found this:
It should also be noted that both versions of Winstrol have been linked to strong adverse changes in HDL/LDL cholesterol levels. This side effect is common with anabolic steroid therapy, and obviously can become a health concern as the dose/duration of intake increase above normal. The oral version should have a greater impact on cholesterol values than the injectable due to the method of administration, and may therefore be the worse choice of the two for those concerned and this side effect.
i wonder if this is true also with the injectible version of most other orals (i.e. var, etc).