u003cemu003eRhodiolau003c/emu003e u003cemu003eroseau003c/emu003e and ashwagandha are both powerful herbs that offer many purported health benefits. If your goals are reduced anxiety and better sleep, ashwagandha may be the better option. On the other hand, if you seek improved mental performance and a boost in energy, Rhodiola powder or Rhodiola capsules may be right for you.