l carnitine 3rd party tested Nutricost Acetyl L-Carnitine Powder Acetyl-L-Carnitine

One study found that spirulina (blue-green algae) supports the growth of beneficial intestinal microbiota like Prevotella, Porphyromonadaceae, Barnesiella and Paraprevotella (14)

Mid-cycle IGF-1 is the single most useful marker to gauge your response

Most patients are diagnosed in the middle to late stages of the illness, when irreversible brain damage has already occurred and interventions to prevent the disease are less likely to be successful (Guest et al., 2020)

A more thorough insight into tissue-level effects was provided by an animal study using an ex vivo rat intestinal ring model

Sandeep PM, Bovee TFH, Sreejith K

The research evidence, while preclinical, is compelling