My first order with ProHealth was 30 250mg lozenges and 15 grams of NMN powder. I had decided to do the sublingual for better absorption and try both forms. I use the powder at home and the lozenge if traveling. I’m a 75 year old male in good health and started 250mg per day for a few weeks, then transitioned to 500/day. I had no issues with the dosage. I feel good with plenty of energy, but have not experienced any dramatic improvement in any area…still feel good. Not sure which form i prefer ? The powder has a somewhat sour taste, but dissolves quickly in a few minutes, and with a couple sips of coffee, there is no aftertaste…not bad at all. The lozenges are a little more user friendly, just pop one or two under your tongue and wait for it to dissolve which takes longer than the powder..probably 7 or 8 minutes. Big difference is the lozenge has a pleasant flavor. Overall very happy with the product and will reorder a larger amount of the powder and another 30 lozenges. Think the powder will be my go-to product. Hope to get my order in before the feds shut it down.