Side Effects of CBD Oil: How safe is it?

Over the last few years, CBD oil has steadily gained popularity. The once demonized and grossly misunderstood cannabis derivative has successfully transformed the lives of many people with its host of medicinal benefits and therapeutic uses. Right from instances of mild to severe pain, glaucoma, to more potent disorders such as epileptic seizures and rheumatoid arthritis, CBD oil has a lot to offer its users.

Marijuana, on the whole, is considered to be a safe substance since it does not necessarily cause you any long-term, serious harm. Even in the recreational context, one cannot possibly overdose on marijuana, making it a safe option among many others. What’s even more critical to understand is that pure CBD oil is entirely free from the high-inducing cannabinoid THC. It is not psychoactive at all. All in all, you cannot get high off of pure CBD oil.

While an adult human cannot virtually consume a fatal CBD oil dose, too much of the substance can cause some unpleasant side effects. Just like too much of anything is terrible, too much of CBD oil can cause more harm than help.

Another essential thing to consider is that all bodies are unique. What works for some, may not have the same impact on others. Even while using CBD oil, it is necessary to understand that your body will respond uniquely to the substance. While thousands, if not millions, have reported significant benefits from using CBD oil, there are still some cases where people have experienced nasty side effects.

The Side Effects of CBD Oil 

As we’ve mentioned before, different substances respond or react differently in our bodies. If you’re looking at taking CBD oil for any ailments, disorders or even as a dietary supplement to enjoy its benefits, it makes sense to understand the possible risks. There are no significant health risks when it comes to CBD oil, but you may feel some unpleasant side effects in some cases.

Most of the side effects caused by CBD oil consumption can be linked to higher doses, low-quality products or other such factors. The usual side effects last anywhere between a few minutes to a couple hours at most. With that being said, it is wise to learn about any potential side effects or risks associated with CBD oil usage before incorporating it into your daily supplement closet.

Here is a comprehensive list of the possible side effects that accompany CBD oil consumption.

Drowsiness or Sleepiness

Large doses of CBD oil are known to help people who are battling conditions like anxiety, insomnia or sleeplessness caused by stress. The cannabinoid is a substance reputed for producing a sense of deep relaxation, diminishing anxiety and promoting sleep. This is why should come as no surprise that ingesting large doses of CBD may cause sleepiness or drowsiness.

While CBD’s calming effect brought on by a larger dose is excellent for making you fall asleep, relax you or calm you down, it may be a downside when you’re looking at remedying some other ailment.

If CBD oil is causing you to feel drowsy or sleepy, the first thing to do is reduce your dosage. Potency and quantity of the CBD oil you consume have a massive role in determining whether ingesting it will make you drowsy. If you’re new to CBD oil, start small to prevent this side effect. Since CBD oil can take some time to kick in, ensure that you schedule your doses so as not to interfere with tasks that demand mental alertness.


A frequent topic of debate among CBD oil user circles is whether or not CBD oil causes headaches. On the one hand, CBD oil is a popular remedy used to treat and manage migraines or chronic headaches. On the other hand, some people report experiences headaches as a side-effect of ingesting CBD oil.  Even when you factor in how our bodies all respond differently to CBD oil, recurring pain upon ingestion could be saying something about your choice of product.

Usually, cheap CBD oil products of inferior quality are to blame for such headaches. Products that contain unpleasant solvents like isopropanol or ethanol are typically found to cause headaches among people who with sensitive bodily systems. In such scenarios, it is best to switch to a CBD oil from a brand that offers you higher-quality, organic, solvent-free alternatives. With that being said, some people’s bodies are just not able to process CBD oil in a way that provides them with relief from their symptoms, but instead causes headaches.

If you notice that even a high-quality, reputed CBD oil brand doesn’t stop your headaches, CBD oil may not be for you. Yes, there are some people whose bodies don’t agree with CBD oil.

Dry Mouth (Cotton-mouth)

Most commonly associated as a side effect of smoking marijuana, even CBD oil is known to give users a dry mouth. Initially, this phenomenon of a sticky mouth and persistent thirst was accredited to the harshness of cannabis smoke and its effects on the lining of the mouth, nose and throat. However, even CBD oil ad its variety of products, which is not something you smoke, has the same effect in some cases.

Cotton-mouth occurs in response to the effect that cannabinoids have on the salivary glands. The body’s endocannabinoid system acts on receptors located in the submandibular salivary glands, located under the jaw bone. When the endocannabinoids in this area are activated, saliva production gets disrupted, and the nervous system doesn’t receive the message to keep producing saliva, leading to dry mouth and the feeling of thirst.

A little feeling of thirst and instances of mild dry mouth can easily be tackled with the consumption of water on a regular basis. Sipping water in the immediate aftermath of ingesting CBD oil will certainly help. Tobacco is also known to dehydrate your mouth and affect the production of saliva. If you’re keen on avoiding dry mouth when you ingest CBD oil, cutting out tobacco, alcohol, caffeine and sugary drinks can go a long way.

Nausea or Vomiting

While there are no conclusive reports that link nausea or vomiting to CBD oil, some individuals have reported mild to moderate stomach discomfort in their reviews. Again, we have to consider the fact that different substances have different effects on our bodies. This can explain why CBD oil, a product that can aid in relieving nausea and preventing vomiting, might have the opposite effect on some people.

Smaller doses of CBD oil usually do not cause this unpleasant sensation. So if you do end up feeling nauseous after ingesting CBD oil or any of its products, you should first start by decreasing your dosage. This usually helps in combating the problem. However, if the problem persists, you can try a different CBD oil brand that is less potent, or that contains oil derived from a different strain.

Lowered Blood Pressure Rates

Studies show that CBD oil has many cardiovascular benefits to offer its users.  One of the most notable advantages is reduced blood pressure in response to stress. While this is great for people who are looking for relief from the symptoms of high blood pressure and hypertension, it may lead to unwanted side effects for some people. Ingesting significantly bigger doses of CBD oil can often cause small drops in blood pressure among some individuals. This is even more pronounced in the case of individuals with a lower blood pressure rate.

The side effect of a lowered blood pressure caused by CBD oil can usually be felt a few minutes after the cannabinoid enters your system. It is important to note that this drop in pressure is very mild and not so severe that you will pass out or become unconscious. At most, you’ll experience slight drowsiness or light-headedness. However, if you’re on medication for your blood pressure, there could be severe side effects that may occur when the CBD oil interacts with the pharmaceutical, chemical medications.

If you’re on medication for any blood pressure related issues, it is recommended to speak to your doctor before starting with CBD oil supplements.

Lightheadedness or Dizziness

Another very real and unpleasant, yet manageable side-effect that occurs in some cases of CBD oil use is dizziness or light-headedness. These are also symptoms of a drop in blood pressure as mentioned above.

Even if you don’t exactly have problems with low blood pressure or feeling faint, some people report feeling drowsy or light-headed after consuming CBD oil. The main reason for this is that the cannabinoids present in the product influence the body’s endocannabinoid system in a way that may cause a few minutes of dizziness. The dizziness caused by the product usually passes away quickly, often in a few minutes. You can speed this process by sipping a warm beverage like tea or coffee or snacking on a piece of fruit handful of nuts or piece of chocolate.

Increased Tremors among Those Suffering from Parkinson’s Disease

Parkinson’s disease is a degenerative disorder that causes a loss of dopamine-producing neurons in the brain. Eventually, the disease can lead to an impairment of the body’s motor function and cause muscle tremors. However, cannabinoids present in CBD oil can help in the management of this disease thanks to its anti-inflammatory, neuro-protectant and anti-oxidant properties. By working on the body’s endocannabinoid system, many Parkinson’s patients see an improvement in their overall quality of life with CBD oil.

Early research conducted on the effectiveness of CBD oil for treating Parkinson’s disease suggested that high doses of the substance may worsen the muscle tremors associated with the disease. However, some recent research indicates that CBD oil may help to manage these muscle tremors. Again, owing to the difference in the way our bodies process substances, there are a wide variety of possibilities that may occur. Many factors such as age, medical history or current medications might influence the way the cannabinoids in CBD oil affect your body.

For this reason, we advise talking to your doctor before incorporating CBD oil in your arsenal in managing Parkinson’s disease.

Do Read: Can CBD Get you High?

Reactions as a Result of Being Combined With Pharmaceutical Medication

Yes, CBD oil is a relatively safe substance to use as a dietary supplement. However, an essential thing to understand is that there is still a slight chance of an adverse reaction where CBD oil can interfere with any pharmaceutical medication you might be taking.

P450 enzymes in the liver are the key enzymes responsible for breaking down pharmaceutical drugs in the human body. The way that CBD oil interacts with the body’s endocannabinoid system might inhibit the activity of these enzymes, interfering with the absorption of these drugs. In high doses, CBD oil can neutralize enzyme activity in this area. Although this effect doesn’t last for a prolonged period, it could cause severe problems for people with on medication for serious disorders or diseases.

In some cases, CBD is also known to interfere with the breakdown of some anti-epileptic drugs in the body.  While it is also an effective treatment for managing epileptic seizures, the fact that the product can interfere with medication requires an expert’s opinion before being included in your treatment plan.

For this reason, it is always recommended to consult your doctor before adding CBD oil into your diet, especially if you are on medication of any kind.

The Bottom Line

CBD oil has so much to offer when it comes to disorders like anxiety, mild depression, PTSD, sleep issues, insomnia, cardiovascular issues, chronic pain, glaucoma and many others. The product has become widely accessible after becoming legalized across the country, and we see more and more people incorporating CBD as a dietary supplement into their daily routines.

However, it is necessary to consult a medical professional before doing so, especially in case you have any serious medical issues. While CBD has found a way to help millions across the globe in their quest for a healthier life, it is not some magical potion you can chug anytime. By asking for the right information and considering risks, you’ll be able to make the most of your CBD experience.

Leave a Reply