Why Does Weed Make Your Eyes Red? Here’s the Science (and the Fix)
You know the look—glassy, bloodshot, and unmistakably “high.” But what’s really happening when your eyes turn red after a session? However you consume your cannabis, red eyes are one of the most common (and confusing) side effects you’ll experience. So let’s clear things up.
What Actually Causes Red Eyes From Cannabis?
It’s not smoke irritation—it’s science. The real reason your eyes get red is because of THC’s effect on blood pressure and blood vessels.
When you consume THC, especially in high-potency products like Double Bear concentrates, it temporarily increases your heart rate and lowers your blood pressure. This drop in pressure causes the tiny blood vessels and capillaries in your eyes to dilate, allowing more blood to flow through and making your eyes appear red or bloodshot.
Cannabis’s ability to dilate blood vessels is also what makes it useful in treating glaucoma. In fact, research on THC’s effect on glaucoma shows it can reduce intraocular pressure in the eye, which is why it’s been studied as a therapeutic option.
Do Edibles and Vaping Cause Red Eyes Too?
Yes. It’s not about how you consume—it’s about the THC. Whether you’re vaping, eating, or using topicals with high THC content, that cannabinoid still enters your bloodstream and causes vasodilation.
However, not everyone experiences red eyes every time. Your individual tolerance, dosage, and even hydration levels all play a role in how noticeable the effect is.
How Long Do Red Eyes Last?
Typically, red eyes from cannabis last anywhere from 30 minutes to a few hours, depending on your metabolism and the amount of THC consumed. For most people, the redness fades as the effects of the high wear off. No need to panic—it’s a harmless and temporary reaction.
How to Get Rid of Red Eyes After Consuming Weed
While you can’t completely prevent red eyes if THC is in the mix, you can reduce their severity with a few simple tricks:
- Stay hydrated. Dehydration can make symptoms worse.
- Get enough sleep. Tired eyes are more prone to redness.
- Use over-the-counter eye drops. Look for ones specifically formulated for redness relief.
- Relax and ride it out. It’s temporary, and stressing will only make your eyes look more tired.
If you’d rather explore some at-home tips, cannabis lifestyle publications like Merry Jane offer helpful suggestions on how to get rid of red eyes after smoking.
Are Red Eyes from Weed Dangerous?
Not at all. While they might look dramatic, red eyes from cannabis are strictly cosmetic. Unless you’re feeling pain, vision changes, or extreme discomfort, there’s no cause for concern. However, if your red eyes are accompanied by other symptoms, it’s a good idea to check in with a healthcare provider.
Ready to Find the Right Products?
Now that you’re equipped with the facts, you can make informed decisions about how and when you consume. Whether you’re looking for a mellow edible or a potent extract, find a dispensary near you to explore Double Bear and other trusted brands.
FAQ: High Eyes, Answered
Q: Do all types of weed cause red eyes?
A: Most strains with THC can cause red eyes, but potency, consumption method, and personal sensitivity all matter.
Q: Can CBD cause red eyes?
A: CBD is not known to cause eye redness. It’s primarily a THC-related effect.
Q: Will red eyes go away on their own?
A: Yes. In most cases, the redness fades in a few hours without treatment.
Q: What’s the fastest way to get rid of red eyes?
A: Hydration and redness-reducing eye drops are your best bet.