Usually injectable E comes in 100mg/5 mL or 200mg/ 5 mL (100 is usually red and 200 is usually purple).

It really depends on what your prescribed dose is, and what your levels are, but it could be. I do .1 mL of 200mg/ 5ml, which is about 4mg of E/week, and my levels are right where they should be. Different people metabolize it differently, so the actual amount administered can vary quite a bit from person to person.