An allergen is a type of antigen that produces an abnormally vigorous immune response in which the immune system fights off a perceived threat that would otherwise be harmless to the body.Such reactions are called allergies.hen an allergen enters the body of an individual that is predisposed to allergies, it triggers an immune reaction and the production of antibodies. These allergen antibodies migrate to mast cells lining the nose, eyes and lungs.
Progestins are synthetic progestogens, medications that have effects similar to those of progesterone. The two most common uses of progestins are for hormonal contraception (either alone or with an estrogen), and to prevent endometrial hyperplasia from unopposed estrogen in hormone replacement therapy.
A: Neurontin (gabapentin) is an anticonvulsant. It's used to treat seizures and also nerve pain from shingles. Common side effects of Neurontin include dizziness, drowsiness, nausea, blurred vision, dry mouth, headache, diarrhea, and constipation.: I take 600 mg of gabapentin a day to control my interstitial cystitus. A: Neurontin (gabapentin) is a seizure medication used to treat sharp-shooting nerve pain, and interstitial cystitis is a long-term inflammation of the bladder wall.