If you are lacking in the vitamin department, you should consider changing your diet. While many people take this as a sign that they need to run to the store and buy a supplement, most of the nutrients you need can be found in food. Do a little research in order to figure out what changes need to be made.
Never ignore the product warnings on vitamin levels. Vitamin and supplements can have serious side effects when taken with prescription and over the counter medicines. Ginseng can be very dangerous if you have high blood pressure or take heart medications. Lycopene can be deadly if you have a tomato allergy. Always read the warning labels or ask your pharmacist or doctor before taking any vitamins or supplements.
If you are lacking a particular vitamin, it is probably best for you to add that to your diet instead of taking a multivitamin. While there are many different vitamins and minerals in these pills, most of the time the level of particular vitamins is not as high as we need. Buying a single vitamin would be more effective.
When looking for supplements, make sure that you look for those that are in their purest form. For example, Vitamin D3 is the purest form of this supplement and D2 is the synthetic version. This means that the latter may not be as effective and may possibly give you different results than you had hoped for.
It's now time to be healthy. You've learned a lot today, but keep reading and learning more. Learning more will allow you to stay healthier.