3 years old l-tyrosine, can I still use it?

[Mo T 4 Me]

I have an old l-tyrosine caps bottle (opened) almost full. Can I still use it?

 

[Alcatraz20]

It should have an expiration on it, but most tend to expire 2 years after manufactured, so yours is pretty expired and you opened it so that will make it downgrade faster, it has probally lost a lot of its potency, but shouldn't harm you taking it, just go buy a fresh bottle l-tyrosine is inexpensive...