Open data

GLP-1 doses people discuss vs the strengths that exist

A pen clicks to a handful of fixed strengths. A vial does not. Here is how the doses people talk about online line up with the strengths the FDA label lists, and with the vial sizes on sale.

Data as of Oct 24, 2026. Part of the Peptide Evidence Index. License CC BY 4.0.

7 vs 6

Tirzepatide is sold in 7 vial sizes in guides and shops, from 10 mg to 60 mg, against 6 injectable strengths on the FDA label.

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4 vs 7

Semaglutide is sold in 4 vial sizes in guides and shops, from 5 mg to 30 mg, against 7 injectable strengths on the FDA label.

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3 vs 5

Liraglutide is sold in 3 vial sizes in guides and shops, from 5 mg to 30 mg, against 5 injectable strengths on the FDA label.

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The doses people name

The 15 most-mentioned single doses in weight-loss posts, smallest first. Violet bars are strengths the FDA label lists.

Retatrutide

1,186 single-dose mentions, 900 posts analyzed. No FDA label yet; trials ran 0.5 mg to 12 mg.

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Retatrutide
Dose	Mentions
0.5 mg	108
1 mg	222
1.5 mg	57
2 mg	283
2.5 mg	41
3 mg	91
3.5 mg	13
4 mg	145
5 mg	57
6 mg	66
7 mg	9
8 mg	43
9 mg	12
10 mg	22
12 mg	17

Tirzepatide

673 single-dose mentions, 900 posts analyzed, Oct 24, 2025 to Oct 24, 2026.

On the FDA label
Not a labelled strength

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Tirzepatide
Dose	Mentions	On the FDA label
1 mg	11	No
1.5 mg	9	No
2 mg	23	No
2.5 mg	111	Yes
3 mg	32	No
3.5 mg	16	No
4 mg	19	No
4.5 mg	10	No
5 mg	127	Yes
6 mg	32	No
7 mg	13	No
7.5 mg	64	Yes
10 mg	80	Yes
12.5 mg	32	Yes
15 mg	94	Yes

Semaglutide

520 single-dose mentions, 900 posts analyzed, Oct 24, 2025 to Oct 24, 2026.

On the FDA label
Not a labelled strength

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Semaglutide
Dose	Mentions	On the FDA label
0.2 mg	13	No
0.25 mg	93	Yes
0.5 mg	80	Yes
1 mg	127	Yes
1.25 mg	9	No
1.5 mg	38	No
1.7 mg	26	Yes
2 mg	26	Yes
2.4 mg	33	Yes
2.5 mg	13	No
3 mg	25	No
4 mg	12	No
7 mg	13	No
14 mg	12	No

Liraglutide

84 single-dose mentions, 816 posts analyzed, Oct 24, 2025 to Oct 24, 2026.

On the FDA label
Not a labelled strength

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Liraglutide
Dose	Mentions	On the FDA label
0.3 mg	2	No
0.6 mg	24	Yes
1.2 mg	19	Yes
1.8 mg	14	Yes
2.4 mg	4	Yes
3 mg	21	Yes

Mazdutide

6 single-dose mentions, 115 posts analyzed. No FDA label yet; trials ran 1.5 mg to 16 mg.

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Mazdutide
Dose	Mentions
5 mg	4
6 mg	2

Strengths that exist, per compound

GLP-1 compounds: FDA label strengths, vial sizes and community dose mentions
Compound	FDA status	Injectable strengths on the label	Vial sizes listed	Mentions not on the label
Retatrutide	In clinical trials	None yet. Trials: 0.5 mg to 12 mg	5 mg, 10 mg, 12 mg, 15 mg, 20 mg, 24 mg, 30 mg, 40 mg, 50 mg, 60 mg	n/a
TirzepatideMounjaro and Zepbound	FDA approved as Mounjaro +1	2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, 15 mg	10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg	165 of 673 (24.5%)
SemaglutideOzempic, Wegovy and Rybelsus	FDA approved as Ozempic +2	0.25 mg, 0.5 mg, 1 mg, 1.7 mg, 2 mg, 2.4 mg, 7.2 mg	5 mg, 10 mg, 20 mg, 30 mg	135 of 520 (26%)
LiraglutideVictoza and Saxenda	FDA approved as Victoza +1	0.6 mg, 1.2 mg, 1.8 mg, 2.4 mg, 3 mg	5 mg, 10 mg, 30 mg	2 of 84 (2.4%)
Mazdutide	In clinical trials	None yet. Trials: 1.5 mg to 16 mg	5 mg, 10 mg, 15 mg, 20 mg	n/a
Survodutide	In clinical trials	None yet. Trials: 0.3 mg to 6 mg	5 mg, 6 mg, 10 mg, 20 mg	n/a

Split dosing explains part of the gap, but only a vial allows it. Working out what a vial dose means in units is what the reconstitution calculator is for.

How it is counted

Label strengths are every step and end point of the FDA-labelled injectable schedules in our records (tablets are left out). Compounds still in trials have none.

Community mentions come from public Reddit posts over the past year, read and tallied by our mining job. A mention is one post naming one dose, not one person. We count weight-loss posts, single doses in mg or mcg, and leave out amounts the job flagged as outliers. Up to 900 posts per compound are analyzed, so these are shares, not totals.

Vial sizes are the sizes guides and sellers list, as cited on each compound page.

Every number on this page is computed in code from the same records that build our peptide pages; no model writes one. Full rules on the methodology page, and the whole dataset is free to download.

Licensed CC BY 4.0. Reuse any number, including in commercial work. Credit “TruePeptideSource” and link to this page.

Cite this dataset

TruePeptideSource. (2026). GLP-1 doses people discuss vs the strengths that exist (Peptide Evidence Index, version 2026-10-24) [Data set]. https://truepeptidesource.com/data/glp-1-strengths