Quick answer: Maca at 1.5 to 3 g a day has small trials on desire. Panax ginseng research mostly uses the root; SodaPower uses leaves and stems, which have much less human data.
Maca
Small randomized trials found modest improvements in desire after 6 to 12 weeks, without changes in testosterone.
Ginseng leaf vs root
Root extracts have the most research for fatigue and erectile function. Leaf and stem extracts are cheaper and less studied.
Cautions
Ginseng can lower blood sugar and interact with blood thinners, and may cause insomnia.
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General information, not medical advice. SodaPower is a dietary supplement and is not intended to diagnose, treat, cure or prevent any disease.