# A 60-year-old client is starting dabigatran 150 mg orally twice daily for non-valvular atrial fibrillation. Which instruction about storage and administration is correct?

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> url: https://mymerci.kr/pages/nclex_q.php?qn_id=374977&lang=en  
> language: en  
> subject: Medical Emergencies  
> category: PA

## Question

A 60-year-old client is starting dabigatran 150 mg orally twice daily for non-valvular atrial fibrillation. Which instruction about storage and administration is correct?

## Option

1. Transfer the capsules to a weekly pill organizer for convenience; if difficulty swallowing occurs, the capsule can be opened and the contents mixed with a small amount of apple sauce; the mixture should be swallowed immediately without chewing; any remaining mixture may be refrigerated for up to 24 hours and then discarded if not consumed.
2. Store the capsules in the refrigerator at 36°F to 46°F (2°C to 8°C) to maintain their stability; keep them in the original container with the desiccant, and allow the bottle to reach room temperature before opening to prevent moisture condensation inside the bottle.
3. Transfer the capsules from the original bottle into a weekly pill organizer with separate compartments for each day; this will help the client remember to take the medication; the organizer can be kept in a cool, dry place, and the original bottle should be retained for refills.
4. Store the capsules in the original bottle or blister pack with the desiccant; keep the bottle tightly closed; once opened, use the contents within 4 months and discard any unused capsules; swallow the capsule whole with water — do NOT break, chew, open, or crush. **✔ Correct answer**

**Correct answer: 4**

## Explanation

Dabigatran — humidity-sensitive capsule
Dabigatran etexilate (Pradaxa) is a direct thrombin inhibitor pro-drug formulated as a capsule containing tartaric acid pellets. The drug is extremely sensitive to moisture; once exposed to humidity it loses potency rapidly, and breaking, chewing, opening, or crushing the capsule increases bioavailability ~75% and dramatically raises bleeding risk.

Storage and administration rules:
• Keep capsules in the original manufacturer bottle (with desiccant) or blister pack. The desiccant absorbs moisture.
• Keep the bottle tightly closed at room temperature, away from moisture.
• Once opened, use within 4 months; discard any remaining capsules at 4 months.
• Do NOT transfer to a pill organizer or other container — moisture exposure ruins the drug. (Other capsules can be transferred; dabigatran is the exception.)
• Swallow whole with water. Do NOT break, chew, open, or crush — opening doubles bioavailability and causes severe bleeding.
• Do NOT refrigerate.

Other key teaching:
• 150 mg BID is standard for stroke prevention in afib; 75 mg BID for CrCl 15–30 (but generally avoided if CrCl

## In-depth explanation

Clinical reasoning summary
Dabigatran — humidity-sensitive capsule
Dabigatran etexilate (Pradaxa) is a direct thrombin inhibitor pro-drug formulated as a capsule containing tartaric acid pellets. The drug is extremely sensitive to moisture; once exposed to humidity it loses potency rapidly, and breaking, chewing, opening, or crushing the capsule increases bioavailability ~75% and dramatically raises bleeding risk.

Storage and administration rules:
• Keep capsules in the original manufacturer bottle (with desiccant) or blister pack. The desiccant absorbs moisture.
• Keep the bottle tightly closed at room temperature, away from moisture.
• Once opened, use within 4 months; discard any remaining capsules at 4 months.
• Do NOT transfer to a pill organizer or other container — moisture exposure ruins the drug. (Other capsules can be transferred; dabigatran is the exception.)
• Swallow whole with water. Do NOT break, chew, open, or crush — opening doubles bioavailability and causes severe bleeding.
• Do NOT refrigerate.

Other key teaching:
• 150 mg BID is standard for stroke prevention in afib; 75 mg BID for CrCl 15–30 (but generally avoided if CrCl

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