Phase I Study of PSD502 (Lidocaine Prilocaine Spray) Applied to the Glans Penis up to Three Times a Day for 21 Days in Healthy Male Volunteers

Inclusion Criteria: * Willing and able to provide written informed consent * Male, aged 18 years and over * In generally good health in the opinion of the Investigator * Willing and able to comply with all study procedures in the opinion of the Investigator Exclusion Criteria: * History of a significant medical condition that would preclude further study participation, in the opinion of the Investigator. * Currently taking, or has taken within the 2 weeks prior to the Screening Visit, any concomitant medication that could confound interpretation of the safety data PSD502 * Suffering from an STD, or is positive for hepatitis B, hepatitis C, or HIV infection. * Safety testing abnormalities at the Screening Visit, in particular liver function tests, that are indicative of a medical condition and that would preclude further participation, in the opinion of the Investigator. * Significant abnormality of the glans penis that would preclude interpretation of the examination of the glans, or that could be worsened by use of PSD502. * History of alcohol or drug abuse within 1 year prior to the Screening visit. * Known drug sensitivity to amide-type local anesthetics. * Use of an investigational (non-registered drug within 30 days of the Screening Visit. * Unlikely to understand or be able to comply with study procedures, for any reason, in the opinion of the Investigator. * History of Glucose-6-Phosphate Dehydrogenase (G-6-PD)deficiency or use of medications that would increase susceptibility to methemoglobinemia (e.g. anti-malarial agents). * Use of class 1 (e.g. mexiletine, tocainide) and III (e.g. amiodarone, sotaolol)anti-arrhythmic drugs.