Would like to know if tyrosine would be a good replacement for add medication?

Not likely: Tyrosine is an Amino Acid that can be made into dopamine, but would not be the same as taking pharmaceutical stimulants in adhd. http://www.ncbi.nlm.nih.gov/pubmed/19344299 and http://www.Ncbi.Nlm.Nih.Gov/pubmed/21766545.

NO: There is no evidence that tyrosine have the same potency in dealing with add as known potent medications.

Don’t waste your $: Your body makes all the tyrosine it needs from phenylalanine. Any tyrosine that doesn't go into proteins or catecholamine synthesis is burned for energy. The money you spend to buy tyrosine supplements you can literally watch going down the toilet. Remember: You don't need even a high-school diploma to work in a health-food store.