α lipoic acid acetyl l carnitine KAL Acetyl-L-Carnitine and Alpha Tablets, 60 ct Acetyl L-Carnitine Free Form 400
Description
This is important since it asks questions about the method to measure the QT interval in mice that is known to be difficult (just give a look on the examples of ECG in the paper)

Children 2 to 6 years of age need larger doses (per kg) to achieve the same serum concentration, suggesting a more rapid clearance
Uversky VN, Li J, Fink AL

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