When it comes to over-the-counter (OTC) medicine, doctors are more concerned about what you are taking when you have high blood pressure, or hypertension.

Following a vigorous exercise workout, you may notice symptoms other than sore muscles. If your heartbeat feels abnormal, this could be a sign of a serious problem. Hearing your heart pump in your ears may be normal for you, but you should consult a physician to rule out any serious causes.

Irregular heartbeat may be felt in the form of heart palpitations. These palpitations make it feel as though the heart is pounding, racing, or even skipping beats. A person can also have an irregular heartbeat and not be aware of it.

Atherosclerosis, more commonly known as hardening of the arteries, is a condition in which plaque builds up in the walls of your arteries. Plaque deposits narrow the arteries, which can eventually become blocked and restrict blood flow. In some cases, plaque in your arteries can lead to a stroke.

Beta-blockers are a class of medications prescribed to block the effects of adrenaline, a hormone produced by the adrenal glands. They help the heart work more efficiently, thereby reducing blood pressure, heart rate, muscle tremors and even anxiety.

Mackerel is the name for several species of cold-water, oily fish. These fish are gaining attention because of their high levels of omega-3 fatty acids, which are beneficial for cardiovascular health. The American Heart Association recommends eating fish at least twice per week.

The Centers for Disease Control and Prevention estimates about 67 million American adults have high blood pressure, or hypertension. Sometimes called the "silent killer" because of a lack of symptoms, high blood pressure can increase your risk of stroke or heart attack.

An excess of stomach acid does not cause blood pressure to rise. While high blood pressure, medically termed "hypertension," and heartburn, known as acid reflux, both occur more commonly if you're overweight or obese, one does not cause the other.

Blood ammonia comes primarily from the bacterial breakdown of unabsorbed dietary protein in the intestine. Intestinal ammonia passes into the bloodstream and travels to the liver, which converts ammonia into urea. Urea subsequently passes from the body through the urine.

A fluid-restriction diet limits your daily intake of liquids, as well as foods that contain a high volume of fluid. The purpose of a fluid-restriction diet is to prevent the buildup of fluid in your body, a condition that's called edema.

HCG, or human chorionic gonadotropin, is a hormone produced in the placenta of pregnant women. It is approved by the U.S. Food and Drug Administration for the treatment of infertility and can be prescribed off-label for other purposes. HCG is also sold as a homeopathic supplement for weight loss.

Doctors prescribe calcium channel blockers to treat a number of conditions, including high blood pressure, migraine headaches, circulatory conditions and complications of brain aneurysms, according to MayoClinic.com.