Why does cannabis make you cough?

Almost everyone coughs on cannabis smoke at some point, beginners especially. It’s not a sign you’re doing anything wrong. It’s your lungs doing exactly what they’re built to do.

Why it happens

Smoke is hot and full of fine particles and combustion byproducts. Your airways treat that as an irritant and trigger a cough to clear it out. On top of that, THC itself can briefly irritate the airways. Put together, a cough is a completely normal reflex.

Beginners cough more because their lungs aren’t used to it, and because they often take a bigger pull than they can handle.

Does coughing get you higher? No.

This is a stubborn myth. Coughing doesn’t push more THC into your system. The brief head-rush some people feel after a coughing fit comes from the coughing itself and a quick dip in oxygen, not extra potency. If anything, hacking away just wastes smoke and irritates your throat.

How to cough less

• Take smaller puffs. A gentle, half-sized inhale is far easier to handle.
• Don’t hold it in. Most THC absorbs in seconds, so holding smoke just irritates your lungs for no benefit. See smoking methods compared.
• Cool the smoke. A water pipe cools and smooths it, which helps a lot of people.
• Stay hydrated and have a drink nearby.
• Go smoke-free. A vaporizer avoids combustion, and edibles or tinctures skip the lungs entirely.

An occasional cough is no big deal. But if you’ve got a steady smoker’s cough, that’s your lungs telling you the smoke is wearing on them, and a good nudge toward a gentler format. See cannabis and your lungs.

Sources

• Health Canada, Cannabis health effects