carnitine l Core Nutritionals By facilitating the efficient use of stored fat for energy Life Extension - L-Carnitine 500

found that histidine catabolism affects the sensitivity of cells to methotrexate, and dietary supplementation of histidine maintains a suitable chemotherapy effect with a low dose of medication

Injection technique for those using injectable peptides

Oral KPV places the peptide directly at the intestinal epithelium where inflammation occurs

Rankings are based on documented quality criteria only

The exceptions come down to what irritates the injection site

Summary: Berberine and L-carnitine can be taken together as no direct interactions are documented, but evidence for their combined use is limited and neither is recommended in UK clinical guidelines