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While they won't harm you, the beneficial bacteria count drops significantly after expiration, making them virtually useless

doi: 10.1161/HYPERTENSIONAHA.118.12588 54 HutchinsonA

Reduced O-glycosylated clathrin assembly protein AP180: implication for synaptic vesicle recycling dysfunction in Alzheimer's disease Neurosci Lett 1998

For an excellent review on the full role of L-Carnitine in exercise see bit.ly/PPLC2016 The early days Once identified by researchers, doctors or technologists, many natural compounds soon attract the attention of athletes and coaches, keen to see if they can help performances and medal tallies

Carnitine deficiency results in a reduced oxidation (breakdown) of fatty acids and therefore, reduced energy (ATP) production