What are the risks or negative side-effects of this combination of herbs?
Safed Musli 0.1
Rutaecarpine 0.04
Cissus Quadrangularis 0.1
Gynostemma Pentaphyllum 0.05

I don't have an answer to your question however I've been using
Tongkat Ali for several months now with no ill effects and very
satisfactory positive results.

You have to realize that when you use these "herbal" medications, you
are completely on your own.  That is, YOU have to prove to yourself
that the medications are effective above the placebo effect and the
benefits outweigh the side effects.  These herbal medications are not
required to provide FDA any safety or therapeutic data and therefore,
can claim just about anything.  In general, if you see a medication
that claim cure-for-all effect, you are probably dealing with a bogus
drug.  Be very careful, as I have seen people lose their kidney
functions or liver functions after taking them.