l carnitine 1500 or 3000 Nutrex Research - Clinically Dosed L-Carnitine Liquid for Energy, Metabolism & Muscle Recovery - Delicious Orange Mango Flavour - No Sugar, No Carbs, No Stimulants L-Carnitine 3000 - Green Apple

High dose oral cobalamin would be a reasonable alternative as maintenance in patients unable to tolerate intramuscular injections provided there is good compliance with treatment

Protection against lethal ammonia intoxication: synergism between endogenous ornithine [PMID: 8058031] Laboratory literature summary: Protection against lethal ammonia intoxication: synergism between endogenous ornithine and L-carnitine

You can also ask the pharmacy if you can send the peptide to a lab to verify the contents

The role of plasma melatonin and vitamins C and B12 in the development of idiopathic tinnitus in the elderly

There are no rigorous scientific studies on the peptides in question. But its not just that we cant confirm the true benefits of the peptideswe also dont know what the risks are