l carnitine 1500 mg benefits L-Carnitine Liquid 1500mg: Benefits, Dosage, and How to Use – Biotell NaturaLife Labs Acetyl L-Carnitine (ALCAR)

[PubMed: 26778393] 269

So people at greatest risk for deficiency include those with low stomach acid (e.g., older adults and people on proton pump inhibitors or antacids) or low IF production (known as pernicious anemia), people on medications that interfere with B12 absorption (such as metformin), people who have had gastric surgery, those with GI conditions that impair nutrient absorption (like celiac or Crohn's disease), and people on vegan and vegetarian diets

side effects [1] Mood disturbance, agitation, psychosis

Supplemental L-Carnitine is hard to absorb

Functional food applications featuring L-carnitine have expanded significantly in premium grocery channels