l carnitine in red meat and heart disease link: Not all about the fat? Red Meat and Heart Disease:
Description
The combination of unverified formulation, uncertain sterility, and unknown systemic effects creates a perioperative exposure that cannot be reliably risk-stratified

I finally found a doc who tried B12 injections

10.1007/BF02662326
METABOLIC EFFECTS OF GROWTH HORMONE Nutritional status dictates GH effects
10.1158/2767-9764.CRC-24-0565 26 CarterJ

Clin Exp Pharmacol Physiol 24:907915 Miners JO, Knights KM, Houston JB et al (2006) In vitro-in vivo correlation for drugs and other compounds eliminated by glucuronidation in humans: pitfalls and promises
