When Prussian Blue Capsules are used for promoting excretion therapy, attention should be paid to the three major risks of hypokalemia, constipation, and drug interactions.

1. Prevention and monitoring of hypokalemia

Risk identification: Prussian blue can bind to potassium ions in the intestine, and long-term use may cause a decrease in blood potassium, manifested as muscle weakness, bloating, palpitations, or arrhythmia.

Dietary supplements: Encourage eating more potassium rich foods such as bananas, oranges, potatoes, and tomatoes, and adjust daily intake according to tolerance.

Regular testing: For those who have been taking medication for more than one week or have the above symptoms, they should follow the doctor's advice to draw blood and monitor their blood potassium levels.

Potassium supplementation if necessary: If blood potassium is below the lower limit of normal, oral or intravenous potassium supplementation should be done under the guidance of a doctor, and excessive supplementation should not be done on one's own.

2. Prevention and treatment of constipation

Increase water intake: Drink at least 1.5-2 liters of water per day (if heart and kidney function allows) to keep the intestinal contents moist.

Dietary fiber regulation: Increase soluble fiber in moderation (such as oats and apple puree), but avoid sudden and excessive intake of insoluble fiber (such as bran) to avoid exacerbating bloating.

Moderate activity: Take daily walks or engage in light physical activity to promote intestinal peristalsis, subject to physical limitations.

Principles of using laxatives: If constipation persists for more than 3 days, mild penetrative laxatives (such as polyethylene glycol) can be used under the guidance of a doctor, and irritant laxatives are prohibited to avoid interfering with the drug's effect.

3. Avoidance of drug interactions

Drugs that affect the absorption of Prussian blue: antacids (such as aluminum hydroxide, calcium carbonate) and preparations containing magnesium and calcium can compete with Prussian blue for binding sites in the intestine, reducing its excretion promoting effect. It is recommended to take the two at least 2 hours apart.

Medications affected by Prussian blue: This product may adsorb some oral medications (such as thyroid hormone, certain antibiotics), reducing their absorption. When using combination therapy, the interval should be at least 2-3 hours.

The risk of using laxatives in combination: Oily laxatives (such as liquid paraffin) may accelerate intestinal peristalsis, shorten the contact time between Prussian blue and toxins, and reduce efficacy. Therefore, combination use should be avoided.