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Other drug names: | A-Am An-Az B C-Ch Ci-Cz D-Dh Di-Dz E F G H I-J K-L M-Mh Mi-Mz N-Nh Ni-Nz O P-Pl Pm-Pz Q-R S-Sn So-Sz T-To Tp-Tz U-V W-Z 0-9 |
Contents of this page: | |
Some commonly used brand names are:
In the U.S.—
In Canada—
Note: | For quick reference, the following magnesium supplements are numbered to match the corresponding brand names. |
This information applies to the following: | ||||||||||
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‡ Generic name product may be available in the U.S. | ||||||||||
§ Generic name product may be available in Canada | ||||||||||
* Not commercially available in the U.S. | ||||||||||
† Not commercially available in Canada | ||||||||||
# See Laxatives (Oral) for laxative use of magnesium citrate, magnesium hydroxide, magnesium oxide, and magnesium sulfate. | ||||||||||
** See Magnesium Sulfate (Systemic) for use in seizures and uterine tetany. | ||||||||||
†† See Antacids (Oral) for antacid use of magnesium hydroxide and magnesium oxide. |
Magnesium is used as a dietary supplement for individuals who are deficient in magnesium. Although a balanced diet usually supplies all the magnesium a person needs, magnesium supplements may be needed by patients who have lost magnesium because of illness or treatment with certain medicines.
Lack of magnesium may lead to irritability, muscle weakness, and irregular heartbeat.
Injectable magnesium is given only by or under the supervision of a health care professional. Some oral magnesium preparations are available only with a prescription. Others are available without a prescription.
Magnesium supplements are available in the following dosage forms:
The daily amount of magnesium needed is defined in several different ways.
Normal daily recommended intakes in milligrams (mg) for magnesium are generally defined as follows:
Persons | U.S.(mg) | Canada(mg) |
Infants and children Birth to 3 years of age | 40–80 | 20–50 |
4 to 6 years of age | 120 | 65 |
7 to 10 years of age | 170 | 100–135 |
Adolescent and adult males | 270–400 | 130–250 |
Adolescent and adult females | 280–300 | 135–210 |
Pregnant females | 320 | 195–245 |
Breast-feeding females | 340–355 | 245–265 |
If you are taking this dietary supplement without a prescription, carefully read and follow any precautions on the label. For magnesium supplements, the following should be considered:
Allergies—Tell your health care professional if you have ever had any unusual or allergic reaction to magnesium. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.
Pregnancy—It is especially important that you are receiving enough vitamins and minerals when you become pregnant and that you continue to receive the right amount of vitamins and minerals throughout your pregnancy. The healthy growth and development of the fetus depend on a steady supply of nutrients from the mother. However, taking large amounts of dietary supplements during pregnancy may be harmful to the mother and/or fetus and should be avoided.
Breast-feeding—It is especially important that you receive the right amount of vitamins and minerals so that your baby will also get the vitamins and minerals needed to grow properly. However, taking large amounts of a dietary supplement while breast-feeding may be harmful to the mother and/or baby and should be avoided.
Children—Problems in children have not been reported with intake of normal daily recommended amounts.
Older adults—Problems in older adults have not been reported with intake of normal daily recommended amounts.
Studies have shown that older adults may have lower blood levels of magnesium than younger adults. Your health care professional may recommend that you take a magnesium supplement.
Other medicines—Medicines or other dietary supplements
Although certain medicines or other dietary supplements should not be used together at all, in other cases they may be used together even if an interaction might occur. In these cases, your health care professional may want to change the dose, or other precautions may be necessary. When you are taking magnesium, it is especially important that your health care professional know if you are taking any of the following:
Dosing—
The amount of magnesium needed to meet normal daily recommended intakes will be different for different patients. The following information includes only the average amounts of magnesium.
Magnesium supplements should be taken with meals. Taking magnesium supplements on an empty stomach may cause diarrhea.
For individuals taking the extended-release form of this dietary supplement:
For individuals taking the powder form of this dietary supplement:
Missed dose—
If you miss taking your magnesium supplement for one or more days there is no cause for concern, since it takes some time for your body to become seriously low in magnesium. However, if your health care professional has recommended that you take magnesium, try to remember to take it as directed every day.
Storage—
To store this dietary supplement:
Along with its needed effects, a dietary supplement may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your health care professional immediately if any of the following side effects occur:
Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your health care professional if the following side effect continues or is bothersome:
Other side effects not listed above may also occur in some individuals. If you notice any other effects, check with your health care professional.
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Page last updated: 22 October 2004 |