Can cannabis help with nausea?

For chemotherapy-induced nausea that resists standard drugs, approved cannabinoid medicines exist and have real evidence. For everyday nausea, there is no established role, and if you are a heavy daily user experiencing recurring vomiting, consider the paradox: it may be cannabinoid hyperemesis syndrome, and the fix is stopping, not more.

I vomit every morning and hot showers help, what is that?

That pattern in a heavy cannabis user is the textbook description of cannabinoid hyperemesis syndrome. It is under-recognized even by doctors. Bring the term to your physician; the only reliable cure is sustained cessation.

Cannabis & nausea: Evidence-Graded, With Sources

What the evidence says

STRONG EVIDENCE

Cannabinoid medicines are approved for chemotherapy-induced nausea

Dronabinol and nabilone have been approved for decades for chemo-induced nausea and vomiting that resists standard antiemetics. This is not a wellness claim, it is one of the oldest licensed uses of cannabinoids in medicine.

Dronabinol & nabilone approvals, PubMed ↗

MODERATE EVIDENCE

They work: but modern antiemetics mostly work better

Cannabinoids earned their approvals against the weaker antiemetics of the 1980s. Against today’s standard regimens (5-HT3 and NK1 antagonists), they are generally second-line. Useful when first-line fails, not a replacement for it.

Cannabinoids vs modern antiemetics, PubMed ↗

STRONG EVIDENCE

Heavy long-term use can cause the opposite: cannabinoid hyperemesis syndrome

CHS is a recognized, recurring cycle of severe nausea and vomiting in heavy daily users, relieved by hot showers, cured only by stopping. It is routinely misdiagnosed for years. The anti-nausea plant can become the cause of intractable vomiting.

Cannabinoid hyperemesis syndrome, PubMed ↗

This page is not medical advice.

Cannabis is not an approved treatment for nausea & vomiting in most jurisdictions, and nothing here recommends using it. If nausea & vomiting affects your life, bring this research, literally, these sources, to a physician and decide together. Laws differ by country and state; check CannabisLaws.ai before anything else.

Where you are

Is it legal where you live? Tell us your city to see the law status and minimum age.

Status for all 64 jurisdictions on CannabisLaws. Not legal advice.

Cannabis & nausea

Cannabinoid medicines are approved for chemotherapy-induced nausea

They work: but modern antiemetics mostly work better

Heavy long-term use can cause the opposite: cannabinoid hyperemesis syndrome

The graded facts behind this page