PTCB PTCE Exam - Topic 1 Question 119 Discussion

Actual exam question for PTCB's PTCE exam

Question #: 119
Topic #: 1

[All PTCE Questions]

Famotidine oral suspensionremains stable for a maximum of how many days following reconstitution?

C21

D30

Show Suggested Answer

Suggested Answer: C

Famotidine suspension is stable for 21 days when stored in the refrigerator (2C--8C or 36F--46F).

Reference:FDA Famotidine Stability Guidelines, USP Storage Guidelines.

by Celia at Nov 20, 2025, 04:45 PM

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Kenneth

10 hours ago

Wait, are you sure about 30 days? That seems too long.

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Caitlin

6 days ago

Definitely 21 days, right?

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Mary

11 days ago

I thought it was only 7 days.

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Madelyn

16 days ago

It's 30 days after reconstitution!

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Jarod

21 days ago

I'll go with C) 21 days. Anything less and I'd have to reconstitute it every week. That's way too much work.

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Rosalia

26 days ago

Haha, the correct answer is obviously A) 1 day. Famotidine suspension is like a ticking time bomb!

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Lynna

1 month ago

Definitely B) 7 days. Who needs a suspension that lasts for 21 or 30 days? I'll just take the tablet version.

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Edwin

1 month ago

I thought it was only 1 day, but I might be confusing it with a different oral suspension.

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Dorathy

1 month ago

I’m leaning towards 30 days, but I could be mixing it up with another medication.

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Jovita

2 months ago

I remember practicing a question about reconstituted medications, and I feel like 21 days was mentioned for something similar.

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Nidia

2 months ago

I think famotidine suspension is stable for 7 days, but I'm not completely sure.

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Kindra

2 months ago

Alright, time to apply my knowledge. Famotidine is a pretty common drug, so I bet the stability data is well-established. I'll eliminate the options that don't seem plausible.

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Leonora

2 months ago

I think it's 7 days.

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Ira

2 months ago

Wait, is this asking about the reconstituted suspension or the original powder? I want to make sure I don't mix those up. Gotta read the question closely.

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Kassandra

2 months ago

I think the answer is C) 21 days. That's what I learned in my pharmacology class.

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Goldie

3 months ago

Ah, I've seen questions like this before. It's all about understanding the typical stability profiles for different liquid medication formulations. I'm pretty confident I can nail this one.

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Aileen

3 months ago

D) 30 days sounds about right. I remember reading that in the drug monograph.

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Carla

3 months ago

Okay, let me think this through. Famotidine is a common acid reducer, so the stability of the reconstituted suspension is an important consideration. I'll have to weigh the options carefully.

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Billy

3 months ago

Hmm, I think this is asking about the shelf life of the reconstituted suspension. I'll need to remember the key stability information for different drug formulations.

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