Lack of local anaesthetic efficacy of Sarapin in the abaxial sesamoid block model

by J D Harkins, G D Mundy, S D Stanley, R A Sams, T Tobin
Journal of Veterinary Pharmacology and Therapeutics ()


Sarapin@ is a distillate of the pitcher plant that has long been used in human and veterinary medicine for 'regional analgesia'. The mechanism of the reported analgesic response is unknown: however, the agent is purported to provide more effective analgesia for slow, chronic pain than for sharp, acute pain. Reportedly, Sarapin@ is also widely used as an analgesic agent in the horse, generally in combination with corticosteroids and other agents. To determine its local anaesthetic efficacy in the horse, we tested Sarapin'E' in a unilateral abaxial sesamoid block model at two dose levels, 2 mL and 10 mL per site, respectively. Cutaneous pain was induced with a light/heat lamp, and analgesia was assessed by measuring the hoof-withdrawal reflex latency period. Neither dose of Sarapin@ altered hoof-withdrawal reflex latency in this experimental model tested over a two-week period. Based on the demonstrated efficacy of this local anaesthetic model, it seems clear that Sarapina' has no significant classical local anaesthetic actions in the horse, and probably not in other species either.

Cite this document (BETA)

Readership Statistics

7 Readers on Mendeley
by Discipline
by Academic Status
14% Other Professional
14% Student (Postgraduate)
14% Researcher (at a non-Academic Institution)
by Country
29% United Kingdom

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in