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L-Carnitine

1000 mg vial

L-Carnitine: a 1000 mg vial

What a 1000 mg vial of L-Carnitine becomes once it is mixed, and what each dose reported in the sources draws to on a syringe. Every figure is arithmetic on the vial size in the heading — none of it is a recommendation, and the doses are the ones our sources describe rather than ones we picked.

Leading with

1000 mg + 1 mL bacteriostatic water = 1000 mg/mL

Chosen because it puts the reported doses on readable marks of a 1 mL U-100 syringe. Other volumes are perfectly valid — the dilution table further down covers them, and the concentration changes what every dose draws to.

What each reported dose draws to

At 1000 mg/mL, on a 1 mL U-100 syringe. Every row names the source it came from, and a trial protocol and a community convention are not the same kind of information.

Reported doses for L-Carnitine, converted to syringe units for a 1000 mg vial.
GoalDoseUnitsDoses in this vialSource
Oral supplementation, as studiedDaily, in divided doses · Oral1000 mg – 3000 mgfrom 100 unitstop of the range needs a second vial1Published review
Injectable, as used in clinicsTwo to three times weekly · Intramuscular500 mg – 1000 mg50 units – 100 units2Community practice

Check every figure against the vial in front of you before drawing. Vials are filled with an overage and labels are not a guarantee. Change any of these numbers in the calculator.

If you add a different amount of water

The same 1000 mg of compound, at four common volumes. More water means a larger, easier-to-measure draw of a weaker solution; less water means the opposite. The amount of compound you inject is identical in every row — only the volume carrying it changes.

Concentration and draw volume for a 1000 mg vial at four water volumes.
Water addedConcentration1000 mg draws to
1 mLshown above1000 mg/mL100 units units · 1 mL
2 mL500 mg/mLExceeds a 1 mL barrel
3 mL333.333 mg/mLExceeds a 1 mL barrel
5 mL200 mg/mLExceeds a 1 mL barrel

Storage

Before mixing

Room temperature for oral forms. Injectable solutions per the label.

After mixing

Injectable carnitine is supplied as a solution, not a powder.

Other vial sizes

The same compound, different arithmetic.

Arithmetic on the vial size named above and the doses our sources report. Nothing here is a recommendation, a protocol or medical advice, and no clinician has reviewed it. Some rows describe community practice, which is not evidence that a dose is safe or effective. Speak to a licensed healthcare provider before acting on any of it.

Sources for the doses above are listed in full on the L-Carnitine profile, each with the trial or label it came from.