Klysmol (Sodium Phosphate Dibasic Heptahydrate, Sodium Dihydrogen Phosphate Monohydrate)

• Klysmol, an osmotic rectal enema, is used for bowel cleansing and preparation of the colon.
• Colonoscopic preparation: clears the colon to improve visualization during the procedure.
• Diagnostic imaging (e.g., barium enema): ensures a clean bowel for accurate imaging.
• Constipation relief: provides rapid evacuation in acute constipation.

• Sodium phosphate dibasic heptahydrate and sodium dihydrogen phosphate monohydrate dissociate in the rectum to release phosphate ions, creating a high‑osmolarity solution. The resulting osmotic gradient draws water from the bloodstream into the colonic lumen, increasing intraluminal volume and stimulating peristalsis, which leads to evacuation of fecal material.

Klysmol may cause a range of adverse reactions, from mild to serious.

Common Side Effects

• Abdominal cramping: mild to moderate discomfort in the lower abdomen.
• Nausea: feeling of queasiness after administration.
• Rectal irritation: burning or itching at the site of administration.
• Diarrhea: loose stools following the enema.
• Electrolyte imbalance (mild): transient changes in serum phosphate or calcium levels.

Serious or Rare Side Effects

• Severe electrolyte disturbance: significant hyperphosphatemia or hypocalcemia that may require medical intervention.
• Renal impairment: acute kidney injury in susceptible individuals.
• Dehydration: marked loss of body fluids leading to hypotension.
• Colonic perforation: rare but life‑threatening tear of the colon wall.
• Colitis: inflammation of the colon secondary to irritation.

Before using Klysmol, consider the following precautions to minimize risks.

• Renal dysfunction: avoid in patients with impaired kidney function.
• Cardiovascular disease: use cautiously in heart failure or hypertension.
• Electrolyte disorders: contraindicated in hyperphosphatemia, hypocalcemia, or severe electrolyte imbalance.
• Dehydration: ensure adequate hydration before administration.
• Pregnancy and lactation: consult a healthcare professional before use.
• Pediatric use: not recommended for children without medical supervision.
• Store at ambient temperature: keep in original container, protect from moisture and direct sunlight.

Klysmol can interact with other medicines, affecting electrolyte balance or renal function.

Major Interactions (Avoid)

• ACE inhibitors or ARBs: may exacerbate hyperkalemia and renal dysfunction.
• Loop or thiazide diuretics: increase risk of electrolyte disturbances.
• Calcium carbonate or other phosphate binders: reduce effectiveness of the enema.
• Potassium‑sparing diuretics: heighten risk of hyperkalemia.
• Renal toxic drugs (e.g., aminoglycosides): additive nephrotoxicity.

Moderate Interactions (Monitor Closely)

• Oral laxatives: may cause excessive fluid loss.
• Antacids containing aluminum or magnesium: can alter phosphate absorption.
• Vitamin D supplements: may affect calcium‑phosphate balance.
• NSAIDs: potential impact on renal function.
• Contrast agents for imaging: monitor renal function when combined.