During relaxation of the heart (diastole) the left ventricle of the heart fills with blood returning from the lungs. The left ventricle then contracts and pumps blood into the arteries (systole). The blood pressure in the arteries during contraction of the ventricle (systolic pressure) is higher because blood is being actively ejected into the arteries. It is lower during relaxation of the ventricle (diastolic pressure) when no blood is being ejected into the arteries.
The Premarin family of drugs contains estrogenic compounds that are made from the urine of pregnant mares. Thatâs where the name is derived from: PRE gnant MA resâ ur IN e = Premarin. Any HRT with Prem in the brand name is likely to contain conjugated equine (o)estrogen (CEE).
Concerta is made by ALZA Corporation. Metadate CD and Metadate ER are made by UCB, Inc. Quillivant XR is made by Tris Pharma, Inc., and distributed by NextWave Pharmaceuticals, Inc., a subsidiary of Pfizer, Inc. Ritalin LA and Ritalin SR are made by Novartis Pharmaceuticals. Generic versions are made by several manufacturers. Methylphenidate Extended Release Article Continues on Next Page >.