I have been using this product for just under a week. Sprinkling it on my cereal in the mornings and occasionally stirring it into soups, drinks, even ice cream sometimes. The taste takes a little getting used to. Its somewhat nutty and a bit bitter. But everyone has their own taste and if you are fond of radishes or turnips which I am, and which the Maca root is related to then you won't mind this. The texture is similar to cocoa, and again there is a hint of a cocoa-like taste too.
With regards to the affects. I feel great!. More overall energy, with the ability to concentrate with more ease and focus than in recent years. I am generally more alert and active than usual and as a personality I am not prone to suggestibility, as I am generally fairly cautious about products such as these and unafraid to write fads off as rubbish. This is definitely not a waste of time or money, despite being fairly expensive. However if you are someone who relies on coffee or other caffeine based drinks you may find you need them less and can make a saving on these less than healthy foods.
Finally research the product as there are some contraindications. I found the link below particularly useful.
One word of warning. Stick to the recommended dose on the packet which on the Naturya product suggests 10-15 grams per day. I was perhaps too enthusiastic the first couple of days overdoing the sprinkling, and dashed around like a herbalised version of Arnold Schwarzenegger. It also made me aggressive on a couple of occasions, so depending on your constitution be sensible.