FREE CBD Lip Balm On Orders Over £30

Does CBD Make Your Eyes Red?

CBD Does not make your eyes red. Reddening of the eyes may happen for many reasons. Moreover, it is no secret that eyes are quite sensitive and can show many things.

Thus, many experienced people are even able to say if someone has smoked weed or not just by looking at the eyes. Hence a better question is "How much CBD can you vape per day

After all, CBD vape does not cause high. It is unlike weed or marijuana. Despite being a cannabis plant extract, it does not share many traits with the weed.

It is vital to understand that cannabis plants contain many cannabinoids. CBD is a major cannabinoid in the plant. Some cannabis varieties also contain THC in large amounts, a substance known to cause red eyes and euphoria. However, CBD is extracted from cannabis plants that are naturally low in THC, and these plants are better known as hemp.

Another interesting thing that is worth understanding is that though cannabinoids are chemically related to each other, most of them have very different properties. Sometimes, they even have an opposing action.

That is why some cannabinoids increase appetite, and others suppress it. Similarly, some cannabinoids cause euphoria or high, while most do not. Even more, most cannabinoids, including CBD, can even help overcome substance addiction, as it instead helps calm down nerves and reduce anxiety.

Cannabis and Red Eyes Connection

If CBD does not cause red eyes, why are people talking about it? they also want to know does CBD vape burns throat? It appears that there is a sound reason for that. Most mind-altering substances cause red eyes. In some individuals, even alcohol causes red eyes.

As far as cannabis is concerned, it appears that THC does cause red eyes. Studies show that THC lowers blood pressure and dilates blood vessels. This causes an increase in blood flow to various organs, including the eyes. Hence, in many people, eyes become red, or it causes bloodshot eyes. However, these effects are only characteristic of high-dose THC. Therefore, red eyes often occur in those who smoke weed or marijuana.[1]

However, Rechargeable CBD vape pens is very different from THC. It has a much milder vasodilatory action. Moreover, CBD products contain CBD only in permitted concentrations. This means that using legally sold CBD products is not likely to cause red eyes.

Of course, full-spectrum CBD oil or vapes do contain THC. But, again, THC concentration in these products is very low, and it is insufficient to cause red eyes. THC in full-spectrum CBD is just enough to cause higher relaxation. Not only do all legally sold products have low concentrations, but also, total THC does not exceed 1mg per container.[2] All this means that even overdosing on CBD will not cause red eyes.


  1. How does marijuana affect vision? | The Canadian Association of Optometrists [Internet]. [cited 2023 Dec 6]. Available from:
  2. CBD Laws UK in 2023 - - Explained [Internet]. Medic Pro. [cited 2023 Dec 3]. Available from:
Dr Preet Pal Singh Bhinder

This article was authored by: Dr. Preet Pal Singh Bhinder.

This article was peer-reviewed by Dr M Mansoor Siddique (PhD). Dr Siddique has over eight years of experience working with CBD and CBD products.

Disclaimer: All of our products are not intended to diagnose, treat or cure any disease. It is recommended to check with doctor before starting a new dietary supplement program. All CBD products sold have less than 0.2% THC content and abide by both EU an UK law.



© Copyright 2020 - CBD Oil King - All Rights Reserved
Address: CBD Oil King HQ, Heron House, Office 16 First Floor, Heigham Road, London, E6 2JG, UK
Tel: 020 8133 9919
Company Number: 13094719
Share via
Copy link