The cause of irritable bowel syndrome is unknown. Antibiotic-associated colitis usually occurs in people receiving antibiotics. Inflammatory bowel diseases is a common cause of bowel inflammation and low back pain. There are two major forms: Crohns disease and ulcerative colitis. The causes are unknown. â¢Genetic: There is a high similarity of symptoms among identical twins, particularly with Crohn disease.
An effective dose (ED) in pharmacology is the dose or amount of drug that produces a therapeutic response or desired effect in some fraction of the subjects taking it.D50 [edit]. The median effective dose is the dose that produces a quantal effect (all or nothing) in 50% of the population that takes it (median referring to the 50% population base). It is also sometimes abbreviated as the ED50, meaning effective dose, for 50% of people receiving the drug.
Steroids. Steroids are also highly effective medications for treating allergic reactions. In contrast to antihistamines, however, steroids have a more gradual, but long-lasting, onset of action. Fluticasone, a steroid used as a nasal spray in the treatment of hay fever, takes a minimum of eight hours to be effective.hey are effective, for example, in the treatment of skin allergies and hay fever. Newer generation antihistamines offer allergy relief while causing minimal sleepiness. These medications typically begin to work within one and two hours.