Why does weed make your eyes red?

Ape and lettering "Why does weed make your eyes red?"

The redness of eyes after consuming cannabis is a well-known phenomenon that has intrigued and puzzled many users. While it may be a telltale sign of cannabis consumption, understanding the reasons behind it can shed light on this intriguing effect.

The effects of tetrahydrocannabinol (THC), the active compound in cannabis, on intraocular eye pressure, primarily cause the redness. As THC interacts with the body, it leads to a decrease in blood pressure, which in turn causes the blood vessels in the eyes to expand and increase blood flow. By this way weed make tour eyes red.

This increase in blood flow results in red, bloodshot eyes. In this article, we will explore the reasons behind this occurrence, how long red eyes typically last, and various methods to alleviate or conceal the redness.

How Long Do Red Eyes Last from Weed?

red eye

The duration of red eyes after consuming cannabis typically ranges from 1 to 4 hours, with noticeable improvement often occurring within an hour. However, it is important to note that the duration and intensity of redness can vary from person to person and even from session to session.

While your eyes may be visibly red for several hours on one occasion, they may appear completely normal after another. The primary factor influencing the redness of your eyes is the amount of THC consumed.

Generally, a higher consumption of cannabis and a stronger experience of its effects increase the likelihood of red eyes. However, other variables such as age, tolerance/sensitivity to THC, and overall health can also contribute to the degree of redness experienced, if any.

Why Does it heppened?


The red eyes after consuming weed is not due to the smoke itself, but rather the fascinating effects it has on intraocular eye pressure, or the fluid pressure within the eyes. Tetrahydrocannabinol (THC), the active compound in cannabis, plays a role in this phenomenon.

When THC is consumed, it leads to a decrease in blood pressure throughout the body. As a result, the blood vessels and capillaries expand, allowing for increased blood flow. This expansion of blood vessels includes the vein responsible for supplying blood to the eyes.

The increased blood flow and lowered blood pressure in the eyes can cause them to appear red. This mechanism is why medical marijuana is valuable in treating glaucoma, a condition characterized by increased intraocular pressure. Interestingly, the redness can occur regardless of the consumption method, including smokeless methods such as edibles.

It is important to note that while this is the most common cause of red eyes. There are rare instances where excessive coughing may result in a burst blood vessel.

Try Sauce Carts from our catalog.

How to Get Rid of Stoned Eyes Fast

red eye

If you find yourself needing to attend a dinner party or office function after a smoking session and want to conceal the redness in your eyes, there are a few options available to you.

One convenient solution is to visit a local convenience store or pharmacy and look for the eye drop aisle. Basic eye drops can quickly and effectively clear the stoned appearance from your eyes.

For faster relief, consider using redness-reducing eye drops that contain active ingredients like Tetrahydrozoline or Naphazoline. These ingredients artificially constrict the blood vessels in the eyes. While these drops are safe to use sparingly, frequent use may lead to dryness and potentially worsen eye redness.

If you prefer a natural remedy to combat red eyes, increasing your water intake can help. While it won’t immediately clear the redness, staying hydrated can alleviate dryness, which may contribute to bloodshot eyes.

Lastly, sometimes the best approach is to simply allow time to naturally alleviate the redness. This may require avoiding certain individuals for a few hour. It allows your body to naturally recover without the need for additional interventions.

It’s important to use eye drops responsibly and consult a healthcare professional if you have any concerns or persistent symptoms.

Check it out!

MINT CHIP — Sauce Cart

Do Edibles Make Your Eyes Red?

person's face and a smoke

The occurrence of red eyes after consuming cannabis edibles is dependent on the THC content in the infused product. If an edible contains a high THC concentration, such as 50mg, there is a strong likelihood of experiencing bloodshot eyes.

On the other hand, if an edible has a higher CBD content and only a few milligrams of THC, the visible effects on eye appearance in public will likely be much less pronounced. When THC from traditional edibles is consumed, it undergoes processing by the liver rather than directly entering the bloodstream.

As a result, it takes longer for the effects to manifest, including the delayed onset of red eyes.

This principle applies to various cannabis products, including vape cartridges, dabs, tinctures, topicals, and more.

If a chosen consumption method involves a significant amount of THC, the chain reaction within the cardiovascular system discussed earlier is likely to cause red eyes, potentially revealing one’s cannabis consumption.

However, opting for CBD vape cartridges or using CBN tinctures will help conceal any indications of cannabis use.

You can read our article about edibles “Different types of edibles”

In conclusion, the redness of eyes after consuming cannabis is a common occurrence due to the effects of THC on intraocular eye pressure.

Duration of red eyes can vary from person to person. It typically lasts between 1 to 4 hours, with improvements often noticeable within an hour. The intensity and duration of redness are influenced by factors such as the amount of THC consumed or individual sensitivity.

Various methods can be employed to alleviate red eyes, including the use of eye drops, increasing hydration, or simply allowing time for the redness to naturally subside. It’s important to remember to use eye drops responsibly and consult a healthcare professional if needed.

Additionally, the redness effect can also occur with cannabis edibles, depending on the THC content, and can be managed by opting for products with higher CBD concentrations.

Leave a Reply

Your email address will not be published. Required fields are marked *