This is an excellent formula. stumbled on this in a some store (I forget which) years ago and it has been my go to formula for anytime I start to feel a cold or congestion coming on. I take this and my congestion either goes away or lasts only about a day. It's recommended to not take goldenseal longer than 2 weeks without giving your system a break so I rarely it take it that long. This is definitely something to have on hand during cold and allergy season.