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Cannabinoid Hyperemesis Syndrome (CHS)

Cannabinoid Hyperemesis Syndrome (CHS) is a condition that leads to repeated and severe bouts of vomiting. It is rare and only occurs in daily long-term users of Cannabis.

How long does it take to recover from cannabinoid hyperemesis syndrome?

In the recovery phase, symptom improvement and resolution occur with cessation of Cannabis use. Symptom improvement can occur within 12 hours of Cannabis cessation, but can take as long as three weeks. Patients remain symptom-free while abstinent, but symptoms rapidly recur when they resume use.
Links to Cannabinoid Hyperemesis Syndrome and Cannabis Based Science & Medical Journals

2019 - Abstract ~ Emerging Role of Aprepitant in Cannabis Hyperemesis Syndrome.


2019 - Abstract ~ Patterns of Cannabis Use In Patients With Cyclic Vomiting Syndrome.

Clinical Gastroenterology and Hepatology.

2019 - Abstract ~ Cannabis Hyperemesis Syndrome in Palliative Care: A Case Study and Narrative Review.

Journal of Palliative Medicine.

2019 - Abstract ~ Cannabinoid hyperemesis syndrome: An unrecognized cause of nausea and vomiting.

Journal of the American Academy of Physician Assistants.

2019 - Abstract ~ Emergency Department Visits From Edible Versus Inhalable Cannabis.

Annals of Internal Medicine.

2019 - Abstract ~ Acute Illness Associated With Cannabis Use, by Route of Exposure: An Observational Study.

Annals of Internal Medicine.

2019 - Abstract ~ The utility of droperidol in the treatment of cannabinoid hyperemesis syndrome.

Clinical Toxicology.

2019 - Abstract ~ Cannabinoid toxicity in pediatrics.

Current Opinion in Pediatrics.

2019 - Abstract ~ Hair cannabinoid concentrations in emergency patients with cannabis hyperemesis syndrome.

Canadian Journal of Emergency Medicine.

2019 - Full ~ Canadian Association of Gastroenterology Position Statement: Use of Cannabis in Gastroenterological and Hepatic Disorders.

Journal of the Canadian Association of Gastroenterology.

BMJ Open Respiratory Research.

Journal of Addiction.