Can you od on l. tyrosine?

Yes but rare: L- tyrosine is an amino acid(building blocks of protein), that is not considered essential because the body can make it from other Amino Acids like phenylalanine. It is part of the production chain of many neurotransmiter (substances that transmit the message from nerve cell) and also important in the production of melanin which gives us our. Od rarely reported but should not be taken in large am.