l carnitine how long does it take to work L-Carnitine | Linus Pauling Institute L-Carnitine Side Effects & Safety:

Since both phospholipids and cholesterol are primary components of biological membranes, liposomes exhibit high biocompatibility, safety (characterized by non-toxicity and non-immunogenicity), and complete biodegradability

J Patel, JL Lukkes, A Shekhar

Studies using adult human peripheral T cells demonstrated that glutamate at low concentrations ( 1 mM), however, this effect reversed, indicating that glutamate tends to have immunosuppressive properties at higher concentrations (176, 178)

Fredlund et al

Renal transport of mercapturic acids and their precursors, the S-conjugates of glutathione and cysteine

So before you add the next supplement to your stack, the question worth asking is not just "what can I add?" It's: "Have I protected the foundation?" This is where belongs in the conversation