Biotest Coupons?

Every time I place an order it has a spot to enter a coupon. Am I missing something? I’ve never received a coupon or seen an offer for one, just curious if there’s something I’m missing?

Biotest runs a special every once and again. They are usually pretty sweet too! Just keep an eye on the main page.

That doesn’t necessarily say anything about coupons…I’ve been on the site for over a year, and I’ve seen the sales, but no coupons…

Do the gift certificates work via coupon code?