I am anemic and have to take iron regularly to keep my levels up in order to function in the first two weeks that I took this product I felt my energy levels going down rather than up. I ordered a different iron supplement, liquid, that I knew would work. I like the fact that this is odorless, tasteless, does it need to be refrigerated, but it has to work. So far I’m not seeing this moving in the right direction with this product.No flavor, easy to digest, helps so much with my energy level near and during my cycle.This is absolutely the best iron supplement I found. Not only it is odorless, colorless and tasteless (like water) and it's easy to take. It causes absolutely no GI side effects. I tired 10 different heme and non hemem iron supplements prior to this one and all cause terrible GI side effects! I had labs verify it's efficacy. However for some that have absorption issues i.e. from low stomach acid, SIBO, leaky gut, h pylori, celiac etc. this supplement alone won't cure anemia. FIrst the root cause will need to be addressed (in my case low stomach acid cause malabsorption and I was not absorbing even this iron on 300 mg/day dose). If your ferritin, cbc, iron panle labs aren't improving on this product start looking for root cause of your iron defficiency and address that ASAP. Don't give up!Update: I had my bloodwork done after using this for 3 months and there was zero change for me. Dr recommended taking the higher dose (2tsp daily) and recheck in 3 months. I will update again then!I was on the search for a natural iron pill supplement that didn't contain dyes when I came across liquid iron. I was concerned how a liquid iron supplement would taste, but this is surprisingly tasteless! I get labs for my anemia again in July - I will update once I have results and can comment on how well it absorbs and raises hemoglobin.It took about a month for this tonic to help me cope with my iron deficiency. But mu depression, lack of energy , lethargy are significantly reduced. I am happy with the purchase. As someone who is constantly needs to check my iron absorption, I will probably keep buying this again and again.Already on my third bottle.Price could have been a little lesser though.This didn’t work for my husband. He is anemic and his numbers actually dropped while taking it! And no he was checked for bleeding and has none! Trying the Wow Iron next.A few doctors and pharmacists told my wife she cannot know what amount of calcium she is getting from this. The parts per million tells you nothing. Do not waste your money.So this is an interesting product. Unfortunately with the timing of the different iron supplements I was taking I can't say conclusively if this was the one that helped my iron levels.I have never heard of nano iron and have take iron bisglycinate chelate in the past. That iron, as do all (non nano, I guess) irons have a very gross metallic taste to them. Fun fact, the metallic taste/smell isn't from metal but from your body having a chemical reaction when the iron hits the oil on your skin or other cells in your body. This just tastes like water, so I was surprised, but it does make sense especially upon reading further about nano iron.Iron can be pretty rough on your body, especially in supplement form, even as a chelate. There have been studies to show that nano iron increases absorbtion and stops this damage that iron supplements do to your body. There is a lot of fear surrounding "nano" stuff but in this case your body does need iron and it makes it safer.So the price of this, the ease of use (just like drinking water, swoosh around a teaspoon daily), the absorption/safety profile, this is a no brainer. However it's just so hard for me to wrap my head around this being anything than "just water". The science is behind it but I need more time to see if this supplement alone can keep my iron levels steady.In addition even though this is supposed to be a safer, more easily absorbed form of iron I had a pretty strong feeling of being able to breathe better when taking normal chelated liquid iron - the downside to this being that the taste was awful, and this one just tastes like water. I didn't really feel this supplement like that, but again I didn't feel the chelate pills either so take that as you will.I am still somewhat on the fence about this product as it seems in a way "too good to be true". I will come back to update the review if I can isolate that this is maintaining my iron levels, and would have no problem switching to this long term if that was the case due to the science behind it, the low cost, safety and ease of use.