when best to take acetyl l carnitine Acetyl-L-Carnitine, 60 Veggie Caps (500 mg Per capsule) Momentous Acetyl L-Carnitine - 60

polyamine production is stimulated by activation of the 2 -AR in macrophages, which is triggered by catecholamines such as noradrenaline released by sympathetic neurons projecting to the gut (129)

These include limited clinical trial data, variability in phytochemical bioavailability, and inconsistencies in dosing and extract standardization

Severe Glutathione Deficiency, Oxidative Stress and Oxidant Damage in Adults Hospitalized with COVID-19: Implications for GlyNAC (Glycine and N -Acetylcysteine) Supplementation

Many other conditions could be contributing to the symptoms you describe including B12 deficiency