Normal Levels. Blood sodium levels are measured in terms of millequivalents per liter or (mEq/L). The normal range for blood sodium is 135 to 145 mEq/L, according to Medline Plus. physician will often begin to monitor blood sodium levels when they drop lower than the 120 mEq/L range. While some adults can function sufficiently at these levels, many may have symptoms such as fatigue, lethargy, confusion, muscle cramps and nausea.
Rating Newest Oldest. Best Answer: The brain produces Endorphins to ease/relieve pain. The brain also produces seratonin, dopamine, melatonin, and others. Adrenaline is produced by the adrenal glands which rest on top the kidneys.
Answers. Best Answer: Mechanism for transmitting pain is by the chemicals found in every nerve cell, called neurotransmitters. These either send or block pain messages. Serotonin is one such neurotransmitter.It blocks pain and induces a feeling of well-being. Endorphin is another neurotransmitter, a natural pain killer similar to morphine. The level of these chemicals varies between people and their production can be voluntarily increased, for example by vigorous exercise.erotonin is one such neurotransmitter. It blocks pain and induces a feeling of well-being. Endorphin is another neurotransmitter, a natural pain killer similar to morphine. The level of these chemicals varies between people and their production can be voluntarily increased, for example by vigorous exercise.