Meanwhile back on subject:
Taking vitamins or supplements to adjust some medical conditions aside the real problem with vitamins as a replacement is that you then miss on on all the extra minerals and bits your body gets from real food. Veges contain far more than just the vitamin you are specifically taking in a tablet form. Roughage (fibre), proteins (Legumes and beans) and dozens or more of trace elements that are not included in that little gelatinous capsule that the chemist or health shop said would do the job.
Nothing wrong with frozen veges at all, we often do an asian stir fry with chicken\beef\pork with 500gms of mixed veges from the freezer. there's your 5 veges per day in one go. Our big resource is our spice and liquid additives and lemons. Sesame oil, Soy sauce, cumin, evry thing under the sun plus a herb garden for fresh Oregano, thyme, mint, rosemary, bay leaves, parsley ( excellent for stomach ). If the original recipe looks a bit bland then then these will jazz it up real fast. Lemon or lime is a great taste replacement for salt which we still use but in moderation.
Since we moved onto a more healthier style of eating I have discovered far more flavours and styles than was ever possible with the old 'fat\salt\sugar' combination most western diets espouse. Haven't been to a Macca's or any equivalent since 2005 and no way do I miss them.
We also grow tarragon, fennel, asparagus, strawberries, garlic ( awesome fresh!! ), onions, chives. Only thing we don't grow is veges, cheaper than growing in the supermarket so why bother. Although I do grow beans and we have a massive grape vine.
Sorry, I get a bit passionate about our eating habits, I enjoy cooking and experimenting and I've felt the results. I'll stop preaching now.