Vinegar test for prenatals

Any ladies try the vinegar test for your prenatals or fertility supplements you are taking? If you've never heard of it basically you take a cup(s) and fill it with white vinegar, then you add your prenatal to it and wait 5 minutes. If it doesn't start dissolving on its own before then chances are your body isn't absorbing it fast enough and you're most likely passing a chunk of it whole when you go no. 2

I'm not sure how official or legit this is but it certainly is interesting. Some of those suckers are super dense and tightly packed!