So I originally tried NMN with Prohealth. Seemed to have some subtle effects. I started putting it under my tongue after reading an article about it. I ran out, tried to order a larger amount and was backordered. So I went locally and found a vitamin shop capsule brand. I opened the capsules and put under tongue and they tasted way off. There was a hint of the same compound and flavor but definitely off. I then found this GENEX brand and checked out the reviews and decided to go with it. After the first test under my tongue with the larger amount I was very pleased to recall the exact same sensations. I'm an herbalist and have a decent pallet for recall and this product is legit.

I can feel the difference after taking it .I repurchased it again and again. I also purchased their other different products. I trust this brand.I feel more energetic, positive thinking, sleep better and healthy blood sugar control.

I use to fill my own capsules. It's more work but the taste is less when swallowed.

Strength and energy

This was my first time buying NMN and I was a little concerned it would not be legit. I'm not an expert, so I will defer to Dr David Sinclair. He says you should look for: *NMN that is certified pure by "Good Manufacturing Practice"....check *White or slightly grey flaky powder....check *Dr Sinclair says pure NMN has a "sour popcorn" taste......check *Dissolves completely in water within a half minute or so....checkThe first five days I felt quite warm by the end of the day (like I had a fever), but this went away.It could be a placebo effect, but I no doubt feel a rush of energy for about two hours after taking the NMN.As far as longer term effects, I will update this review.UPDATE: Five weeks into treatment:I'm 65 with grey hair and a grey beard. I didn't expect this, but my hair and beard are turning black (my original color). Also, I'm on the verge of being bald on top, and I'm actually growing new black hairs. In addition, my existing hair is much thicker.In addition, Five weeks into treatment you can throw out your viagra. Amazing sexual effects.Full disclosure, in addition to NMN I have been taking Metformin for two years. I also started intermittent fasting about the same time I started NMN.