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injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol sensitivity and site rotation.

14 questions · sorted by votes

52 votes 3 answers35k views
Red, raised and itchy at the injection site for four days. How do I tell a local reaction from an infection?

Four days ago I injected into the left side of my abdomen. Within an hour there was a coin-sized red area, slightly raised, and it itched. It is now day four: the…

injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
injection-technique
injection-technique

Technique questions: angle, pinch versus flat, aspiration, injection speed, air bubbles, and the handling steps that determine whether you deliver…

90 questions
subcutaneous
subcutaneous

Subcutaneous administration as a route: absorption kinetics from abdomen versus thigh versus upper arm, tissue depth, and why site rotation…

14 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…

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asked by linnea_wahlberg 14k · 2.2 years ago
45 votes 3 answers20k views
Reactions at every single site since I switched diluent. Is benzyl alcohol sensitivity a real thing?

I had eleven months of completely uneventful injections. Then I ran out of bacteriostatic water, used plain sterile water for two vials, and had no reactions at all.…

injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 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
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diluent-volume

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asked by elke_brunner 14k · 9 months ago
37 votes3 answers11k views
Does site rotation actually have evidence behind it, and what kind of reaction warrants stopping?

Two related questions I cannot get straight answers to. First, site rotation. Everyone says rotate, nobody says on what evidence or at what spacing. I have seen "2…

injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
injection-technique
injection-technique

Technique questions: angle, pinch versus flat, aspiration, injection speed, air bubbles, and the handling steps that determine whether you deliver…

90 questions
subcutaneous
subcutaneous

Subcutaneous administration as a route: absorption kinetics from abdomen versus thigh versus upper arm, tissue depth, and why site rotation…

14 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

445 questions
asked by klara_novotna 16k · 36 days ago
29 votes 5 answers12k views
What differentiates an injection-site nodule from an infection?

I have kept a symptom diary against dose dates, which turns out to have been the useful thing. The figures are clear enough; the question is what they mean and what…

injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
subcutaneous
subcutaneous

Subcutaneous administration as a route: absorption kinetics from abdomen versus thigh versus upper arm, tissue depth, and why site rotation…

14 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

445 questions
asked by forty_two_c 43k · 17 months ago
27 votes 5 answers16k views
How do I tell headache from an energy deficit on 1,100 kcal a day?

Stated plainly: headache · 1,100 kcal. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not discarded anything yet,…

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injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
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asked by eighty_six_hours 16k · 16 months ago
25 votes 5 answers21k views
How do I tell constipation from an energy deficit on 900 kcal a day?

Conditions: constipation · 900 kcal. I think I have a problem. I am not yet sure whether it is a real problem or a measurement artefact. I want to know whether this…

fatigue
fatigue

Tiredness on treatment: how much is energy deficit, how much is dehydration or electrolyte drift, how much is genuinely drug-attributable, and…

38 questions
nutrition
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Eating on a suppressed appetite: hitting nutritional targets inside a small energy budget, micronutrient risk, meal structure, and what the trial…

92 questions
electrolytes
electrolytes

Sodium, potassium and magnesium during reduced intake and GI losses: what the symptoms of a shortfall look like, when a panel is worth drawing,…

36 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
asked by yuki_morishita 19k · 17 months ago
25 votes 5 answers20k views
What did the placebo arm of STEP 2 report for dizziness?

Setup, so nobody has to ask: STEP 2 · dizziness. I would like help reading this properly rather than being told what conclusion to reach. I have the full report…

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The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

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The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
asked by lipid_panel_q 44k · 23 months ago
25 votes 5 answers13k views
Does constipation at week four of dulaglutide usually resolve without a dose change?

The case in front of me: constipation · four · dulaglutide. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have already…

gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
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Stepwise dose increases over weeks, why the label schedules exist at all, and what tolerability-driven deviation from a schedule looks like in…

444 questions
nausea
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The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
asked by tri_gly_ala 48k · 4 months ago
25 votes0 answers9.5k views
What does STEP 4 tell me about fatigue at the 5 mg dose?

Conditions: STEP 4 · fatigue · 5 mg. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the specifics…

clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

913 questions
gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
titration
titration

Stepwise dose increases over weeks, why the label schedules exist at all, and what tolerability-driven deviation from a schedule looks like in…

444 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
pcos
pcos

Polycystic ovary syndrome: insulin resistance as the shared mechanism, ovulatory and menstrual outcomes reported on treatment, androgen changes,…

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asked by cake_collapsed 13k · 13 months ago
19 votes3 answers14k views
Does benzyl alcohol degrade the peptide, and how would I know if I were reacting to the preservative rather than the compound?

Two connected things I cannot get a straight answer on. First, chemistry. I keep reading that benzyl alcohol "can destabilise proteins" and I have seen it cited as a…

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

832 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

445 questions
asked by net_peptide 16k · 10 months ago
12 votes 5 answers8.5k views
Is reflux on survodutide dose-dependent or dose-rate dependent?

The specifics, since they change the answer: reflux · survodutide. I would like the mechanism, because I want to be able to reason about the cases nobody has written…

nausea
nausea

The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
titration
titration

Stepwise dose increases over weeks, why the label schedules exist at all, and what tolerability-driven deviation from a schedule looks like in…

444 questions
gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
asked by juliette_farnese 12k · 7 months ago
11 votes0 answers14k views
Does hair thinning at week ten of survodutide usually resolve without a dose change?

Stated plainly: hair thinning · ten · survodutide. Everything I have found on this is either a forum aside or a product page, neither of which I trust. I am…

gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
titration
titration

Stepwise dose increases over weeks, why the label schedules exist at all, and what tolerability-driven deviation from a schedule looks like in…

444 questions
nausea
nausea

The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
asked by pieter_maas 22k · 2.3 years ago
9 votes 1 answer2.7k views
Does injection-site erythema at week twelve of liraglutide usually resolve without a dose change?

What I have: injection-site erythema · twelve · liraglutide. I would like to understand the steps well enough to explain them to someone else. I have access to a…

gi-side-effects
gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

416 questions
titration
titration

Stepwise dose increases over weeks, why the label schedules exist at all, and what tolerability-driven deviation from a schedule looks like in…

444 questions
nausea
nausea

The dominant tolerability signal in every trial of the class: incidence, timing relative to a dose step, duration, and the distinction between…

346 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
asked by teodora_ilic 15k · 11 months ago
8 votes 5 answers29k views
Does injection speed affect local reactions?

My setup is a refrigerator with a logger and a small work area I wipe down, nothing more. I want to know whether this is a real physical effect or an artefact of how…

injection-technique
injection-technique

Technique questions: angle, pinch versus flat, aspiration, injection speed, air bubbles, and the handling steps that determine whether you deliver…

90 questions
injection-site-reaction
injection-site-reaction

Local reactions: erythema, induration, pruritus and nodules. Their relationship to injection depth, diluent composition, benzyl alcohol…

14 questions
subcutaneous
subcutaneous

Subcutaneous administration as a route: absorption kinetics from abdomen versus thigh versus upper arm, tissue depth, and why site rotation…

14 questions
asked by gel_pack_warm 13k · 2.2 years ago
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