There is simply not sufficient scientific evidence
None of these things have been properly verified and there are many people who are not convinced that the claims which are made can be substantiated. They are in fact many females who have been on hormonal birth control and CBD simultaneously over extended periods of times who have not reported any side effects or negative consequences. Similarly, claims have been made about most other notable pharmaceutical products but in most cases those things are subjective and without scientific or medical research they cannot be accepted as fact. One of the last studies on the alleged interference of CBD with hormonal birth control has been done in the early 1980s. Since then this subject has received very little attention probably because cannabis was still illegal in most countries. The 1983 study has indicated that CBD is apparently competing with estradiol which is an important female sex hormone. These two is then competing for estrogen receptors located in the reproductive system. This could then prevent estrogen-based contraception from working properly.
The CBD influence
According to one study cannabinoid receptors seem to play a large role in the ability of cannabinoids to actually influence hormone release. We already know that hormonal birth control is also having an effect on the hormone-behavior. This is exactly why substantially more research will have to be done to fully understand how birth control and CBD interfere with each other. Even if it could be proven that the hormone activity could be affected by CBD there are other noteworthy considerations. One of the very first pharmacological studies relating to CBD has discovered a remarkable side effect in other parts of the human body. As far as the human liver is concerned CBD inactivates cytochrome p450 enzymes. The enzymes are known to metabolize many of the clinically useful drugs. The conclusion, therefore, is that CBD could very well prevent hormonal birth control from being metabolized correctly by the human body.
In 2011 more was learned regarding the role of CBD in the prevention of drug metabolism. The findings of that study were published in the Life Sciences Journal. The advantage of this earlier database that it now seems to confirm that using CBD oil while on hormonal birth control could have negative consequences. For now, at least it will be best not to use CBD oil if you are already on hormonal birth control. This does not mean that it will be a good idea to ignore the many benefits which CBD has as far as various other health-related issues are concerned. Increasing numbers of people are using CBD every day often with remarkable results. Many of them are now using CBD products as a substitute for their prescription medication. The benefits of CBD when it comes to anxiety and depression cannot be refuted.