I am not an expert but I have personally used a few different testosterone boosters.
I prefer a natural Tribulus extract. Trebles not only boosts testosterone in women and men, but also aids in overall hormonal balancing.
Personally, I struggle with a hormone/progesterone imbalance and some other issues.
I use a progesterone supplement (topical) as well as taking a Tribulus supplement.
With a natural Tribulus extract, I don't think you should see any side effects at all, however every body is different.
It will also help with mood, energy, and sex drive. I have never experience any negative side effects.
I have used some other supplements from some other companies that add a variety of ingredients and cost a lot!
I don't recommend spending the money for the label, personally.
Hope this helps lady!