Contact

Everything to do with this site arrives at one address: hello@glucopreil.com. It is read by the people who write these pages.

Worth sending here

• A figure on a page that no longer matches the seller's checkout
• Something here that reads as wrong or out of date
• A broken link or a page that will not load
• A question about how the site is funded

Better sent to the seller

• Where an order has got to
• Changing an address, a quantity or a payment method
• Opening a refund inside the sixty day window

Their address comes with the order confirmation. Nothing about an order is visible from here, so a message sent to the wrong place only costs a day.

Health questions

These belong with a pharmacist or a doctor, and on a product in this category that is not a formality. Berberine interacts with a number of prescription medicines, and only someone with your full list in front of them can weigh that.

Corrections

Corrections are the most useful post this address gets. Name the page, quote the line, and say where a better figure came from; a link to the seller's own page carrying a different number settles most of them in a single reply.

Prices and guarantee wording are the two things that drift, and neither change is announced to this site.

Replies

Read in order, usually answered inside two working days. Nothing sent here joins a list, and nothing is forwarded to the seller.

What this site will not do

It will not print a claim it cannot trace to the label or to the seller's own material, and it will not publish a figure nobody has disclosed. Where something is unknown, these pages say so, which is occasionally unsatisfying and always better than the alternative.

It will also not write customer experiences. None are published for this product that can be verified, and inventing them would be the easiest and the worst thing this site could do.