The present invention provides apparatus and processes for producing a lipid vesicle encapsulating one or more therapeutic agents within the lipid vesicle. By providing a aqueous solution in a first reservoir and an organic lipid solution in a second reservoir. The said aqueous solution and/or said organic lipid solution comprises one or more therapeutic agents. The organic lipid solution is mixed with the aqueous solution by introducing the organic lipid solution and the aqueous solution into a mixing environment at about equal flow rates. The said mixing instantaneously produces a lipid vesicle encapsulating said one or more therapeutic agents within the lipid vesicle.
