Swiss Navy Deep Throat Spray Mango 2 fluid ounces from MD Science Labs. Swiss Navy Deep Throat Fast Acting Oral Numbing Spray is a delicious Desensitizer intended to enhance the ease and comfort of oral sexual activities with a great taste. Deep Throats proprietary formula quickly and effectively relaxes the deep throat area and suppresses gag reflexes. This flavor combines sweet and fruity for an irresistible taste experience. This Deep Throat Spray is intended to enhance the ease and comfort of oral sexual activities with a great tasting, desensitizing formula. 200+ sprays of an amazing flavor.