How LOKELMA works

LOKELMA is a modern K+ binder that preferentially captures K+ and exchanges it for hydrogen and sodium.1,2 LOKELMA has a unique crystal lattice structure.3 LOKELMA is insoluble and does not expand in water, so it is not expected to swell within the GI tract.2

Watch the video to find out more about LOKELMA's mechanism of action.

LOKELMA Mechanism of Action LOKELMA Mechanism of Action

Features of Potassium Binders

LOKELMA Sodium Polystyrene Sulfonate3* Veltassa® (patiromer) for oral suspension4
Calcium-free Yes Yes No
Selectivity Binds K+† Binds K+, Ca+, and Mg+ Binds K+ and Mg+
Molecular composition Non-polymer Polymer Polymer
Site of K+ capture in lumen of GI tract Small and large Intestine2‡ Primarily large intestine Primarily colon
Sodium content for recommended maintenance dose range 400 mg qod-1200 mg daily|| 1500 mg-6000 mg daily¶# 0

*Brand names for sodium polystyrene sulfonate (SPS) include Kayexalate® and Kionex®.6

In vitro, LOKELMA has a high affinity for K+, even in the presence of other cations such as calcium and magnesium.1,2

In vitro study; based on simulated intestinal fluid.2

§Based on nonclinical and early phase studies.5

||The sodium content/unit dose of LOKELMA is 400 mg/5 g. The recommended maintenance dose range for LOKELMA is 5 g every other day to 15 g daily.1

The in vivo efficiency of sodium-potassium exchange resins is approximately 33 percent; hence, about one third of the resin’s actual sodium content is delivered to the body.3

#The sodium content/unit dose of SPS is 1500 mg/15 g. The recommended dose for SPS is 15 g 1 to 4 times daily.3

LOKELMA causes a small dose-dependent increase in serum bicarbonate concentrations (1.1 mEq/L at 5 g once daily, 2.3 mEq/L at 10 g once daily, and 2.6 mEq/L at 15 g once daily as compared with a mean increase of 0.6 mEq/L in patients treated with placebo). The clinical significance of this finding is unclear.1

Clinical pharmacology does not correlate with efficacy or safety.

Veltassa is a registered trademark of Relypsa, Inc., a Vifor Pharma Group Company.

Kayexalate is a registered trademark of Concordia Pharmaceuticals, Inc.

Kionex is a registered trademark of Paddock Laboratories, LLC.

GI=gastrointestinal; qod=every other day; SPS=sodium polystyrene sulfonate.

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IMPORTANT SAFETY INFORMATION FOR LOKELMA® (sodium zirconium cyclosilicate)

WARNINGS AND PRECAUTIONS:

  • Gastrointestinal Adverse Events in Patients with Motility Disorders: Avoid LOKELMA in patients with severe constipation, bowel obstruction or impaction, including abnormal post-operative bowel motility disorders. LOKELMA has not been studied in patients with these conditions and it may be ineffective and may worsen gastrointestinal conditions.
  • Edema: Each 5-g dose of LOKELMA contains approximately 400 mg of sodium, but the extent of absorption by the patient is unknown. In clinical trials of LOKELMA in patients who were not on dialysis, edema was observed and was generally mild to moderate in severity and was more commonly seen in patients treated with 15 g once daily. Monitor for signs of edema, particularly in patients who should restrict their sodium intake or are prone to fluid overload (eg, heart failure or renal disease). Advise patients to adjust dietary sodium, if appropriate. Increase the dose of diuretics as needed.
  • In a clinical trial of LOKELMA in patients on chronic hemodialysis in which most patients were treated with doses of 5 g to 10 g once daily on non-dialysis days, there was no difference in the mean change from baseline in interdialytic weight gain (a measure of fluid retention) between the LOKELMA and placebo groups.
  • Hypokalemia in Patients on Hemodialysis: Patients on hemodialysis may be prone to acute illness that can increase the risk of hypokalemia on LOKELMA (eg, illnesses associated with decreased oral intake, diarrhea). Consider adjusting LOKELMA dose based on potassium levels in these settings.

ADVERSE REACTIONS: The most common adverse reaction in non-dialysis patients with LOKELMA was mild to moderate edema. In placebo-controlled trials up to 28 days, edema was reported in 4.4%, 5.9%, 16.1% of non-dialysis patients treated with 5 g, 10 g, and 15 g of LOKELMA once daily, respectively vs 2.4% of non-dialysis patients receiving placebo.

DRUG INTERACTIONS: LOKELMA can transiently increase gastric pH. In general, oral medications with pH-dependent solubility should be administered at least 2 hours before or 2 hours after LOKELMA. Spacing is not needed if it has been determined the concomitant medication does not exhibit pH-dependent solubility.

INDICATION AND LIMITATION OF USE

LOKELMA is indicated for the treatment of hyperkalemia in adults.

LOKELMA should not be used as an emergency treatment for life-threatening hyperkalemia because of its delayed onset of action.

DOSING

  • Non-hemodialysis Patients
    For initial treatment of hyperkalemia, the recommended starting dose is 10 g administered three times a day up to 48 hours. For maintenance treatment, the recommended starting dose is 10 g once daily. Monitor serum potassium and adjust dose of LOKELMA at 1-week intervals or longer in increments of 5 g based on serum potassium and desired target range. The recommended maintenance dose range is from 5 g every other day to 15 g daily. Discontinue or decrease the dose of LOKELMA if serum potassium is below the desired target range.
  • Hemodialysis Patients
    For patients on chronic hemodialysis, administer LOKELMA only on non‑dialysis days. The recommended starting dose is 5 g once daily on non-dialysis days. Consider a starting dose of 10 g once daily on non-dialysis days in patients with serum potassium greater than 6.5 mEq/L. Monitor serum potassium and adjust the dose of LOKELMA based on the pre-dialysis serum potassium value after the long interdialytic interval and desired target range. During initiation and after dose adjustment, assess serum potassium after one week. Discontinue or decrease the dose of LOKELMA if serum potassium falls below the desired target range based on pre-dialysis value after the long interdialytic interval or the patient develops clinically significant hypokalemia. The recommended maintenance dose range is from 5 g to 15 g once daily, on non-dialysis days.

Please see full Prescribing Information for LOKELMA.

IMPORTANT SAFETY INFORMATION FOR LOKELMA® (sodium zirconium cyclosilicate)

WARNINGS AND PRECAUTIONS:

  • Gastrointestinal Adverse Events in Patients with Motility Disorders: Avoid LOKELMA in patients with severe constipation, bowel obstruction or impaction, including abnormal post-operative bowel motility disorders. LOKELMA has not been studied in patients with these conditions and it may be ineffective and may worsen gastrointestinal conditions.
  • Edema: Each 5-g dose of LOKELMA contains approximately 400 mg of sodium, but the extent of absorption by the patient is unknown. In clinical trials of LOKELMA in patients who were not on dialysis, edema was observed and was generally mild to moderate in severity and was more commonly seen in patients treated with 15 g once daily. Monitor for signs of edema, particularly in patients who should restrict their sodium intake or are prone to fluid overload (eg, heart failure or renal disease). Advise patients to adjust dietary sodium, if appropriate. Increase the dose of diuretics as needed.
  • In a clinical trial of LOKELMA in patients on chronic hemodialysis in which most patients were treated with doses of 5 g to 10 g once daily on non-dialysis days, there was no difference in the mean change from baseline in interdialytic weight gain (a measure of fluid retention) between the LOKELMA and placebo groups.
  • Hypokalemia in Patients on Hemodialysis: Patients on hemodialysis may be prone to acute illness that can increase the risk of hypokalemia on LOKELMA (eg, illnesses associated with decreased oral intake, diarrhea). Consider adjusting LOKELMA dose based on potassium levels in these settings.

ADVERSE REACTIONS: The most common adverse reaction in non-dialysis patients with LOKELMA was mild to moderate edema. In placebo-controlled trials up to 28 days, edema was reported in 4.4%, 5.9%, 16.1% of non-dialysis patients treated with 5 g, 10 g, and 15 g of LOKELMA once daily, respectively vs 2.4% of non-dialysis patients receiving placebo.

DRUG INTERACTIONS: LOKELMA can transiently increase gastric pH. In general, oral medications with pH-dependent solubility should be administered at least 2 hours before or 2 hours after LOKELMA. Spacing is not needed if it has been determined the concomitant medication does not exhibit pH-dependent solubility.

INDICATION AND LIMITATION OF USE

LOKELMA is indicated for the treatment of hyperkalemia in adults.

LOKELMA should not be used as an emergency treatment for life-threatening hyperkalemia because of its delayed onset of action.

DOSING

  • Non-hemodialysis Patients
    For initial treatment of hyperkalemia, the recommended starting dose is 10 g administered three times a day up to 48 hours. For maintenance treatment, the recommended starting dose is 10 g once daily. Monitor serum potassium and adjust dose of LOKELMA at 1-week intervals or longer in increments of 5 g based on serum potassium and desired target range. The recommended maintenance dose range is from 5 g every other day to 15 g daily. Discontinue or decrease the dose of LOKELMA if serum potassium is below the desired target range.
  • Hemodialysis Patients
    For patients on chronic hemodialysis, administer LOKELMA only on non‑dialysis days. The recommended starting dose is 5 g once daily on non-dialysis days. Consider a starting dose of 10 g once daily on non-dialysis days in patients with serum potassium greater than 6.5 mEq/L. Monitor serum potassium and adjust the dose of LOKELMA based on the pre-dialysis serum potassium value after the long interdialytic interval and desired target range. During initiation and after dose adjustment, assess serum potassium after one week. Discontinue or decrease the dose of LOKELMA if serum potassium falls below the desired target range based on pre-dialysis value after the long interdialytic interval or the patient develops clinically significant hypokalemia. The recommended maintenance dose range is from 5 g to 15 g once daily, on non-dialysis days.

Please see full Prescribing Information for LOKELMA.