Pass a Drug Test

Unlike most allergic reactions, which occur fairly quickly after exposure to the allergen, allergic reactions to drugs tend to occur days or weeks after the first dose of the drug.Anaphylaxis or anaphylactic reaction. This is a serious allergic reaction that can be life threatening. A person with anaphylaxis must be treated in a hospital emergency department.Almost all anaphylactic reactions occur within four hours of the first dose of the drug. Most occur within one hour of taking the drug, and many occur within minutes or even seconds.Always contact the health-care provider who prescribed the medication for advice. If the symptoms are mild, such as itching and localized hives, the provider may switch you to a different type of medication, recommend that you stop the medication, or, if appropriate, prescribe antihistamines… Continue reading