l carnitine injection safety Injectable L-Carnitine L-Carnitine: Boost Energy & Performance
Description
Effect of acetyl-L-carnitine on hyperactivity and spatial memory deficits of rats exposed to neonatal anoxia Neurosci Lett 1997

The studies either do not report negative effects or they are not severe and not enough to stop the therapy nor induce nausea, headache, or vertigo [102]

Secondly, this study was modeled on daily L-C supplements for three months only

Effects of L-carnitine supplementation on fat oxidation at rest and during exercise in healthy volunteers Wall BT, Stephens FB, Constantin-Teodosiu D, Marimuthu K, Macdonald IA, Greenhaff PL (2011)
