Different types of medication treat high blood pressure, also known as hypertension. Olmetec, the brand name in the United Kingdom and many other countries for the generically named medicine, olmesartan, classifies as an angiotensin II receptor antagonist. The drug, according to Netdoctor, reduces blood pressure by blocking the angiotensin II hormonal action in the person's body. This allows the blood vessels to relax and keeps the kidneys from retaining unneeded water and salt.
Dizziness
As Olmetec works to reduce a person's blood pressure, it can produce the adverse effect of dizziness. A reduction in blood pressure can cause the brain to miscommunicate with the head about the position of the latter. If the brain does not have effective information about this position, it can misunderstand how the body is oriented and cause a sensation of a whirling motion. Dizziness can make the person feel nauseated and even force him to vomit if it becomes severe. The side effect of dizziness is classified as nonserious and generally ends without aid from a physician. MedlinePlus recommends telling the physician about the dizziness if it occurs severely or does not stop following the adjustment to olmesartan.
Gastric Problems
Nausea and vomiting also may occur as side effects of taking Olmetec, Netdoctor reports, even if no dizziness is present. Olmetec also may cause the person to feel a sensation of indigestion. Taking the medicine may cause disruption in the intestines, resulting in cramping and diarrhea. These side effects commonly occur at the start of Olmetec treatment; if they continue or are severe, a doctor should be consulted.
Blood Side Effects
Olmetec may induce some problems in the blood, Netdoctor states. It may, for example, cause a raised uric acid level called hyperuricemia. This can cause the person to develop gout, a type of arthritis in which crystallization of uric acid occurs in the joints, causing severe pain. Olmetec also may produce hyperkalemia, a condition in which too much potassium exists in the bloodstream. Hypertriglyceridemia also may occur; this involves raised levels of triglycerides in the blood. These triglycerides, a type of fat, may cause blockages in the arteries and blood vessels that can lead to stroke or heart attack.
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