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).
Melatonin is a hormone made by a part of the brain called the pineal (say: pie-nee-all) gland. Melatonin may help our bodies know when it's time to go to sleep and when it's time to wake up. Melatonin supplements (in pill form) are also available.Two types of melatonin may be used in these pills: natural and synthetic (manmade). Natural melatonin is made from the pineal gland of animals. This form could be contaminated with a virus so it is not recommended.The synthetic form of melatonin does not carry this risk. If you are not sure if your melatonin is natural or synthetic, ask your doctor or pharmacist before taking it.atural melatonin is made from the pineal gland of animals. This form could be contaminated with a virus so it is not recommended. The synthetic form of melatonin does not carry this risk.