I always buy this brand and their Grapeseed extract. It's the only one on the market with 500 mg in a capsule, at least I couldn't find anything else with 500 mg. Most of the others I have checked out have only up to 100 mg in it.
I've been taking this one for 3 years now. Two capsules a day. Ever since I was a child I've had a post nasal drip, always needed a tissue handy, it was annoying and people kept asking me why I always have a cold/ runny nose.
Ever since I take this, I don't have post nasasl drip anymore. It disappeard after about 6 weeks of taking this. I am very grateful for this product and don't mind spending a few Dollars more for this super high quality product. Definitely recommend this.