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bacteriostatic-water

Page 7 of 7 · 149 questions tagged bacteriostatic-water.

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149 questions · sorted by votes · page 7 of 7

2 votes 5 answers23k views
If I reconstitute a 20 mg vial with 2.5 mL of bacteriostatic water, what concentration do I end up with?

Stated plainly: 20 mg · 2.5 mL · bacteriostatic water. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of…

reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

313 questionsdiluent-volume
diluent-volume

Choosing how much diluent to add, which is really a question about what you want your measurement resolution to be. Larger volumes buy you…

295 questionsdosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

764 questionsbacteriostatic-water
bacteriostatic-water

Water for injection containing roughly 0.9 per cent benzyl alcohol as a bacteriostatic agent. It suppresses growth in a multiple-withdrawal vial;…

149 questionsasked by day_seven_trough 6.7k · 2.2 years ago
2 votes0 answers1.6k views
Is a GLP-1 receptor agonist at 4 mg/mL stable enough for eight weeks of multi-withdrawal use?

Numbers first: a GLP-1 receptor agonist · 4 mg/mL · eight weeks. I would rather be corrected now than propagate something wrong. I am specifically not interested in a…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questionsbacteriostatic-water
bacteriostatic-water

Water for injection containing roughly 0.9 per cent benzyl alcohol as a bacteriostatic agent. It suppresses growth in a multiple-withdrawal vial;…

149 questionsshelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questionsasked by Dr_Ravi_Selvarajah 35k · 6 months ago
1 vote 5 answers9.6k views
Does reconstituting dulaglutide with phosphate-buffered diluent change anything I should know about?

Conditions: dulaglutide · phosphate-buffered diluent. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody knows, I would…

reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

313 questionsbacteriostatic-water
bacteriostatic-water

Water for injection containing roughly 0.9 per cent benzyl alcohol as a bacteriostatic agent. It suppresses growth in a multiple-withdrawal vial;…

149 questionspeptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questionsdulaglutide
dulaglutide

A once-weekly GLP-1 receptor agonist built on an Fc fusion rather than fatty-acid acylation. Use this tag for questions about the fusion-protein…

200 questionsasked by retest_please 9.7k · 9 months ago
1 vote 4 answers3.6k views
Is orforglipron at 20 mg/mL stable enough for sixteen weeks of multi-withdrawal use?

Stated plainly: orforglipron · 20 mg/mL · sixteen weeks. This is asserted often enough that I assumed it was established, and then I went looking for the source. I…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questionsbacteriostatic-water
bacteriostatic-water

Water for injection containing roughly 0.9 per cent benzyl alcohol as a bacteriostatic agent. It suppresses growth in a multiple-withdrawal vial;…

149 questionsshelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questionsorforglipron
orforglipron

A non-peptide, orally bioavailable small-molecule GLP-1 receptor agonist studied in the ATTAIN programme. It is not a peptide, which changes…

219 questionsasked by dmitri_savchuk 27k · 2 months ago
1 vote 5 answers3.1k views
How is a beyond-use date set for compounded semaglutide in sterile water for injection?

What I have: semaglutide · sterile water for injection. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have already made…

compounding
compounding

Compounded preparations: what a 503A and a 503B facility may legally prepare and when, base versus salt forms, beyond-use dating under USP…

61 questionsshelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questionsbacteriostatic-water
bacteriostatic-water

Water for injection containing roughly 0.9 per cent benzyl alcohol as a bacteriostatic agent. It suppresses growth in a multiple-withdrawal vial;…

149 questionssemaglutide
semaglutide

A GLP-1 receptor agonist with a fatty-acid-acylated backbone and a roughly one-week half-life, marketed for type 2 diabetes and for weight…

470 questionssterile-water
sterile-water

Preservative-free sterile water for injection: appropriate for a single-withdrawal presentation, a poor choice for anything you intend to open…

35 questionsasked by rune_thoresen 16k · 8 months ago