Linaclotide Dosing and Safety in Patients Receiving Phenobarbital

Dosage Recommendations

• The recommended oral dose of linaclotide for chronic idiopathic constipation is 72 µg or 145 µg once daily, and for irritable bowel syndrome with constipation is 290 µg once daily; the medication should be taken on an empty stomach at least 30 minutes before the first meal of the day【1】【2】.

Adverse‑Event Profile

• Diarrhea is the most common adverse event, occurring in roughly 16 %–20 % of patients treated with linaclotide and leading to treatment discontinuation in about 3 %–4 % of cases; this risk is independent of concurrent phenobarbital therapy【2】.