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We've got roughly 800 vials of the 500mg in stock right now, and about 400 of the 1000mg — lead time is usually 3-5 working days, but confirm if you need cold chain shiping because of that it's lyophilized powder and stable enough at 2-8°C in dry conditions, though we ship with ice packs in summer.
Basically, if you're running anti-aging research or metabolic studies, this NAD+ works well at 99% purity — most buyers go with the 500mg vial for smaller batches, but the 1000mg is better value if you're scaling up (you'll get roughly 30% more per mg).
It's not suited for anything beyond research applictions, and we don't recommend it for human consumption — that's just the reality of how it's tested and packaged.
Each batch gets an HPLC test, and we'll send you COA with the shipment — the white to off-white powder dissolves easily in water, and we've had consistent results across three this year, so teh qualiy is pretty much solid.
Also, one thing buyers don't always ask but should: the lyophilized form is actually better than reagent grade for this because it's got tighter tolerance on moisture content, usually below 0.5% — we've seen that helps with stability in longer storage.
Anyway, we usually have stock, but the 1000mg vials can run out faster during peak months, so just give us a heads-up if you're ordering 50 units or so.
