Skip to main content
HomeDrug Comparisons
Drug bottle and Pill

Compare Fosrenol vs. Auryxia

Head-to-head comparisons of medication uses, side effects, warnings, and more.

Key takeaways

Lanthanum (Fosrenol) and Auryxia (ferric citrate) are both phosphate binders used to lower high blood phosphate levels in people with advanced kidney disease. However, they have some key differences. Lanthanum is calcium-free and must be chewed or crushed before swallowing, while Auryxia should be swallowed whole and contains iron, which can also help treat iron deficiency anemia. Because of the iron content, Auryxia can cause dark stools and has a risk of iron overload. Lanthanum can cause digestive tract blockages and may interfere with X-ray results. Both medications need to be taken with meals to work effectively, but Auryxia requires more frequent blood tests to monitor iron levels. Additionally, Lanthanum is available in powder form for those who have trouble chewing tablets, whereas Auryxia is not.

  • Lanthanum (Fosrenol)
    Auryxia (ferric citrate)
  • Lanthanum (Fosrenol)
    Auryxia (ferric citrate)

  • Summary of Fosrenol vs. Auryxia

    Summary for Phosphate binder
    Prescription only

    Lanthanum (Fosrenol) works well to lower phosphorus levels in the blood without affecting calcium levels in people with advanced kidney disease, but it can be expensive and you need to take it with meals.

    Summary for Phosphate binder
    Prescription only

    Auryxia (ferric citrate) is a phosphate binder used to treat high phosphorus levels (hyperphosphatemia) in adults with chronic kidney disease (CKD) on dialysis. It's also used as an iron supplement to treat iron-deficiency anemia (IDA) in adults with CKD who aren't on dialysis. Auryxia (ferric citrate) comes as a 210 mg tablet and is taken by mouth three times per day with meals. It's not available as a generic. Common side effects include dark stools, diarrhea, and constipation.

  • Indications of Fosrenol vs. Auryxia

    Indications for
    •High blood phosphate levels in advanced kidney disease
    Indications for
    •High phosphorus levels (hyperphosphatemia) in adults with chronic kidney disease (CKD) on dialysis
    •Iron-deficiency anemia (IDA) in adults with CKD not on dialysis

  • Pros and Cons of Fosrenol vs. Auryxia

    Pros and Const for Phosphate binder
    Pros
    •Works as well as other phosphate binders to lower blood phosphate levels
    •Easy to take since lanthanum (Fosrenol) comes in powder form, and the tablet form can be crushed or chewed
    •Calcium-free, which means lanthanum (Fosrenol) doesn't come with the risk of high calcium levels like some other phosphate binders
    Cons
    •Like other phosphate binders, lanthanum (Fosrenol) must be taken with meals.
    •More expensive than other phosphate binders
    •Not a good option for people with certain bowel disorders, serious liver disease, or who have trouble chewing or crushing tablets (tablet form only)
    Pros and Const for Phosphate binder
    Pros
    •Good option for lowering phosphorus levels and raising iron stores
    •Dose can be adjusted based on your blood test results
    •Specifically approved for people with CKD
    Cons
    •Needs to be taken up to three times per day with meals
    •Commonly causes dark stools, constipation, and diarrhea
    •Can interact with some medications by changing how they are absorbed

  • Common Side Effects of Fosrenol vs. Auryxia

    Common Side Effects for
    •Nausea (11%)
    •Vomiting (9%)
    •Belly pain (5%)
    Common Side Effects for
    •Dark stools (22%)
    •Diarrhea (21%)
    •Constipation (18%)
    •Nausea (10%)

  • Warnings of Fosrenol vs. Auryxia

    Common Side Effects for
    •Blockage of your digestive tract
    •Interference with X-rays
    Common Side Effects for
    •Iron overdose
    •Accidental iron overdose in children

  • Prices with our coupons for Fosrenol vs. Auryxia

    Learn more about Lanthanum
    Learn more about Auryxia

Compare other Kidney Disease and Hyperphosphatemia drugs

Fosrenol vs AuryxiaFosrenol vs Calcium AcetateFosrenol vs SensiparHectorol vs FosrenolRenagel vs FosrenolRenvela vs FosrenolRocaltrol vs FosrenolVelphoro vs FosrenolHectorol vs RenagelHectorol vs SensiparHectorol vs ZemplarRenagel vs AuryxiaRenagel vs Calcium AcetateRenagel vs SensiparRenagel vs ZemplarRenvela vs AuryxiaRenvela vs Calcium AcetateRenvela vs RenagelRocaltrol vs HectorolRocaltrol vs RenagelRocaltrol vs SensiparRocaltrol vs ZemplarVelphoro vs Calcium AcetateVelphoro vs RenagelVelphoro vs RenvelaZemplar vs Sensipar
View More

Browse medications

View All

Research prescriptions and over-the-counter medications from A to Z, compare drug prices, and start saving.