Canis ISSN: 2398-2942

Hemp (Cannabis sativa)

Synonym(s): Marijuana, Hashish, Mary Jane, Pot, Grass, CBD, THC, Weed

Contributor(s): Vetstream Ltd, Gigi Davidson

Introduction

  • See Cannabis poisoning Cannabis poisoning.
  • Medicinal hemp differs from medical marijuana in the concentration of cannibidiol (CBD) and tetrahydrocannabinal (THC). Industrial hemp contains high levels of CBD and not more than 0.3% THC on a dry matter basis. Medical marijuana may contain as much as 20% THC and low levels of CBD.
  • Rough-stemmed annual herb (resembles the giant ragweed).
  • Grows to a height of 1-2.5 m.
  • Flowers, leaves and stems covered with hairs which exude a sticky resin.
  • Leaves:
    • Opposite.
    • Long-stalked.
    • Each leaf has 5-7 long, pointed, coarsely toothed leaflets.
  • Flowers:
    • 2 kinds: one bearing pollen and one bearing seed.
    • Both kinds are small and green and are borne at the tip of the stem and in the upper axils of the leaves.
    • Small.
    • Green.
    • Clustered.
The US FDA has issued a warning about health risks associated with synthetic cannabinoid products contaminated with brodifacoum, a long-acting anticoagulant commonly used in rat poison. These unapproved products are being sold as substitutes for marijuana under names such as “K2” and “Spice".

Available products

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Legal considerations

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Medicinal properties

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Toxicity

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Clinical signs

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Confirmatory diagnosis

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Differential diagnoses for marijuana intoxication

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Treatment

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Further Reading

Publications

Referred papers

  • Recent references from VetMed Resource and PubMed.
  • Fitzgerald K T, Bronstein A C & Newquist K L (2013) Marijuana poisoning. Topics in Comp Anim Med 28(1), 8-12 PubMed.
  • Meola S D, Tearney C C, Haas S A et al (2012) Evaluation of trends in marijuana toxicosis in dogs living in a state with legalized medical marijuana: 125 dogs (2005-2010). J Vet Emerg Crit Care 22, 690-696 PubMed.
  • Jancyk P, Donalson C W, Gwaltney S (2004) Two hundred thirteen cases of marijuana toxicosis in dogs. Vet Human Toxicol 46, 19-21 PubMed.
  • Donalson C W (2002) Marijuana exposure in animals. Vet Med 6, 437-439.

Other sources of information


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