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shelf-life

Page 4 of 13 · 301 questions tagged shelf-life.

301 questions · sorted by votes · page 4 of 13

27 votes 5 answers22k views
Is minus 20 °C an acceptable storage condition for lyophilised a GLP-1 receptor agonist?

What I am working with: minus 20 °C · a GLP-1 receptor agonist. This is asserted often enough that I assumed it was established, and then I went looking for the…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

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

832 questions
shelf-life
shelf-life

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

301 questions
asked by ruaidhri_o_shea 51k · 2.0 years ago
27 votes5 answers20k views
Is dulaglutide at 20 mg/mL stable enough for six weeks of multi-withdrawal use?

Setup, so nobody has to ask: dulaglutide · 20 mg/mL · six weeks. This has the shape of a fact but I cannot find its origin. What I found instead were three secondary…

peptide-stability
peptide-stability

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

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
asked by nominal_ten 14k · 2.1 years ago
27 votes0 answers19k views
Is liraglutide at 6.67 mg/mL stable enough for four weeks of multi-withdrawal use?

For reference: liraglutide · 6.67 mg/mL · four weeks. Somebody stated this to me confidently and I would like to check it before repeating it. I would accept a…

peptide-stability
peptide-stability

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

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
asked by syringe_ninety 15k · 19 months ago
27 votes5 answers15k views
Is a bacteriostatic water vial still usable seven days after first piercing?

Concretely: bacteriostatic water · seven days. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have already made one…

bacteriostatic-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;…

112 questions
sterility
sterility

Sterility as a test result rather than an adjective. Covers what a sterility test actually measures, why "sterile filtered" on a document is close…

122 questions
shelf-life
shelf-life

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

301 questions
asked by loss_on_drying 47k · 23 months ago
27 votes5 answers14k views
How is a beyond-use date set for compounded tirzepatide in bacteriostatic water?

The specifics, since they change the answer: tirzepatide · bacteriostatic water. I have read the obvious sources and they disagree with each other, so I would rather…

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 questions
shelf-life
shelf-life

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

301 questions
bacteriostatic-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;…

112 questions
asked by siobhan_deasy 16k · 18 months ago
27 votes 3 answers10k views
Is survodutide at 5 mg/mL stable enough for three weeks of multi-withdrawal use?

Concretely: survodutide · 5 mg/mL · three weeks. I want to know whether there is evidence behind this or only repetition. I have checked the obvious registries and…

peptide-stability
peptide-stability

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

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
asked by juan_esquivel 14k · 17 months ago
27 votes 5 answers10k views
Is a GLP-1 receptor agonist at 4 mg/mL stable enough for two weeks of multi-withdrawal use?

What I have: a GLP-1 receptor agonist · 4 mg/mL · two weeks. I am asking for verification rather than opinion, ideally with something I can read myself. It is…

peptide-stability
peptide-stability

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

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
asked by orla_sheridan 14k · 6 months ago
26 votes 4 answers42k views
How long is reconstituted semaglutide or tirzepatide actually stable at 4 °C, and what published data exists behind any of the numbers people quote?

The numbers in circulation for reconstituted shelf life are 28 days, 30 days, 56 days and "as long as it looks clear", and I cannot find a source for any of them that…

shelf-life
shelf-life

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

301 questions
peptide-stability
peptide-stability

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

832 questions
semaglutide
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…

360 questions
tirzepatide
tirzepatide

A dual GIP and GLP-1 receptor agonist. Questions here cover the SURPASS and SURMOUNT programmes, the practical differences from a pure GLP-1…

162 questions
cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

524 questions
asked by zainab_mustafa 16k · 14 months ago
26 votes5 answers39k views
Is 40 °C an acceptable storage condition for lyophilised orforglipron?

Numbers first: 40 °C · orforglipron. I would rather be corrected now than propagate something wrong. I am specifically not interested in a testimonial; I am…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

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

832 questions
shelf-life
shelf-life

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

301 questions
asked by samir_bennani 13k · 2.1 years ago
26 votes0 answers35k views
Is a GLP-1 receptor agonist at 1 mg/mL stable enough for eight weeks of multi-withdrawal use?

Numbers first: a GLP-1 receptor agonist · 1 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,…

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
endotoxin
endotoxin

Bacterial endotoxin: LAL and kinetic chromogenic methods, how an endotoxin limit is derived from a dose, why endotoxin survives autoclaving, and…

14 questions
asked by Dr_Ravi_Selvarajah 42k · 2.3 years ago
26 votes 5 answers18k views
Is a phosphate-buffered diluent vial still usable five days after first piercing?

Details up front: phosphate-buffered diluent · five days. I can find plenty of assertions about this and almost no reasoning, which is usually a sign that nobody has…

bacteriostatic-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;…

112 questions
sterility
sterility

Sterility as a test result rather than an adjective. Covers what a sterility test actually measures, why "sterile filtered" on a document is close…

122 questions
shelf-life
shelf-life

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

301 questions
asked by ahmed_zerouali 19k · 6 months ago
26 votes 4 answers9.3k views
Is 2–8 °C an acceptable storage condition for lyophilised cagrilintide?

Setup, so nobody has to ask: 2–8 °C · cagrilintide. This is asserted often enough that I assumed it was established, and then I went looking for the source. I have…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

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

832 questions
shelf-life
shelf-life

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

301 questions
asked by day_seven_trough 11k · 10 months ago
26 votes 5 answers8.6k views
Is orforglipron at 5 mg/mL stable enough for six weeks of multi-withdrawal use?

Stated plainly: orforglipron · 5 mg/mL · six weeks. This has the shape of a fact but I cannot find its origin. What I found instead were three secondary sources all…

peptide-stability
peptide-stability

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

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
asked by u100_marks 38k · 10 months ago
26 votes 5 answers7.2k views
Is semaglutide at 3.33 mg/mL stable enough for three weeks of multi-withdrawal use?

Concretely: semaglutide · 3.33 mg/mL · three weeks. I want to know whether there is evidence behind this or only repetition. I have checked the obvious registries and…

peptide-stability
peptide-stability

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

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
asked by two_two_micron 15k · 5 months ago
26 votes0 answers5.5k views
What happens to retatrutide after eight weeks at 2–8 °C in solution?

What I am working with: retatrutide · eight weeks · 2–8 °C. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me…

peptide-stability
peptide-stability

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

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
shelf-life
shelf-life

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

301 questions
asked by loss_on_drying 47k · 6 months ago
25 votes 5 answers52k views
How long does survodutide stay within specification at 2–8 °C once reconstituted?

The case in front of me: survodutide · 2–8 °C. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have already made one…

peptide-stability
peptide-stability

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

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
shelf-life
shelf-life

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

301 questions
asked by nils_karlberg 13k · 2.1 years ago
25 votes5 answers41k views
How is a beyond-use date set for compounded a GLP-1 receptor agonist in 0.9% sodium chloride?

What I have: a GLP-1 receptor agonist · 0.9% sodium chloride. I can find plenty of assertions about this and almost no reasoning, which is usually a sign that nobody…

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 questions
shelf-life
shelf-life

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

301 questions
bacteriostatic-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;…

112 questions
asked by forty_two_c 43k · 19 months ago
25 votes5 answers22k views
Is 37 °C an acceptable storage condition for lyophilised oral semaglutide?

Conditions: 37 °C · oral semaglutide. The claim is plausible, which is exactly why I want to check it. I am able to read a paper if someone points me at one. Is there…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

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

832 questions
shelf-life
shelf-life

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

301 questions
asked by g_paskevicius 44k · 8 months ago
25 votes0 answers21k views
What happens to cagrilintide after six weeks at room temperature in solution?

Numbers first: cagrilintide · six weeks · room temperature. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would…

peptide-stability
peptide-stability

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

832 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
shelf-life
shelf-life

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

301 questions
asked by nadia_kowalczyk 14k · 18 months ago
25 votes0 answers18k views
How is a beyond-use date set for compounded orforglipron in phosphate-buffered diluent?

Stated plainly: orforglipron · phosphate-buffered diluent. Everything I have found on this is either a forum aside or a product page, neither of which I trust. I am…

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 questions
shelf-life
shelf-life

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

301 questions
bacteriostatic-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;…

112 questions
asked by thermal_mass 16k · 22 months ago
25 votes 5 answers12k views
Is 4 °C an acceptable storage condition for lyophilised tirzepatide?

Conditions: 4 °C · tirzepatide. The claim is plausible, which is exactly why I want to check it. I am able to read a paper if someone points me at one. Is there data…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

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

832 questions
shelf-life
shelf-life

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

301 questions
asked by gel_pack_warm 13k · 9 months ago
24 votes1 answer20k views
Is 2–8 °C an acceptable storage condition for lyophilised retatrutide?

Details up front: 2–8 °C · retatrutide. I would rather be corrected now than propagate something wrong. I am specifically not interested in a testimonial; I am…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

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

832 questions
shelf-life
shelf-life

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

301 questions
asked by coldbox9 13k · 12 months ago
24 votes5 answers17k views
Is 30 °C an acceptable storage condition for lyophilised mazdutide?

Setup, so nobody has to ask: 30 °C · mazdutide. This has the shape of a fact but I cannot find its origin. What I found instead were three secondary sources all…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
peptide-stability
peptide-stability

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

832 questions
shelf-life
shelf-life

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

301 questions
asked by bea_castellanos 47k · 12 months ago
24 votes 5 answers16k views
Is tirzepatide at 6.67 mg/mL stable enough for four weeks of multi-withdrawal use?

The specifics, since they change the answer: tirzepatide · 6.67 mg/mL · four weeks. Somebody stated this to me confidently and I would like to check it before…

peptide-stability
peptide-stability

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

832 questions
bacteriostatic-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;…

112 questions
shelf-life
shelf-life

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

301 questions
asked by mira_sundqvist 19k · 9 months ago