The US FDA has assigned the pregnancy category B status to Benadryl, which means that it is considered safe to use, as there are no known side effects. However, your doctor will be the best person to judge whether or not you should take Benadryl while you are pregnant. He will also decide on the quantity of intake.
Human carcinogen -- Benzene: Benzene is a chemical deemed to be carcinogenic to humans. The carcinogenicity of the substance may be influenced by the nature (e.g. inhalation, ingestion, skin contact), duration and level of exposure. Benzene exposure is associated mainly with an increased risk of developing leukemia or lymphoma.
The chemical symbol for benzene is C6H6. Benzene is formed from both natural processes and human activities. It is produced from volcanoes and forest fires and is a natural part of crude oil, gasoline, and cigarette smoke. Diesel exhaust contains benzene.Benzene is one of the 20 most widely used chemicals in the United States. It is used to make other chemicals that are then used to make plastics, resins, nylon, and other synthetic fibers.ou can be exposed to benzene indoors at home, where the air can contain higher levels of benzene than outdoor air, from products such as glue, paint, furniture wax, and detergent. Approximately half the national exposure to benzene comes from smoking cigarettes or being exposed to cigarette smoke, indoors or outdoors.