexia.
THC causes its effects by binding to CB1 receptors in the brain, which help control mood, appetite, and pain. It also interacts with CB2 receptors, which may reduce inflammation and muscle spasms.¹
While THC may help with symptoms, too much of this potent cannabinoid can cause side effects like anxiety, paranoia, or even hallucinations. Some users may also experience dry mouth, headaches, or feelings of sedation or euphoria.¹
In rare cases, long-term use can lead to cannabinoid hyperemesis syndrome (CHS), a condition that causes cycles of nausea, vomiting, and stomach pain. Hot showers often work better than standard anti-nausea meds for relief.¹
The Best Strategy for Finding the Right THC Dosage
Most doctors suggest that patients begin with one or two vaporizer inhalations, or 2.5mg to 5mg of THC if taken orally, then adjust based on how you respond. If the dose feels too strong or isn’t helping, contact your doctor right away to make changes. Always follow your doctor’s instructions and keep them updated on how you’re feeling.
Factors That Influence THC Dosing
Several factors can influence how THC works for you:
- Symptoms: Severe conditions like chronic pain may require a higher THC dose where seizures may require a higher CBD dose, for example.
- Medications: Some drugs can interact with THC, so check with your doctor before combining treatments.
- Body weight and metabolism: Heavier individuals or those with faster metabolisms may process THC differently.
- Tolerance: Regular users may need more THC than beginners to feel the same effects.
Dosing Cannabis Flower
In the UK, medical cannabis flower is consumed through vaporisers since smoking raw cannabis flower is illegal for any use. Many physicians start patients with one or two puffs from a vaporiser, then recommend waiting 15-20 minutes to assess the effects. This method allows for better control over your intake compared to other forms of consumption.
Your prescribing doctor will give you specific dosing instructions based on your needs. Always follow their advice, let them know how you’re feeling, and don’t change your dose without talking to them first.
Dosing Cannabis Oils
Cannabis oils are a popular choice for those who prefer not to inhale. They come in different strengths, so it’s important to start with a low dose, often just a couple of drops, and increase slowly if needed. Your doctor or pharmacist will give you clear instructions on how much to take and how often.
Oils offer more consistent dosing than flower, but they can take up to two hours to work, so be patient and give them time to take effect before having another dose.
The Importance of Talking to Your Clinical Team
In the UK, your prescribing team can help you use medical cannabis safely. While your doctor will prescribe the medication, your clinical team is there to:
- Explain how to use it: They’ll explain how to take your cannabis oil or use your vaporiser correctly.
- Check for interactions: For example, they can let you know if THC might interact with other medications you’re taking, like blood thinners or sedatives.
- Answer your questions: They can help you understand potential side effects and what to do if you experience them.
Your clinical team can also explain the difference between THC and CBD. While THC might cause side effects like anxiety, CBD might help ease those without making you feel intoxicated.
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The information in this article and any included images or charts are for educational purposes only. This information is neither a substitute for, nor does it replace, professional legal advice or medical advice, diagnosis, or treatment. If you have any concerns or questions about laws, regulations, or your health, you should always consult with an attorney, physician or other licensed professional.
