Why does CBD oil cause a headache

Possible side effects of CBD

CBD is very popular in Germany because it is a natural product and it can be used legally. Many effects are ascribed to cannabidiol, but the scientific proof of these effects has not yet been provided. Still, many people use cannabidiol for their well-being. However, there are also some people who have so far preferred to hold back. The reason for this is the question of whether CBD doesn't also have side effects. People who have to take medication regularly fear interactions. So what about the potential side effects of CBD? Here you will find all the important information on this topic.

Does CBD oil have side effects?

CBD is said to be very helpful for various ailments. Since the research on the effects of CBD oilis not far advanced, nor can very much be said with certainty about possible side effects. In general, CBD has no side effects in the traditional sense. However, since every person is different, it can happen that an individual reaction to the cannabidiol can occur. That depends, among other things, on the correct dosage and the origin of the CBD product. Compared to conventional drugs, however, it has very few and also very mild side effects. Overall, cannabidiol is considered a safe substance. However, it is possible that it can affect the medication that is taken. This can also change their effect. Therefore, it is advisable for people who need to take medication regularly to speak to their doctor before taking CBD.

Known potentially possible side effects

There are a few side effects that can occur, but they have not yet been fully proven. So far, the reports on side effects of CBD have been based on experience and possible side effects that are derived from it. Possible side effects include persistent tiredness and dry mouth. Pregnant women should be on the Taking CBD dispense.

You may experience these side effects:

  • increased pressure in the eye
  • dry feeling in the mouth
  • Influence on the effect of drugs
  • Influence on enzymes in pregnancy
  • sleepiness
  • Difficulty falling asleep
  • low blood pressure
  • less appetite
  • increased tremors in Parkinson's patients
  • Diarrhea, gas, and abdominal pain
  • a headache

Increased intraocular pressure

New research shows that it is possible that CBD could raise intraocular pressure in glaucoma patients. A recent study suggests this suspicion. However, this study was carried out on mice. Some more studies are needed before any scientifically sound statement can be made about a possible increase in intraocular pressure in glaucoma patients. Until clear results are obtained, glaucoma patients should definitely consult their doctor before taking CBD. As a precaution, the use of CBD should be avoided in this disease.

Dry feeling in the mouth

Some users report a dry mouth feeling while taking CBD. It appears that the involvement of the endocannabinoid system could lead to a reduction in the flow of saliva. Scientists have found that CBD has an impact on cannabinoid receptors, including those responsible for making saliva. This can lead to a dry feeling in the mouth. This feeling can be easily compensated for by drinking enough water. Many users do not perceive this effect as negative. Especially people who drink too little during the day benefit from this body's memory.

CBD and medication

It is possible that there may be interactions between CBD and some drugs. Cannabidiol is able to interact with the body's own enzymes, which means that interactions with these drugs cannot be ruled out. CBD inhibits the activity of some very specific liver enzymes. These play an important role in the metabolism of the drugs. The enzymes convert the substances in such a way that they can be absorbed by the body and then broken down again. If the enzymes are inhibited by the CBD, drugs can have a stronger effect than usual. A changed effect is also possible. The drugs affected include the often prescribed drug diazepam. People who need to take medication regularly should definitely consult their doctor beforehand. Otherwise it is possible that the effect of the medication will be increased or reduced. But if you want to demonize the CBD right now, you should note that the popular and harmless grapefruit juice has a similar effect on the enzymes as CBD.

CBD in pregnancy

Is CBD okay during pregnancy, or should pregnant women rather avoid it? As in many other areas, scientists disagree on whether CBD can cause side effects during pregnancy. It is therefore generally advisable not to take CBD during pregnancy. It is possible that cannabidiol could negatively affect proteins that are responsible for the normal development of the placenta. If you really don't want to do without taking CBD during pregnancy, you should consult a doctor who is really familiar with cannabidiol. In general, pregnant women are not advised to take CBD.


This possible CBD side effect has been the subject of heated debate for some time. There are users who report that higher doses of CBD are said to have caused them drowsiness and drowsiness. However, this possible side effect has hardly been proven to this day. Of course, it is possible for users to feel drowsy after taking it. Often a much too high dose of CBD that has not been adapted to the body is responsible. As already said, everyone reacts differently to CBD. It is therefore important to slowly increase the dosage and to listen to the body. Much does not help much in this case. Anyone who notices this effect after taking CBD should under no circumstances take it before driving or before work. Then it is better to take advantage of this effect and take the cannabidiol in the evening before going to bed.

Difficulty falling asleep

But there have also been reports of the opposite effect of CBD. Difficulty falling asleep or insomnia are also possible side effects. Occasionally users report about it. The solution is quite simple: do not take cannabidiol in the evening.

Lowering blood pressure

It is possible that a very high dose of CBD can lead to a small decrease in blood pressure. This usually occurs within a few minutes of ingestion and can in turn lead to tiredness and a feeling of drowsiness. A particularly high dose of CBD is really necessary for this.

Less appetite

Some users see this possible side effect as a positive effect, for others it is rather undesirable. CBD is said to have appetite-suppressing effects. For this reason, CBD is also often used to treat obesity. The situation is different with seriously ill people who are often very emaciated or have a loss of appetite. By taking CBD, it is possible that the appetite will decrease further, which further promotes the unwanted loss of weight. In this case, you should refrain from taking CBD.

Increased tremors in Parkinson's patients

There are Parkinson's patients who report an increase in tremors after taking CBD. This is often the case when a particularly high dose of CBD has been taken. Many other patients, on the other hand, did not find any reinforcement. In this case, too, patients should consult their doctor before taking CBD.

Abdominal pain, gas, and diarrhea

CBD is said to have a positive influence on gastrointestinal problems and to offer a soothing effect. Few users also report that gas, diarrhea and abdominal pain are said to have occurred at the beginning of taking CBD. The experts assume that the body first has to get used to this remedy. These are mild side effects that do not have to result in discontinuation of the intake. The body should have enough time to get used to the remedy. Usually these side effects disappear after a short time.

a headache

The occurrence of headaches is also said to be one of the possible side effects of CBD. There are users who have complained of headaches after taking CBD. However, in most cases, these headaches were only noticed after the first few uses of CBD in people who have never used CBD before. In most cases, the headache will subside after a few days of use.

Low quality CBD products

CBD products that are of inferior quality can also pose a risk. In many cases, very cheap manufacturing processes are used. In addition, additives are added to the products that can trigger a negative reaction in the body. It is therefore advisable to always buy high-quality CBD products, preferably organic. This makes it possible to ensure that there are no pesticides in the product.

CBD side effects not yet proven

All of these possible side effects mentioned are user reviews. For most of them they are of little relevance. In addition, there are no long-term studies that prove these possible side effects. It can therefore be assumed that these are mainly individual reactions of the body, often this reaction is based on the administration of a much too high dose of CBD. It is important to find the right dosage for the body. A slow approach has proven to be the best option. First start with just a few drops and gradually increase the dose over time, this procedure promises the best success.

For people who need to take medication regularly, it is always advisable to consult a doctor before taking CBD. This is the only way to find out whether there is a possible interaction between the drugs and CBD.

The WHO (World Health Organization) comes to the conclusion that cannabidiol is generally very well tolerated and officially classified CBD as harmless. According to the WHO, this herbal active ingredient poses no risk to public health. In addition, it does not provoke any mental or physical dependence.