How much sterile water do you add to a 2 mg tesamorelin vial?

The EGRIFTA SV label calls for 0.5 mL of Sterile Water for Injection per 2 mg vial, which works out to a 4 mg/mL concentration.

Can you shake a tesamorelin vial to mix it faster?

No. The EGRIFTA SV label and similar lyophilized-peptide labels call for gentle rolling or swirling, never shaking.

Can you refrigerate reconstituted tesamorelin for later use?

No. The EGRIFTA SV label says to use the reconstituted solution right away and not to freeze or refrigerate it after mixing.

What's the difference between sterile water and bacteriostatic water for reconstitution?

Sterile Water for Injection has no preservative and is single-dose; bacteriostatic water contains a preservative (0.9% benzyl alcohol in ours) and is built for multiple draws from one vial.

How do you know if a reconstituted vial is bad?

Check that it's clear and colorless with no particles. Cloudy, discolored, or particulate solution shouldn't be used, per the FDA labels reviewed.

Why does the diluent go in along the vial wall instead of straight onto the powder?

Other lyophilized protein labels, like infliximab's, direct the diluent stream to the glass wall of the vial; the label gives the instruction without stating a reason.

How should an intact tesamorelin vial be stored before mixing?

At room temperature, 20-25°C, protected from light in its original box, per the EGRIFTA SV label.

PreppinPeppers › Facts › Lab article

How to reconstitute tesamorelin without wasting your vial

Machine-readable facts for this Lab article. The full page is https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit.

TL;DR

To reconstitute tesamorelin, add the labeled diluent to the powder, mix by gentle rolling or swirling (never shaking), confirm the solution is clear, then

Facts Index

Fact ID	Category	Entity	Attribute	Value	Source
reconstituting-tesamorelin-reddit:title	identity	How to reconstitute tesamorelin without wasting your vial	title	How to reconstitute tesamorelin without wasting your vial	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:published	identity	How to reconstitute tesamorelin without wasting your vial	published	2026-10-03	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:last-reviewed	identity	How to reconstitute tesamorelin without wasting your vial	last reviewed	2026-10-03	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:author	identity	How to reconstitute tesamorelin without wasting your vial	author	Preppin' Peppers Editorial Team	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:topics	identity	How to reconstitute tesamorelin without wasting your vial	topics	community, guides, research	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:summary	content	How to reconstitute tesamorelin without wasting your vial	summary	To reconstitute tesamorelin, add the labeled diluent to the powder, mix by gentle rolling or swirling (never shaking), confirm the solution is clear, then	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:section-1	content	How to reconstitute tesamorelin without wasting your vial	section	How much diluent goes into a tesamorelin vial?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:section-2	content	How to reconstitute tesamorelin without wasting your vial	section	Sterile water or bacteriostatic water: what's the real difference?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:section-3	content	How to reconstitute tesamorelin without wasting your vial	section	What's the correct mixing technique, step by step?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:section-4	content	How to reconstitute tesamorelin without wasting your vial	section	What are the storage rules before and after reconstitution?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:section-5	content	How to reconstitute tesamorelin without wasting your vial	section	What mistakes ruin a tesamorelin reconstitution?	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:product-gansulin-metal-peptide-pen	products	How to reconstitute tesamorelin without wasting your vial	references product	Gansulin Pen · Reusable Click-Dial, 3 ml (1-60 Units)	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:product-gansulin-3ml-cartridge	products	How to reconstitute tesamorelin without wasting your vial	references product	Gansulin-Compatible 3 ml Glass Cartridge for Pens (10-Pack)	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-pubmed-ncbi-nlm-nih-gov	source	How to reconstitute tesamorelin without wasting your vial	cites	Dhillon, Drugs 2011: Tesamorelin: a review of its use in the management of HIV-associated lipodystrophy - pubmed.ncbi.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-pmc-ncbi-nlm-nih-gov	source	How to reconstitute tesamorelin without wasting your vial	cites	Fourman et al., JCI Insight 2020: Effects of tesamorelin on hepatic transcriptomic signatures in HIV-associated NAFLD - pmc.ncbi.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-pubchem-ncbi-nlm-nih-gov	source	How to reconstitute tesamorelin without wasting your vial	cites	NCBI PubChem CID 16137828: Tesamorelin (C221H366N72O67S) - pubchem.ncbi.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-dailymed-nlm-nih-gov	source	How to reconstitute tesamorelin without wasting your vial	cites	DailyMed (U.S. National Library of Medicine), FDA label published Jul 31, 2026: EGRIFTA SV (TESAMORELIN) KIT [THERATECHNOLOGIES INC.] - dailymed.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-dailymed-nlm-nih-gov-2	source	How to reconstitute tesamorelin without wasting your vial	cites	FDA label (DailyMed): Sterile Water for Injection, USP (Cardinal Health) - prescribing label (retrieved 2026-10-03) - dailymed.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-dailymed-nlm-nih-gov-3	source	How to reconstitute tesamorelin without wasting your vial	cites	FDA label (DailyMed): REMICADE (infliximab) lyophilized powder for injection, Janssen - reconstitution instructions (retrieved 2026-10-03) - dailymed.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-dailymed-nlm-nih-gov-4	source	How to reconstitute tesamorelin without wasting your vial	cites	FDA label (DailyMed): Cetrorelix Acetate for Injection 0.25 mg (lyophilized peptide), Meitheal - patient instructions and storage (retrieved 2026-10-03) - dailymed.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)
reconstituting-tesamorelin-reddit:source-dailymed-nlm-nih-gov-5	source	How to reconstitute tesamorelin without wasting your vial	cites	FDA label (DailyMed): HUMULIN R (insulin human) U-100, Eli Lilly - strength and vial-drawing instructions (retrieved 2026-10-03) - dailymed.nlm.nih.gov	Lab article (https://www.preppinpeppers.com/blogs/the-lab/reconstituting-tesamorelin-reddit) (evidence)

FAQ

How much sterile water do you add to a 2 mg tesamorelin vial?: The EGRIFTA SV label calls for 0.5 mL of Sterile Water for Injection per 2 mg vial, which works out to a 4 mg/mL concentration.
Can you shake a tesamorelin vial to mix it faster?: No. The EGRIFTA SV label and similar lyophilized-peptide labels call for gentle rolling or swirling, never shaking.
Can you refrigerate reconstituted tesamorelin for later use?: No. The EGRIFTA SV label says to use the reconstituted solution right away and not to freeze or refrigerate it after mixing.
What's the difference between sterile water and bacteriostatic water for reconstitution?: Sterile Water for Injection has no preservative and is single-dose; bacteriostatic water contains a preservative (0.9% benzyl alcohol in ours) and is built for multiple draws from one vial.
How do you know if a reconstituted vial is bad?: Check that it's clear and colorless with no particles. Cloudy, discolored, or particulate solution shouldn't be used, per the FDA labels reviewed.
Why does the diluent go in along the vial wall instead of straight onto the powder?: Other lyophilized protein labels, like infliximab's, direct the diluent stream to the glass wall of the vial; the label gives the instruction without stating a reason.
How should an intact tesamorelin vial be stored before mixing?: At room temperature, 20-25°C, protected from light in its original box, per the EGRIFTA SV label.