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How much CBD oil should I give my pet rat for cancer treatment?

Updated On September 23rd, 2025

Hi I wonder if you can help me I've got a pet rat who has Sarcoma cancer which was removed a couple of months ago, but unfortunately it has come back over the last couple of weeks. I don't want to keep putting her through operations every time so I have looked into Cbd oil which contains no doping agent it's all natural & legal. What I need help with is what dosage to give her. The bottle of Cbd oil is a 10ml and the strength of Cbd is 300mg. My rat weighs 0.540grams. Thanku Kind regards Lynsey

1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on August 3rd, 2018

The research isn't really clear at this point as to whether or not cannabidiol oils are helpful as a treatment or palliative care option for cancer. Cannabidiol oils have been shown in some studies to slow tumor growth and prevent metastasis, and it seems they are generally safe, but again there is not much research at this point. To my knowledge there is no published dose for rats, although much of the research occurs in rats due to their status as a lab animal. Some veterinarians recommend a dose of 0.1-0.5 mg/kg of CBD oil twice daily for dogs, and with many medications rats would be dosed similar to dogs. I found several research articles where rats were given 10 mg/kg of CBD oil, although the rats were not evaluated for side effects and it's possible that this dose caused problems not mentioned in the studies. I hope this information helps!

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