propionyl-l-carnitine and acetyl-l-carnitine Swanson Propionyl L-Carnitine with Glycine, Amino Acid, 60 Vegan Capsules, 2 Pack Acetyl L-Carnitine

For short periods, like during shipping or on the lab bench, it is stable at room temperature for several weeks

Groten CJ, MacVicar BA (2022) Mitochondrial Ca2+ uptake by the MCU facilitates pyramidal neuron excitability and metabolism during action potential firing

Jr Ultrastructural pathology of Crohn's disease: correlated transmission electron microscopy, scanning electron microscopy, and freeze fracture studies

Telomere attrition accelerates after age 30, with mean leukocyte telomere length declining by approximately 24.7 base pairs per year according to a meta-analysis of 124 cross-sectional studies published in Aging Cell (N=130,093) 2