My dad is 79 years old, he has COPD & Emphysema (continues to smoke but has cut down) and was rushed to the ER by ambulance because of severe congestion and he was wheezing extremely loud and had difficulty breathing. The hospital wanted to do a chemical stress test which can cause a heart attack and they were giving him dangerous meds so after the 2nd day, we checked out against doctors orders and left with him still very sick, but within a 8-days he is like new, his blood pressure was 211/92 and now it's 124/71. The only things we used was Serrapeptase, NAC, olive leaf extract and Nettle Leaf, magnesium lotion and at night he has warm water with a teaspoon of medicinal honey and two capfuls of Apple Cider Vinegar. He continues to take all the supplements and is doing fantastic! He cut down on Serrapeptase, he started out taking 2 Doctors Best Serrapeptase 120,000 3 times a day until the congestion cleared up and now he's just taking one at night. No side effects and he feels better than ever