Cholestyramine Dosing: Two Packets Daily
Two standard packets of cholestyramine powder per day equals 8 grams of anhydrous cholestyramine resin 1.
Packet Composition
Each standard cholestyramine packet contains:
- 9 grams of total powder
- 4 grams of active anhydrous cholestyramine resin
Therefore, two packets provide:
- 18 grams total powder
- 8 grams active cholestyramine resin
Clinical Context for Dosing
The FDA-approved dosing recommendations 1 specify:
- Starting dose: 1 packet (4g resin) once or twice daily
- Maintenance dose: 2-4 packets daily (8-16g resin), divided into two doses
- Maximum dose: 6 packets daily (24g resin)
Two packets daily (8g resin) represents the lower end of the typical maintenance dose range and is a reasonable starting point for most indications 1.
Dosing Strategy by Indication
For bile acid diarrhea, the Canadian Association of Gastroenterology guidelines 2 recommend:
- Start at 2-4 g/day (0.5-1 packet)
- Gradual titration is essential to minimize gastrointestinal side effects
- Maximum studied doses range from 4-24 g/day depending on response
Important caveat: The guidelines emphasize that gradual dose titration reduces side effects, increases compliance, and potentially reduces costs 2. Starting at two packets daily may cause more gastrointestinal intolerance than starting with one packet and titrating upward.
Preparation
Always mix the powder with at least 2-3 ounces of water or non-carbonated beverage—never take in dry form 1. The powder can also be mixed with highly fluid soups or pulpy fruits like applesauce.