Having just "googled" what L-Carnitine is, it's uses, side effects, interactions and warnings - it does state that it is known to help with some symptoms of an over active thyroid HypER (heartbeat, nervousness and weakness)
Fecal tests from metformin-treated donor mice showed that recipient mice had increased Bifidobacterium bifidum and Akkermansia, and decreased CutC/D in their gut microbiota (Su et al., 2021)
On-Label vs Off-Label and Compounded Products Vitamin B12 injections are an established medical treatment for confirmed B12 deficiency and related conditions (for example, pernicious anemia and certain malabsorption states), as summarized by the NIH Office of Dietary Supplements in its Vitamin B12 fact sheet for health professionals
pylori , contributing to the infection pathology (Khamri et al., 2010)
Heres how they support skin and overall wellness: Neutralise harmful free radicals that damage skin cells Reduce melanin production by shifting the pigment from dark eumelanin to light pheomelanin