While true, nandrolone is typically a better hormone for women than testosterone. Nandrolone is testosterone with an extra hydrogen atom attached, this helps prevent viralization (masculine side effects) at proper HRT level (1-7mg a wk typically).
To add info, nandrolone is the hormone women create while pregnant to help deal with the extra systemic stresses of carrying a fetus while not transferring negative side effects to the baby.
These side effects are almost always from abuse, meaning high dosages or taking it for too prolonged of a period. You can also wreck your pancreas and make your TSH/LSH levels so low that they don't show up on blood exams if you have a massive bolus dose. If you're being responsible and taking it appropriately you should be fine.