Navitas Naturals' organic gelatinized maca powder comes in the most economical 16oz zip-lock packaging. It ran out of stock one time and I came to buy NOW Maca. To my surprise, this is even more aromatic and great tasting. Maca is also known as Peruvian ginseng. The gelatinized form has its starch removed so as to boost its absorption. It boosts man's stamina in all forms of physical activities and is believed to increase libido and sperm health as well. To boost fertility, women can take this once daily, and stop during menstrual period or when pregnant. For menopausal women, Maca supports healthy estrogen level and is effective in alleviating symptoms like hot flashes, anxiety and moodiness. As in all herbs that regulate hormone, allow the body time to adjust and take only when needed. Maca is not suitable for women with already estrogen-dominant traits like painful breast-engorgement before menstrual period, severe acne breakout, heavy menstrual bleeding, and history of hormone-sensitive breast cancer.