The root is called maca. It grows high in the Andes Mountains of Peru, at altitudes above 14,000 feet where almost nothing else survives. Incan warriors reportedly consumed it before battle for strength and stamina. It was so valued that it was used as currency and reserved for royalty.
But the use that has attracted the most attention from modern researchers is what Peruvian women have known for centuries: maca supports sexual vitality.
"When I started reviewing the clinical literature on maca, I was surprised by how much real research exists," says Dr. Chen. "This isn't some trendy herb that appeared on Instagram last year. It's been studied in peer-reviewed journals for its effects on sexual function, energy, mood, and hormonal support — including specifically in menopausal women. And the results are genuinely encouraging."
In fact, a study published in the journal Menopause found that post-menopausal women taking maca daily showed meaningful improvement in sexual function and libido after just six weeks. Other clinical trials have shown that maca directly supports sex drive in women — not by forcing arousal, but by supporting the hormonal and neurochemical systems that make you want sex in the first place.
"That's what caught my attention," says Dr. Chen. "Most things I'd seen either tried to force a physical response or just gave women energy and hoped the sex drive would follow. Maca actually targets libido itself — and it does it gently, without stimulants, and the research backs it up."
That's why some health practitioners have started calling the formulation Dr. Chen found a "natural Viagra for women." Not because it works the same way — but because women finally have something that actually works.
The formulation is called Rubi Feminine Capsules. What makes Rubi's proprietary blend unique is that it uses three distinct strains of organic maca, each a different color, each studied for different effects on the body.
"Different colors of maca have meaningfully different effects," Dr. Chen explains. "Red maca, black maca, and yellow maca each target different systems. When you combine them in the right ratios, you get a formulation that addresses all three layers — the menopause hormonal decline, the GLP-1 brain chemistry suppression, and the caloric deficit survival mode — simultaneously."
Rubi has absolutely nothing to do with weight loss. It doesn't affect appetite. It doesn't affect how your body processes food. It doesn't contain stimulants. It's a targeted libido support supplement — focused entirely on one thing: supporting the energy, mood, and hormonal foundations that your sex drive runs on.
"Your medication handles weight. Menopause is a natural transition. Rubi handles the libido foundation underneath both," Dr. Chen explains. "Your GLP-1 does its job, your body does what it needs to do through menopause, and Rubi supports what neither of them is covering — your sex drive."
And because Rubi contains no stimulants and no caffeine, it won't cause the jitters, anxiety, or sleep disruption that so many women are already dealing with from the medication and menopause combined. It's gentle. It builds steadily. And it lets your body do the work on its own timeline.
Right now, Rubi is the only libido support supplement on the market specifically formulated to address what happens when menopause and a GLP-1 medication are suppressing your sex drive at the same time. Other libido products weren't built for this. Rubi was.