home *** CD-ROM | disk | FTP | other *** search
- $Unique_ID{BRK03228}
- $Pretitle{}
- $Title{methyldopa}
- $Subject{Aldomet Merck Sharp Dohme Amodopa Major Antihypertensive methyldopa
- high blood pressure central nervous system brain spinal cord}
- $Volume{}
- $Log{}
-
- Copyright (C) 1993 Publications International, Ltd.
-
-
- methyldopa
- ------------------------------------------------------------------------------
-
- BRAND NAMES (Manufacturers)
-
- Aldomet (Merck Sharp & Dohme)
- Amodopa (Major)
- methyldopa (various manufacturers)
-
- TYPE OF DRUG
-
- Antihypertensive
-
- INGREDIENT
-
- methyldopa
-
- DOSAGE FORMS
-
- Tablets (125 mg, 250 mg, and 500 mg)
- Oral suspension (250 mg per 5-ml spoonful, with 1% alcohol)
-
- STORAGE
-
- Store at room temperature in a tightly closed, light-resistant container.
- This drug should never be frozen.
-
- USES
-
- Methyldopa is used to treat high blood pressure. It is not clear exactly
- how methyldopa works, but it is thought to act on the central nervous system
- (brain and spinal cord) to prevent the release of chemicals responsible for
- maintaining high blood pressure.
-
- TREATMENT
-
- In order to prevent stomach irritation, you can take methyldopa with food
- or a full glass of water or milk. Try to take it at the same time(s) each day
- (unless your doctor directs you to do otherwise).
- The oral suspension should be shaken well before each dose is measured.
- The contents tend to settle to the bottom of the bottle, so the bottle should
- be shaken to distribute the medication evenly and equalize the doses. Each
- dose should then be measured carefully with a specially designed 5-ml
- measuring spoon. An ordinary kitchen teaspoon is not accurate enough.
- Methyldopa does not cure high blood pressure, but it will help to control
- the condition as long as you take it.
- If you miss a dose of this medication, take the missed dose as soon as
- possible, unless it is almost time for the next dose. In that case, do not
- take the missed dose at all; just return to your regular dosing schedule. Do
- not double the next dose.
-
- SIDE EFFECTS
-
- Minor.
-
- Bloating, constipation, diarrhea, dizziness, drowsiness, dry mouth, gas,
- headache, light-headedness, loss of appetite, nasal congestion, nausea,
- vomiting, or weakness. These side effects should disappear as your body
- adjusts to the medication.
- To relieve constipation, increase the amount of fiber in your diet (fresh
- fruits and vegetables, salads, bran, and whole-grain breads), exercise, and
- drink more water (unless your doctor directs you to do otherwise).
- If you feel dizzy or light-headed, sit or lie down for a while; get up
- slowly from a sitting or reclining position, and be careful on stairs. To
- avoid dizziness or light-headedness when you stand, contract and relax the
- muscles of your legs for a few moments before rising. Do this by pushing one
- foot against the floor while raising the other foot slightly, alternating feet
- so that you are "pumping" your legs in a pedaling motion.
-
- Major.
-
- Tell your doctor about any effects that are persistent or bothersome. IT
- IS ESPECIALLY IMPORTANT TO TELL YOUR DOCTOR about abdominal distention,
- blurred vision, breast enlargement (in both sexes), chest pain, confusion,
- decreased sexual ability, depression, difficulty in breathing, fainting,
- fatigue, fever, inflamed salivary glands, insomnia, nightmares, numbness or
- tingling, rapid weight gain (three to five pounds within a week), severe
- stomach cramps, sore joints, sore or "black" tongue, tremors, unusual bleeding
- or bruising, unusual body movements, or yellowing of the eyes or skin.
-
- INTERACTIONS
-
- Methyldopa interacts with several other types of drugs:
- 1. It can increase or decrease the antiparkinsonism effects of levodopa.
- 2. The use of a monoamine oxidase (MAO) inhibitor within 14 days of
- methyldopa can cause headaches, severe hypertension, and hallucinations.
- 3. The combination of methyldopa and metho-trimeprazine can cause a
- severe drop in blood pressure; methyldopa and haloperidol can cause
- irritability; methyldopa and phenoxybenzamine can cause urinary retention; and
- methyldopa and alcohol can cause dizziness and fainting.
- 4. The effects of methyldopa may be increased by verapamil and
- fenfluramine.
- 5. Methyldopa can also increase the side effects of tolbutamide and
- lithium.
- 6. Methyldopa may increase the effects of norepinephrine and
- phenylpropanolamine, which may increase blood pressure.
- Before starting to take methyldopa, BE SURE TO TELL YOUR DOCTOR about any
- medications you are currently taking, especially any of those listed above.
-
- WARNINGS
-
- * Tell your doctor about unusual or allergic reactions you have had to
- any medications, especially to methyldopa.
- * Before starting to take this medication, be sure to tell your doctor if
- you now have or if you have ever had anemia, angina, kidney disease, liver
- disease, mental depression, Parkinson's disease, or stroke.
- * In order to avoid dizziness or fainting while you are taking this
- medication, try not to stand for long periods of time; avoid drinking
- excessive amounts of alcohol; and try not to get overheated (avoid strenuous
- exercise in hot weather and do not take hot baths, showers, and saunas).
- * If this drug makes you dizzy or drowsy, avoid taking part in any
- activity that requires alertness, such as driving a car or operating
- potentially dangerous machinery.
- * Before surgery or other medical or dental treatment, be sure that you
- tell your doctor or dentist you are taking this medication.
- * Before taking any over-the-counter (nonprescription) allergy, asthma,
- sinus, cough, cold, or diet product, check with your doctor or pharmacist.
- Some of these products can cause an increase in blood pressure.
- * Do not stop taking this medication unless you first check with your
- doctor. If this drug is stopped abruptly, you could experience a sudden rise
- in blood pressure. Your doctor may, therefore, want to decrease your dosage
- gradually.
- * If you have an unexplained fever, especially during the first two or
- three weeks after starting to take this medication, CONTACT YOUR DOCTOR.
- Fever can be a sign of a serious reaction to methyldopa.
- * Occasionally, during the second or third month of therapy, drug
- tolerance may develop. If you notice a decrease in effectiveness of
- methyldopa, contact your doctor.
- * Before donating blood or receiving a blood transfusion, be sure that
- the doctor knows you are taking this medication. It can cause changes in your
- blood cells.
- * Aldomet suspension contains sodium bisulfite, which may cause
- allergic-type reactions (hives, itching, wheezing) in certain susceptible
- persons.
- * Be sure to tell your doctor if you are pregnant. Although this drug
- appears to be safe, extensive studies in women during pregnancy have not been
- conducted. Also, tell your doctor if you are breast-feeding an infant. Small
- amounts of methyldopa pass into breast milk.
-
- ----------------
-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-