I built a price-per-dose comparison tool for longevity supplements

Supplements
#1

Hi all,

I built a supplement price comparison tool that may be useful for people here who are comparing longevity stacks and trying to keep costs grounded.

It’s called TrueServing: https://www.trueserving.app

The basic idea is simple: instead of comparing bottle price or “price per serving” from the title, it reads Supplement Facts labels and normalizes products by cost per active dose. That matters a lot for categories like NMN, CoQ10, fish oil, spermidine, Ca-AKG, resveratrol, creatine, and magnesium, where serving sizes and label conventions can make two products look similar when the actual monthly cost is very different.

A few relevant pages:

Disclosure: I built this, and the site uses Amazon affiliate links. I’m sharing it because supplement cost comparisons come up a lot in longevity stack discussions, and I thought the underlying data might be useful to this community.

If there are categories people here care about that are missing or need better handling, I’d be happy to prioritize them.

Thanks,
Isaac

1 Like
#2

The first link I clicked on was an error.

The Thalacy spermidine calls it a 6 pack but the cost is for a single bottle.

I think most people prefer to buy from places other than Amazon. And pricing jumps around. I paid $12.95 for some Nutricost lithium 2 months ago from iherb that was $20 on Amazon. Now it is $15 on both iherb and Amazon.

#3

Too many fake products on Amazon, though I understand it’s easier to get prices via their API.