20 categories

Practice

The practical mechanics: arithmetic, preparation, handling, administration, and managing what goes wrong.

194 topics10,175 posts48 solved Moderators: bench_notes, KLindqvist About this category

Dosing & titration 35 Reconstitution 33 Administration 33 Storage & stability 30 Side effects 33 Interactions 30

194 topics · page 2 of 7

Topic	Participants	Replies	Views	Activity
Coming back to: Delayed gastric emptying and oral medication absorption: which drugs matter Practice › Interactions hypoglycaemia metformin insulin needs a source Solved Delayed gastric emptying and oral medication absorption: which drugs matter Writing it up because I had to work it out twice and would rather nobody else did. Reading back through what has been written here…	+63	74	11k	1d
Sulphur-smelling eructation: mechanism and what helps Practice › Side effects vomiting delayed gastric emptying nausea Sulphur-smelling eructation: mechanism and what helps — setting out what I have, and where I think it stops being reliable. I would like to disagree carefully with the settled view on sulphur-smelling…		2	58	1d
Muscle cramps: the ordinary causes before the exotic ones — a second dataset Practice › Side effects constipation delayed gastric emptying fatigue hair shedding Solved Posting this under the heading it deserves: Muscle cramps: the ordinary causes before the exotic ones — a second dataset Everything below is what sits behind that. Something about Muscle cramps does not…	+65	77	39k	1d
Pinch or no pinch, and how needle length changes the answer — what changed since Practice › Administration missed dose aseptic technique injection site rotation Solved Posting this under the heading it deserves: Pinch or no pinch, and how needle length changes the answer — what changed since Everything below is what sits behind that. What changes if the standard account of…	+58	62	16k	1d
What published stability data actually covers, and what it does not Practice › Storage & stability cloudy or discoloured solution freeze-thaw beyond-use date Solved Asking directly, because I could not find a straight answer: What published stability data actually covers, and what it does not A question about published stability data actually covers that I think has a…	+8	12	435	1d
Does a peptide degrade silently, with no visual change? Practice › Storage & stability beyond-use date cold chain temperature excursion freeze-thaw Solved Does a peptide degrade silently, with no visual change? I have a specific reason for asking rather than idle curiosity, and the context is below. What changes if the standard account of peptide is wrong? I…	+73	79	1.3k	1d
Drawing up with one needle and injecting with another Practice › Administration injection site rotation missed dose aseptic technique subcutaneous injection On the subject in the title: Drawing up with one needle and injecting with another Working notes rather than a conclusion. A question about technique rather than about dose. I have been doing the same thing…	+1	5	6.9k	1d
Sulfonylureas: the interaction most worth taking seriously — what changed since Practice › Interactions metformin delayed gastric emptying hypoglycaemia insulin On the subject in the title: Sulfonylureas: the interaction most worth taking seriously — what changed since Working notes rather than a conclusion. What changes if the standard account of Sulfonylureas is…	+3	7	35k	1d
A 5 mg vial and a 0.25 mg dose: the arithmetic in full Practice › Reconstitution syringe units worked example reconstitution bacteriostatic water Solved A 5 mg vial and a 0.25 mg dose: the arithmetic in full Writing it up because I had to work it out twice and would rather nobody else did. 5 mg vial: setting out the arithmetic in full, because I have had to…	+124	141	16k	2d
Coming back to: Light exposure: how much protection is proportionate? Practice › Storage & stability temperature excursion cold chain freeze-thaw cloudy or discoloured solution Asking directly, because I could not find a straight answer: Light exposure: how much protection is proportionate? Reading back through what has been written here about Light exposure, three questions come up…	+5	10	13k	2d
Follow-up: Reading an interaction checker output critically Practice › Interactions insulin hypoglycaemia delayed gastric emptying needs a source Solved Reading an interaction checker output critically — setting out what I have, and where I think it stops being reliable. A follow-up question about Reading an interaction checker output that I did not know to…	+62	66	13k	2d
Micro-titration: a disputed topic, argued properly Practice › Dosing & titration titration dose reduction worked example tirzepatide Solved Wiki Micro-titration: a disputed topic, argued properly Writing it up because I had to work it out twice and would rather nobody else did. Two things I would like separated before anyone answers on…	+99	110	61k	2d
Alcohol: what is documented and what is folklore Practice › Interactions metformin insulin delayed gastric emptying Posting this under the heading it deserves: Alcohol: what is documented and what is folklore Everything below is what sits behind that. Alcohol, and specifically the version of it that the documentation does…	+120	134	11k	2d
Stepping down deliberately, and how to do it without losing progress — what changed since Practice › Dosing & titration tirzepatide semaglutide titration missed dose Under review Posting this under the heading it deserves: Stepping down deliberately, and how to do it without losing progress — what changed since Everything below is what sits behind that. Something changed and I would…	+94	99	29k	2d
Why I now write the concentration on the vial in marker Practice › Reconstitution syringe units bacteriostatic water concentration maths Asking directly, because I could not find a straight answer: Why I now write the concentration on the vial in marker Writing this out with the numbers in it, because "roughly" is how these go wrong. Vial: 15…	+1	5	30k	11d
[2026 update] Does a peptide degrade silently, with no visual change? Practice › Storage & stability temperature excursion storage freeze-thaw cold chain Does a peptide degrade silently, with no visual change? — that is the question, and I have not found it answered plainly anywhere I have looked. I have read the maintained page on this and I still have a gap,…	+82	86	24k	15d
Second pass at: Metformin co-administration and additive GI effects Practice › Interactions hypoglycaemia delayed gastric emptying metformin needs a source On the subject in the title: Second pass at: Metformin co-administration and additive GI effects Working notes rather than a conclusion. Posting a small dataset on Metformin co-administration. It is mine, it…	+131	142	56k	19d
Constipation management, with a dietitian's contribution Practice › Side effects constipation nausea delayed gastric emptying vomiting Solved Posting this under the heading it deserves: Constipation management, with a dietitian's contribution Everything below is what sits behind that. Constipation management: setting out the arithmetic in full,…	+79	88	27k	21d
Second pass at: Leak-back after withdrawal and whether you lost a meaningful dose Practice › Administration subcutaneous injection needle gauge & length missed dose Second pass at: Leak-back after withdrawal and whether you lost a meaningful dose — setting out what I have, and where I think it stops being reliable. I have read the maintained page on this and I still have…	+18	22	2k	25d
Coming back to: Swirling versus inverting versus leaving it alone Practice › Reconstitution reconstitution concentration maths syringe units Solved Swirling versus inverting versus leaving it alone Writing it up because I had to work it out twice and would rather nobody else did. Swirling versus inverting versus leaving — I have the observation and I do…	+20	24	16k	26d
Cold solution and stinging: the simplest fix Practice › Administration injection site rotation subcutaneous injection missed dose Posting this under the heading it deserves: Cold solution and stinging: the simplest fix Everything below is what sits behind that. An honest uncertainty about cold solution and stinging rather than a…	+35	39	8.2k	30d
Pinch or no pinch, and how needle length changes the answer — the long version Practice › Administration injection site rotation injection site reaction missed dose aseptic technique On the subject in the title: Pinch or no pinch, and how needle length changes the answer — the long version Working notes rather than a conclusion. A narrow question about Pinch, deliberately narrow, because…	+75	79	1.5k	1mo
[2026 update] A vial that will not fully dissolve: what to check and in what order Practice › Reconstitution concentration maths dead volume bacteriostatic water syringe units Solved Posting this under the heading it deserves: A vial that will not fully dissolve: what to check and in what order Everything below is what sits behind that. Practical question with the units stated, because I…	+114	128	20k	1mo
Second pass at: Temperature logging at home: what is worth the effort Practice › Storage & stability temperature excursion cloudy or discoloured solution freeze-thaw cold chain Posting this under the heading it deserves: Second pass at: Temperature logging at home: what is worth the effort Everything below is what sits behind that. Posting a small dataset on Temperature logging. It…	+4	8	29k	1mo
Dizziness on standing and the electrolyte explanation — does this still hold? Practice › Side effects vomiting hair shedding nausea constipation Solved The question in the title: Dizziness on standing and the electrolyte explanation — does this still hold? I will give what I have already checked below so nobody repeats it. Trying to work out what would count…	+89	94	18k	1mo
Injecting into an area that has become firm: why not to Practice › Administration subcutaneous injection injection site rotation injection site reaction aseptic technique Solved Injecting into an area that has become firm: why not to Writing it up because I had to work it out twice and would rather nobody else did. Asking about the failure mode rather than the procedure, because the…	+82	92	26k	1mo
Transporting a vial for a weekend away — a second dataset Practice › Storage & stability storage cold chain beyond-use date Transporting a vial for a weekend away — a second dataset Writing it up because I had to work it out twice and would rather nobody else did. Posting a small dataset on Transporting a vial. It is mine, it is…	+74	84	5.1k	1mo
[2026 update] Storing lyophilised material long term: what governs the shelf life Practice › Storage & stability beyond-use date freeze-thaw cold chain cloudy or discoloured solution Storing lyophilised material long term: what governs the shelf life — setting out what I have, and where I think it stops being reliable. Two things I would like separated before anyone answers on Storing…	+122	133	35k	1mo
Choosing a concentration on purpose rather than by accident Practice › Reconstitution concentration maths worked example syringe units Solved On the subject in the title: Choosing a concentration on purpose rather than by accident Working notes rather than a conclusion. Working notes on choosing a concentration rather than a conclusion. I would…		2	719	1mo
When a dose reduction is the correct response to a side effect — a second dataset Practice › Dosing & titration worked example dose reduction titration tirzepatide When a dose reduction is the correct response to a side effect — a second dataset I have a specific reason for asking rather than idle curiosity, and the context is below. Posting a small dataset on dose…	+10	14	42k	2mo