com Magnesium Glycinate Powder - Magnesium Supplement for Bone & Muscle - Gluten Free - 1250mg (225mg of Magnesium) per Serving, 800 Servings (1 Kilogram - 2.2 lbs)

It does have a fishy smell but it is great not to have my muscles cramping on me.

The title of my review should not be construed as a problem with the supplier Bulk Supplements. I consider this product to be a commodity with inherently unavoidable characteristics. See also my in-depth answer to the posted question: "Does this dissolve in water?" The water supplied by our local utility is quite soft. When I vigorously agitate the labeled serving 1/4 tsp of this powder in 12 fl oz of Brita filtered tap water (boiling) I observe that almost all of the powder remains undissolved. After the powder particles settle, a flocculent remains suspended. Next, I try a sip of this mixture and there is a sharp, pungent taste of ammonia. Having some chemistry knowledge, I knew that flocs form as a result of pH conditions. I also knew that aqueous ammonia is alkaline. So I tested a hypothesis that an acid solution might completely dissolve a given quantity of this powder, and also simultaneously release its ammonia into the atmosphere. It turned out that 2 Tbs of boiling white vinegar (labeled as 5% acidity) was just enough to completely dissolve 3/8 tsp of this powder while preventing flocculation and avoiding dissolution of ammonia. This enables 245 mg of elemental magnesium to be absorbed via an empty stomach. But I will instead choose to consume magnesium citrate powder, even though it too is practically insoluble in water. I experimentally discovered that 11/16 tsp can be completely dissolved in just 1 Tbs boiling vinegar. Thus it has approx 5.5 times the solubility of magnesium glycinate (in vinegar). Moreover, it contains 16% elemental magnesium, whereas magnesium glycinate contains only 14% elemental magnesium. So 11/16 tsp of the citrate powder has 383 mg of magnesium. Considering that the gycinate powder is denser than the citrate powder, in order for the glycinate powder to match that I would need just 0.59 tsp of it. But... The magnesium glycinate must first be dissolved in 4.7 Tbs boiling vinegar. No, thank-you. Perhaps this product should be regarded first and foremost as a source of glycine rather than primarily as a source of magnesium. However, beef gelatin is also a source of glycine, and its ammonia (if present; probably not) is low enough so as to be tasteless. Moreover, it's easily dissolved in boiling water, obviating the need for vinegar, which is corrosive to tooth enamel. But its dry granules have a glycine content of only 27%, compared to this product's glycinATE content of 86%. Suppose I consume 1 Tbs of beef gelatin granules (after dissolving them in boiling water). I would be getting 2.6 g glycine. In order to match that in glycinATE, I need only consume 0.64 tsp of this product, but the caviat is that it must first be dissolved in a little over 5 Tbs boiling vinegar. Again, no, thank-you. In summary, the alternatives to this product are not only inexpensive, they are also more effective (superior solubility) and are FAR SAFER (This item is contaminated with ammonia and at least one insoluble powder). So if magnesium is the reason for your consideration of this product, then magnesium citrate is the better choice. Or if glycinate is what you're after, then choose gelatin granules instead of this item.

I originally bought this product assuming, based on the description, that it was pure magnesium glycinate. It wasn’t until I noticed how poorly it dissolved that I went back and checked the nutrition label more carefully. Turns out it’s not pure magnesium glycinate at all – it’s mixed with magnesium oxide, and the label doesn’t clearly state what proportion is which. Judging from how much of it doesn’t dissolve, it feels like a pretty high amount of magnesium oxide. I feel seriously misled by this and consider it extremely dishonest branding. This experience has completely destroyed my trust in this brand, and I won’t be buying any of their products again.

I’ve taken Magnesium Glycinate for years in powder form from multiple suppliers. This came up as a sale over Christmas, it was cheaper than usual, and why not try a different brand. How wrong I was. After placing the recommended amount in your cup, it starts with the horrid taste. Think bitter chalk powder mixed with water followed by a metallic aftertaste. Further into the adventure the stomach churning starts, not that bad that you’ll throw up, but bad enough to make you feel generally off. Later is when the fun starts. Plenty of alone time on the toilet wondering if it is your soul trying to leave your body, when it is really just your supplement making its way through. Be thankful you didn’t have chilli for dinner. Magnesium Glycinate has never given me any negative side effects, even at extreme doses. Don’t buy this, even if you need easy bowel movements, increasing dietary fiber is way easier and less explosive.

I am a long time user of mag glycinate, taking 400 mg in pill form every evening with no hint of a problem. Maybe it helps me sleep better, maybe it makes my feet and legs cramp less, maybe it makes up for what I lose by taking a daily diuretic, I don't know for sure, but it goes down easy and gives me peace of mind. Although I use potassium bulk supplements and have taken mag citrate (which gives me serious GI distress) in bulk form, this was my first attempt at mag glycinate in bulk formulation. I have to say, I'm not that sensitive, but this stuff tastes absolutely vile. It also caused me RAGING intestinal distress, which I have never before experienced with a full daily dose of magnesium glycinate in pill form. I am very suspicious of the recommended dosing. My one-kg bag says the dose is 1250 mg (1.25 grams) of powder, which will give you 225 mg of magnesium. Supposedly this is approximately 1/2 tsp, which is highly inaccurate. I weigh things. One level teaspoon, measured accurately and leveled precisely, is just under one gram, about 950 mg to be exact. To get 1250 mg, or barely over half the recommended daily intake, you'd have to eat 1 1/4 teaspoons of this powder. To get the full RDA of around 400 mg of magnesium, you have to eat 2222 mg, or 2.22 grams, of this powder. In measuring spoons this turns out to be about 2 1/4 teaspoons. That is a crazy amount of this powder to get down. The first night I choked it down, mixed with water, gagging the whole time. I paid the price, all night long. The next day I bravely mixed it into a liter of water with my usual potassium, salt, and lots of lemon juice, and attempted to sip it throughout the day. After a few attempts I poured half off for another day, doubled the water, added more lemon juice . . . . and still, I am not able to drink this vile stuff. It is sickeningly sweet, while at the same time tasting of fetid, rotting fish flesh. Every time I manage to choke down a couple of highly diluted sips, I am shortly running to the bathroom. Either the recommended dosing is way far off, or this is not mag glycinate, or something is very badly wrong with it. Not a pleasant experience.