Prostadine Batch Verification: Lot Numbers, Certificates and How to Check Them

A lot number identifies a production batch. On supplements it is usually printed or stamped on the bottle or the carton, often near an expiry date or best-before date. The label photographs we were given show neither a lot nor a date, so only your own bottle can answer.

1. Look on the bottle and the box

   Check the label's back and bottom, the carton flaps and the cap. Lot numbers are often inkjet-printed and faint.

2. Photograph it in good light

   A close, sharp photo of the lot and expiry gives you a record that does not depend on memory.

3. Compare it with the seller's reference

   If the format and prefix match PRO-26/PR-2341, note it. If not, ask why, because a different lot is normal for a later shipment.

4. Write down the date you bought and opened it

   Dates connect a lot to your order if a question ever arises.

A clean CoA shows that one batch passed certain tests. It does not show that the formula works, and it does not show the amount of each ingredient unless the report lists it. It is evidence about quality, not about benefit.

Facility status adds a little context but no more. The FDA registers food and supplement facilities, which is a legal requirement and not an approval or certification (FDA, Food facility registration), and FDA periodically inspects supplement facilities (NIH ODS, Supplements: What to Know). A registration number is therefore not a quality guarantee either, and “FDA-approved facility” is not a status the agency awards.

For the wider picture of how quality can be judged, read the testing and quality page. For what a buyer is entitled to see on a label, return to the label page.

1. Bladder wrack. Memorial Sloan Kettering Cancer Center, Integrative Medicine, 2022.Fucus vesiculosus is rich in iodine (no amount given). 'Claims of benefit with use of bladder wrack have not been confirmed in clinical studies.' Purported uses (weight loss, fatigue) lack supporting evidence. A case report links a 20-herb slimming product with bladder wrack to hemorrhagic cystitis. Bladder wrack from polluted waters may contain arsenic, cadmium and mercury.
2. Registration of Food Facilities and Other Submissions. U.S. Food and Drug Administration, 2026.Registration is a legal requirement under the Bioterrorism Act (regulations effective December 12, 2003) and FSMA (2011) that involves submitting information and assuring FDA can inspect; it must be renewed every other year. The page never describes registration as an approval or certification of a facility.
3. Dietary Supplements: What You Need to Know. NIH Office of Dietary Supplements, 2023.Unlike medicines, supplements do not require FDA approval before they are marketed. FDA periodically inspects facilities that make supplements. You are most likely to have side effects at high doses. Some supplements interact with medicines.