Study the Effect of Cannabidiol Topical on Antinociceptive and Anti-inflammatory Activities in Animal Model

Abstract Introduction: Cannabidiol (CBD) is a non-psychoactive compound of cannabis. Due to the therapeutic potential of CBD, there were given drugs through oral administration to treat pain and anti-inflammatory. The bioavailability of CBD has been reported to be poor when given through oral administration because of the high first-pass effect with cytochrome P450. Transdermal delivery systems of CBD may increase bioavailability and decrease first-pass metabolism with cytochrome P450. This study aimed to evaluate the antinociceptive and anti-inflammatory activities of CBD cream in an animal model. Formalin test and Antinociceptive activity. Materials and Methods: We examined the antinociceptive and anti-inflammatory of CBD cream in an animal model. Formalin and writhing tests were used for the antinociceptive activity, and Acute inflammatory was used carrageenan-induced edema test. Result: In this study, we tested the efficacy of CBD topical for antinociceptive and anti-inflammatory in an animal model. For the formalin test, in the early phase, AUC values in all treatments were significantly decreased when compared with placebo cream (P<0.0001, P<0.0001, P<0.0001, respectively), which were the same results in the late phase. Moreover, mice treated with CBD and CBD+levomenthol group showed less pain than with diclofenac usage. For the acetic induce writhing response test, The results have demonstrated that diclofenac, CBD, and CBD+levomenthol cream showed an ability to reduce writhes compared with a placebo group. Carrageenan-induced edema, The 1% CBD cream could significantly decrease paw volume from 1 to 4 h compared to the placebo group. Overall, 1% CBD cream treatment may have a high efficacy in decreasing paw volume from 1 to 4 h. Conclusion: The study demonstrated that 1% CBD cream has potential effects for analgesia and anti-inflammation. Even though the mechanism of the therapeutic effect of a new formulation of CBD has not been completely understood, the topical of 1%CBD cream may also be a good candidate for treatment for analgesic and anti-inflammatory conditions.