500 mg vial
L-Carnitine: a 500 mg vial
What a 500 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
500 mg + 1 mL bacteriostatic water = 500 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 500 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.
| Goal | Dose | Units | Doses in this vial | Source |
|---|---|---|---|---|
| Oral supplementation, as studiedDaily, in divided doses · Oral | 1000 mg – 3000 mg | More than one vial per dose | — | Published review |
| Injectable, as used in clinicsTwo to three times weekly · Intramuscular | 500 mg – 1000 mg | from 100 unitstop of the range needs a second vial | 1 | Community practice |
CheckSome doses above need more compound than a 500 mg vial holds, so one dose spans more than one vial. A larger vial is usually the cheaper and more accurate answer than combining two.
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 500 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.
| Water added | Concentration | 1000 mg draws to |
|---|---|---|
| 1 mLshown above | 500 mg/mL | Exceeds a 1 mL barrel |
| 2 mL | 250 mg/mL | Exceeds a 1 mL barrel |
| 3 mL | 166.667 mg/mL | Exceeds a 1 mL barrel |
| 5 mL | 100 mg/mL | Exceeds 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.