Low blood levels of carnitine may occur in people whose bodies cannot properly use carnitine from their diets, people on dialysis due to serious kidney disease, and people being treated with certain drugs (e.g., valproic acid, zidovudine)
Serious adverse events are rare but include pituitary axis suppression with long-term high-dose use and worsening insulin resistance in patients with pre-existing glucose issues
Populations with moderate, stable intake typically perform better on memory and attention tasks than those at either extreme (214, 215)
The EMPA-KIDNEY Collaborative Group, Herrington WG, Staplin N, Wanner C, Green JB, Hauske SJ, et al
best for moderate-intensity steady-state cardio Evening Fasted Protocol (Alternative): Timing: At least 4-6 hours after last meal, before bed Advantages: Leverages overnight fasted period for lipolysis Considerations: Less commonly used