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MRP: Rs. 75 for 1 packet(s) (15 GM sachet each)
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Composition for K LOCK

Polystyrene Sulfonate(NA)

food interaction for K LOCK

alcohol interaction for K LOCK

pregnancy interaction for K LOCK

lactation interaction for K LOCK

It can be taken with or without food, but it is better to take it at a fixed time.
Interaction with alcohol is unknown. Please consult your doctor.
It may be unsafe to use during pregnancy.
Animal studies have shown adverse effects on the foetus, however, there are limited human studies. The potential benefits may outweigh the risks. Please consult your doctor.
Unknown. Human and animal studies are not available. Please consult your doctor.


Polystyrene Sulfonate(NA)


K lock sachet is used for treatment of hyperkalemia (high levels of blood potassium).

How it works

K lock sachet belongs to a class of drugs called cation exchange resins. It acts by removing the excess potassium present in the blood.

Common side effects

Nausea, Abdominal pain, Bleeding, Confusion, Constipation, Convulsion, Diarrhoea, Decreased potassium level in blood, Loss of appetite, Muscle weakness, Tachycardia, Heart rate irregular, Vomiting


No substitutes found

Expert advice for K LOCK

  • Do not use magnesium hydroxide (milk of magnesia) or sorbitol along with polystyrene sulfonate.
  • Do not use if you have low potassium levels in blood.
  • Do not use in patients with risk of developing constipation or impaction (bowel blockage).
  • Doctor’s advice should be considered in case of disease conditions such as severe congestive heart failure, severe high blood pressure, and kidney disease or marked swelling.
  • Inform your doctor if you are on sodium-restricted diet.
  • Consult your doctor before taking polystyrene sulfonate if you are pregnant, planning to become pregnant or are breast-feeding.

Frequently asked questions for K LOCK

Polystyrene Sulfonate

Q. What is polystyrene sulfonate?
Polystyrene sulfonate is used for treatment of hyperkalemia (high levels of blood potassium). Patient should follow the advice of doctor regarding its use.
Q. Does sodium polystyrene sulfonate work?
Sodium polystyrene sulfonate works at the prescribed dose and duration for treatment of hyperkalemia as advised by your doctor.


Content on this page was last updated on 07 August, 2015, by Dr. Varun Gupta (MD Pharmacology)