Recreational drug use are caused by an excessive response of the body to allergens, such as the pollen released by grasses and trees. An allergic reaction causes release of histamine by the body. Other uses of antihistamines are to help with normal symptoms of insect stings even if there is no allergic reaction. Their recreational appeal exists mainly due to their anticholinergic properties, that induce anxiolysis and, in some cases such as diphenhydramine, chlorpheniramine, and orphenadrine, a characteristic euphoria at moderate doses. High dosages taken to induce recreational drug effects may lead to overdoses. Antihistamines are also consumed in combination with alcohol, particularly
The 4400 research, Dr. Burkhoff believes a simple CAT scan will be able to tell how anyone's body will react to a promicin shot. There exists a substance that can eliminate all traces of promicin in the human body, effectively robbing the injected individual of any 4400 powers and in addition making this person allergic to promicin. The identity and makeup of this substance is not stated, and the only known source of it so far is from the future. A second method also exists for removing promicin from non-4400 humans, through the promicin-neutralizing ability of Jordan Collier. There also appears to