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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice.
Magnesia Phos
Brand Name
Magnesia Phos
Generic Name
Magnesia Phos
Active Ingredient
Magnesium Phosphate, DibasicCategory
Non-Standardized Plant Allergenic Extract [EPC]
Salt Form
Trihydrate
Variants
2
Different strengths and dosage forms
| Strength | Form | Route | NDC |
|---|---|---|---|
| 30 [hp_X]/23g | GLOBULE | ORAL | 53645-1680 |
| 1 [hp_X]/mL | LIQUID | ORAL | 15631-2833 |
This page is for informational purposes only and does not replace medical advice. Before using any prescription or over-the-counter medication for Magnesia Phos, you must consult a qualified healthcare professional.
Detailed information about Magnesia Phos
Magnesium Phosphate, Dibasic is a mineral supplement and electrolyte replenisher used to support bone health and metabolic function. It belongs to the class of phosphate binders and mineral replacements, often utilized in clinical settings to manage electrolyte imbalances.
For general mineral supplementation, the standard adult dosage typically ranges from 250 mg to 500 mg daily, though specific requirements vary based on the patient's serum levels and underlying health conditions. When used as a phosphate binder, healthcare providers may adjust the dose to be taken with meals to maximize the chelation of dietary phosphorus.
Pediatric dosing is strictly weight-based and must be determined by a pediatrician. For children aged 1-8 years, the Recommended Dietary Allowance (RDA) for elemental magnesium ranges from 80-130 mg daily. Use in infants and young children requires close medical supervision to prevent electrolyte toxicity.
Patients with impaired kidney function (reduced GFR) require significant dose reductions. Because magnesium and phosphate are cleared by the kidneys, there is a high risk of accumulation and toxicity in these patients.
No specific dosage adjustments are typically required for patients with liver disease, as the substance is not metabolized by the liver.
Older adults should start at the lower end of the dosing range, as they are more likely to have age-related decreases in renal function.
If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and resume your regular schedule. Do not double the dose to catch up.
Signs of overdose (hypermagnesemia) include extreme thirst, low blood pressure (hypotension), confusion, muscle weakness, and slowed breathing. In severe cases, cardiac arrest may occur. Seek emergency medical attention immediately if an overdose is suspected.
> Important: Follow your healthcare provider's dosing instructions. Do not adjust your dose without medical guidance.
The most frequently reported side effect is osmotic diarrhea (loose stools). This occurs because magnesium salts draw water into the intestines. Patients may also experience mild abdominal cramping or bloating shortly after ingestion.
Magnesium Phosphate, Dibasic must be used with caution in patients with pre-existing electrolyte imbalances. It is not a substitute for a balanced diet but an adjunct to therapy when dietary intake is insufficient.
No FDA black box warnings for Magnesium Phosphate, Dibasic.
There are no absolute drug-to-drug contraindications that apply to all patients, but it should not be used with other high-dose magnesium or phosphate products simultaneously to avoid toxicity.
Magnesium Phosphate, Dibasic must NEVER be used in the following conditions:
Magnesium Phosphate, Dibasic is generally considered safe during pregnancy when used within the Recommended Dietary Allowance (RDA). According to the American College of Obstetricians and Gynecologists (ACOG), magnesium is often used to manage pregnancy-related conditions, but high-dose, long-term use should be avoided unless medically necessary.
Magnesium is a natural component of breast milk. Standard doses of Magnesium Phosphate, Dibasic are considered compatible with breastfeeding. The infant's magnesium levels are unlikely to be affected by maternal supplementation at standard doses.
Approved for use in children under medical supervision. It is vital to ensure the child does not exceed the upper tolerable intake level (UL) for their age group to avoid diarrhea and electrolyte imbalances.
Magnesium Phosphate, Dibasic works by providing exogenous (external) sources of Mg2+ and HPO4 2- ions. Magnesium acts as a physiological calcium channel blocker and a cofactor for the Na+/K+-ATPase pump. Phosphorus, in the form of phosphate, is essential for the formation of 2,3-diphosphoglycerate (2,3-DPG) in red blood cells, which regulates oxygen delivery to tissues.
The onset of action for electrolyte replacement is typically within 1 to 2 hours of oral ingestion, though the full effect on bone mineralization or chronic deficiency may take weeks of consistent therapy. The duration of effect depends on the patient's renal function and baseline mineral status.
| Parameter | Value |
|---|---|
| Bioavailability | 30% - 40% (Oral) |
| Protein Binding | 30% (to Albumin) |
Common questions about Magnesia Phos
Magnesium Phosphate, Dibasic is primarily used as a dietary supplement to treat or prevent magnesium and phosphorus deficiencies. It plays a vital role in supporting bone health, muscle function, and energy production within the cells. Healthcare providers may also use it as a phosphate binder in specific clinical scenarios to manage mineral levels. Additionally, it can sometimes be found in antacid preparations to help relieve symptoms of acid indigestion. Always consult a doctor to ensure it is appropriate for your specific health needs.
The most common side effect reported by patients is diarrhea, which occurs because magnesium salts have an osmotic effect that draws water into the bowels. Some individuals may also experience stomach cramps, nausea, or a bloated feeling after taking the supplement. These effects are usually dose-dependent and can often be minimized by taking the medication with food. If diarrhea becomes severe or persistent, it is important to contact a healthcare provider to prevent dehydration. Most mild side effects resolve on their own as the body adjusts to the supplement.
While there is no direct chemical interaction between alcohol and Magnesium Phosphate, Dibasic, moderation is strongly advised. Chronic alcohol use is known to deplete the body's magnesium stores by increasing renal excretion, which may counteract the benefits of the supplement. Additionally, both alcohol and magnesium can irritate the gastrointestinal tract, potentially worsening side effects like diarrhea or nausea. If you choose to consume alcohol, discuss the frequency and amount with your doctor to ensure it does not interfere with your treatment plan. Your healthcare provider can provide personalized guidance based on your overall health.
Magnesium Phosphate, Dibasic is generally considered safe during pregnancy when used at standard nutritional doses recommended by a healthcare provider. Magnesium is essential for the healthy development of the fetal skeleton and for maintaining the mother's blood pressure. However, taking excessively high doses without medical supervision can be risky for both the mother and the developing baby. Pregnant women should always consult their obstetrician before starting any new supplement to determine the correct dosage. Your doctor will monitor your mineral levels to ensure they stay within a healthy range for pregnancy.
The time it takes for Magnesium Phosphate, Dibasic to work depends on the condition being treated. For acute issues like indigestion or low magnesium levels in the blood, some effects may be noticed within a few hours of ingestion. However, for chronic conditions like bone health support or correcting a long-term deficiency, it may take several weeks of consistent use to see significant clinical improvements. Regular blood tests are often necessary to track progress and ensure the dosage is effective. Your healthcare provider will advise you on the expected timeline for your specific situation.
In most cases, Magnesium Phosphate, Dibasic can be stopped suddenly without experiencing withdrawal symptoms. However, if you are taking the supplement to treat a diagnosed deficiency, stopping it may cause your magnesium or phosphate levels to fall back into an unhealthy range. This could lead to a return of symptoms like muscle cramps, fatigue, or irregular heartbeat. It is always best to discuss your intention to stop the supplement with your healthcare provider first. They can help you determine if your dietary intake is sufficient to maintain healthy levels without the supplement.
If you miss a dose of Magnesium Phosphate, Dibasic, you should take it as soon as you remember. However, if it is already close to the time for your next scheduled dose, it is better to skip the missed dose and continue with your regular routine. You should never take two doses at once to make up for a missed one, as this increases the risk of gastrointestinal side effects like diarrhea. Keeping a consistent schedule helps maintain stable mineral levels in your body. If you frequently forget doses, consider using a pill organizer or setting a daily reminder on your phone.
There is currently no clinical evidence to suggest that Magnesium Phosphate, Dibasic causes weight gain. In fact, magnesium is involved in glucose metabolism and energy production, which are key components of maintaining a healthy weight. Some patients may experience a slight change in weight due to changes in water retention or bowel habits, but this is not typically significant. If you notice sudden or unexplained weight gain while taking this supplement, you should consult your doctor to rule out other underlying causes. It is important to focus on a balanced diet and exercise alongside any supplementation.
Magnesium Phosphate, Dibasic can interact with several other medications, so caution is required. It can bind to certain antibiotics, such as tetracyclines and quinolones, preventing them from being absorbed properly by the body. It may also interfere with the absorption of osteoporosis drugs (bisphosphonates) and thyroid hormones. To avoid these interactions, it is generally recommended to space these medications several hours apart from your magnesium dose. Always provide your doctor or pharmacist with a full list of all medications and herbal supplements you are currently taking.
Yes, Magnesium Phosphate, Dibasic is widely available as a generic mineral supplement and is often found in various over-the-counter multi-mineral formulations. Generic versions are required by the FDA to have the same quality and stability as brand-name products. Because it is an inorganic mineral compound, it is relatively inexpensive and accessible. You can find it in health food stores, pharmacies, and online retailers. When purchasing a generic version, ensure the label specifies the amount of 'elemental' magnesium or phosphorus to ensure you are receiving the correct dose recommended by your doctor.
Other drugs with the same active ingredient (Magnesium Phosphate, Dibasic)
> Warning: Stop taking Magnesium Phosphate, Dibasic and call your doctor immediately if you experience any of these:
Prolonged use of high-dose magnesium and phosphate supplements can lead to an imbalance in other electrolytes, such as calcium and potassium. Chronic use in patients with undiagnosed renal issues may lead to soft tissue calcification (mineral deposits in organs).
No FDA black box warnings have been issued for Magnesium Phosphate, Dibasic as of 2026. However, it carries significant warnings for use in patients with severe renal failure.
Report any unusual symptoms to your healthcare provider.
Healthcare providers typically order the following tests for patients on long-term therapy:
Magnesium Phosphate, Dibasic generally does not affect the ability to drive or operate machinery. However, if you experience dizziness or extreme fatigue due to electrolyte shifts, avoid these activities.
Chronic alcohol consumption can deplete magnesium levels in the body. While there is no direct contraindication, alcohol may worsen the gastrointestinal side effects of the supplement.
This medication can usually be stopped without a tapering schedule. However, if you are taking it for a chronic deficiency, stopping suddenly may cause your magnesium levels to drop again.
> Important: Discuss all your medical conditions with your healthcare provider before starting Magnesium Phosphate, Dibasic.
Magnesium Phosphate, Dibasic may cause false elevations in serum magnesium and phosphorus tests if the blood is drawn too soon after a dose. It may also interfere with certain colorimetric assays used in clinical laboratories.
> Important: Tell your doctor about ALL medications, supplements, and herbal products you are taking.
Patients with known hypersensitivity to any magnesium salts or phosphate salts should avoid this product. While rare, allergic reactions can occur in individuals sensitive to the trihydrate crystalline structure.
> Important: Your healthcare provider will evaluate your complete medical history before prescribing Magnesium Phosphate, Dibasic.
For patients with moderate renal impairment (GFR 30-60 mL/min), doses should be reduced by 50%. In severe renal impairment (GFR < 30 mL/min), the drug is generally contraindicated.
No dosage adjustments are needed for hepatic impairment, as the liver does not play a role in the clearance of this mineral compound.
> Important: Special populations require individualized medical assessment.
| Tmax | 2 - 4 hours |
| Metabolism | None (Inorganic Mineral) |
| Excretion | Renal (Primary) |
Classified as an Electrolyte/Mineral Supplement. It shares therapeutic similarities with Magnesium Citrate, Magnesium Oxide, and Potassium Phosphate.