Can CBD Oil Cause Headaches or Is It Something Else?

CBD oil has become a popular wellness supplement for supporting the mind and body. But if you’re new to CBD, you might be wondering: can CBD oil cause headaches?

The short answer: CBD itself is unlikely to cause headaches for most people. However, while CBD is generally considered safe, some users have reported adverse effects, including headaches, though these are rare. There are situations in which headaches may still occur—and they’re often linked to other factors, such as product quality, dosage, or individual sensitivity.

In this guide, we’ll break down what CBD is, its benefits, potential side effects, and the real reasons you might experience headaches after taking CBD oil. Anecdotal reports exist of individuals experiencing headaches after using CBD oil, but these are not conclusive and may be due to other factors. In rare cases, adverse side effects can occur, especially with poor-quality products or incorrect dosing.

What Is CBD Oil?

CBD (cannabidiol) is a natural compound derived from the hemp plant. It is non-psychoactive, meaning it does not alter consciousness or cause a “high” like THC.

CBD oil is typically extracted from hemp leaves and flowers using methods like CO₂ extraction, which is considered one of the cleanest and safest processes. The extraction process is crucial for product purity, as poor CBD extraction methods can leave residual solvents in the final product.

The CBD industry is largely unregulated, which can lead to variations in product quality and the presence of other cannabinoids or impurities in CBD oil.

One of CBD oil’s biggest advantages is its versatility. You can:

• Take it sublingually (under the tongue)
• Swallow it directly
• Add it to food or drinks

Although hemp is part of the cannabis family, it contains only trace amounts of THC (0.3% or less), making it federally legal in the U.S. under the 2018 Farm Bill. Depending on the product type, CBD oil may also contain other cannabinoids in addition to CBD.

Full Spectrum vs. Broad Spectrum CBD

CBD oil generally comes in two main types:

Full Spectrum CBD

Full Spectrum CBD contains all naturally occurring hemp compounds, including cannabinoids, terpenes, flavonoids, and trace THC. These compounds work together in what’s known as the entourage effect, potentially enhancing overall benefits.

Broad Spectrum CBD

Broad spectrum tinctures includes multiple cannabinoids and compounds—but without THC. This is ideal for people who want to avoid THC entirely.

What Are the Benefits of CBD Oil?

CBD is widely used for general wellness support. Research suggests that CBD oil may support overall well-being by influencing key physiological processes. While research is still ongoing, many users report the following benefits:

Versatility and Convenience

CBD oil can be taken in multiple ways depending on your preference:

• Oral ingestion: Effects may take 30–60 minutes but last up to 6–8 hours
• Sublingual use: Faster onset (around 15 minutes) with effects lasting 4–6 hours

Supports Physical Comfort

CBD interacts with the body’s endocannabinoid system (ECS), which plays a role in regulating discomfort and inflammation.

Promotes Better Sleep

Some studies suggest CBD may help improve sleep quality, especially in people dealing with stress or irregular sleep patterns.

Helps Manage Stress and Mood

CBD may support emotional balance by interacting with receptors involved in mood regulation.

Supports Appetite and Digestion

CBD may help regulate appetite and digestive function by interacting with the ECS.

What Are the Side Effects of CBD Oil?

CBD side effects are generally well-tolerated, but some users may experience mild adverse effects, especially at higher doses or with low-quality products:

• Dry mouth
• Fatigue or drowsiness
• Diarrhea
• Changes in appetite, including reduced appetite
• Mild digestive discomfort

These adverse side effects are typically mild and temporary, and serious adverse effects are rare according to clinical trials and research. Most users find that these CBD side effects do not outweigh the potential benefits, but it is important to consult a healthcare professional if you experience any concerning symptoms.

Can CBD Oil Cause Headaches?

CBD is not commonly associated with headaches. In fact, some evidence suggests it may help reduce headache or migraine frequency in certain individuals. Reports of CBD headaches are rare, and this side effect is considered uncommon.

However, responses to CBD can vary. Some users report experiencing headaches after taking CBD, which may be influenced by factors such as product quality, dosage, or individual sensitivity.

If you are experiencing headaches after using CBD, it is advised to stop using the product and consult a healthcare provider.

Why You Might Get a Headache After Taking CBD

If you notice headaches after using CBD oil, consider these possible causes:

• High doses: Taking high doses of CBD is more likely to cause side effects, including headaches. Starting with a low dosage of CBD is recommended to monitor individual responses and minimize side effects, as high doses can increase the risk of adverse effects.
• Lower quality products: Lower quality products may contain impurities or additives that can cause adverse reactions like headaches. In contrast, high-quality CBD products are carefully processed and tested for purity, reducing the likelihood of such issues.
• Dehydration: Hydration is important when using CBD, as dehydration is a common trigger for tension-type headaches. Certain CBD products can cause dry mouth or overall dehydration, which may contribute to headaches. Hydration levels can influence the likelihood of experiencing headaches when using CBD oil.
• Blood vessels and low blood pressure: CBD may cause mild vasodilation by widening blood vessels, which can trigger vascular headaches in susceptible individuals or contribute to low blood pressure. People with pre-existing low blood pressure should use caution, as CBD oil can further lower blood pressure and increase the risk of dizziness or fainting.
• Caffeine withdrawal-like symptoms: Some users may experience symptoms similar to caffeine withdrawal, such as headaches, when using certain CBD edibles or capsules due to changes in chemical intake and metabolism.

Gummies and Other Products

CBD gummies and other edible CBD products have garnered significant attention for their convenience and enjoyable flavors, making them a popular choice among both new and experienced CBD users. These gummies offer a simple way to incorporate CBD into your wellness routine, as each piece typically contains a precise, pre-measured dose of this naturally occurring compound found in cannabis plants. This makes it easier to manage your dose and track how your body responds over time.

However, it’s important to understand that ingesting CBD oil through edibles like gummies results in lower bioavailability compared to methods such as sublingual tinctures. Because the CBD must pass through your digestive system before entering the bloodstream, some of the compound may be broken down or lost along the way, potentially leading to milder effects or a delayed onset.

Research and Studies on CBD and Headaches

The relationship between CBD and headaches is an area of growing interest within the CBD industry, but current research is still in its early stages. While there are limited clinical trials specifically examining whether CBD oil can cause headaches or help relieve them, several studies have explored the broader effects of CBD products on pain management and neurological health.

For example, a 2018 review in Frontiers in Pharmacology highlighted CBD’s potential benefits for various types of pain, including chronic and inflammatory pain, suggesting that CBD acts on the endocannabinoid system to influence pain perception and inflammation. Another study published in Epilepsy & Behavior found that CBD reduced the frequency and severity of epileptic seizures, which are sometimes accompanied by headaches, further supporting the idea that CBD may impact neurological processes.

Can CBD Oil Help with Headaches?

Emerging research and user reports suggest that CBD may help with headache-related symptoms, particularly those linked to tension or inflammation. In fact, research suggests that CBD may have properties that could alleviate certain headache symptoms, though more studies are needed for definitive conclusions.

If you’re considering CBD for headaches, it’s best to:

• Start with a low dose (it's recommended to start with a small dose of CBD oil and gradually increase it as needed)
• Choose high-quality products
• Monitor how your body responds

Supporting overall well-being is one potential benefit of CBD oil.

How to Choose High-Quality CBD Oil

Not all CBD products are created equal. The extraction process used to make CBD oil plays a key role in determining the product's purity and safety. Poor extraction methods can leave behind residual solvents or other impurities, which may increase the risk of adverse effects like headaches. Here’s what to look for when choosing a reliable option:

Look for Third-Party Testing

High-quality CBD products, like those we offer, are carefully processed and tested for purity, reducing the likelihood of residual solvents or contaminants. Lower-quality products, on the other hand, may contain impurities due to poor extraction methods. Please always check the Certificate of Analysis (COA) to make sure the product has been tested for residual solvents and other contaminants. This helps ensure you are choosing a safe and effective CBD oil.

Certificate of Analysis (COA)

Always check for third-party lab testing. A COA confirms:

• CBD potency
• THC levels
• Absence of contaminants

Clean, Natural Ingredients

Avoid products with unnecessary additives, artificial flavors, or preservatives.

Hemp Source

U.S.-grown hemp is subject to stricter regulations and quality standards.

Transparent Customer Reviews

Authentic reviews can provide insight into a product's effectiveness and a company's reliability.

Frequently Asked Questions (FAQs)

Can CBD oil trigger migraines?

CBD oil is not known to trigger migraines in most people. In fact, some early research and user reports suggest it may help reduce migraine frequency. However, individual reactions vary, and factors like low-quality products or incorrect dosage may contribute to discomfort.

How long does CBD stay in your system?

CBD can stay in your system for 2 to 5 days on average, but this depends on factors like dosage, frequency of use, metabolism, and body composition. Regular users may retain CBD longer than occasional users.

What does a CBD headache feel like?

If someone experiences a headache after taking CBD, it’s usually mild and may feel similar to a dehydration or tension headache. This is often linked to external factors like dry mouth, dehydration, or additives in the product—not CBD itself.

Final Thoughts: Can CBD Oil Cause Headaches?

CBD oil is generally safe and well-tolerated, with headaches being an uncommon side effect. If headaches do occur, they’re more likely linked to factors like product quality, dosage, or individual sensitivity. Adverse effects are more likely when using poor-quality products or taking excessive amounts.

If you have concerns or underlying health conditions, it’s always best to consult a healthcare professional before starting CBD.

Learn more about CBD

Author Bio

Olivia Richman Writer

Olivia connects industry trends with practical advice to simplify your choices.