Doctor's Best Quercetin Bromelain, Immunity Support Capsule, Heart, Joint & Healthy Respiratory System, Non-GMO, Vegan, Gluten Free, Soy Free,180 VC

Unlike many other reviewers, I do not take these for asthma or seasonal allergies. I currently take them for headaches, what I call migraine headaches and what my doctor calls tension headaches (we disagree).I've had problems with headaches for quite a few years now and have always "carefully" used Advil, which usually helped but didn't completely take the headache away. More recently I've been having more headaches and they are powerful bad ones, pain on both sides of the head, tension in the neck and upper back, lasting about 24 hours (+/- 4 hours), and usually include some stomach discomfort such as nausea and lack of appetite. In the past I blamed many of my headaches on caffeine (too much or not enough) but I found those headaches usually went away after a couple hours of sleep. The headaches I get not do not usually diminish with sleep and if I don't take anything for them, the pain prevents me from sleeping.In the past year I discovered that I was getting headaches every time I consumed pepper - red pepper, chili pepper, cayenne, tabasco, jalapenos, and even red or green bell pepper. Even the tiniest amounts such as contamination would cause one of my severe "migraine" headaches. This has been debilitating as I don't cook much and pepper is in many prepared and restaurant foods, often hidden in ingredients such as "spices" or "natural flavorings", or even just getting in stuff through contamination (same grill, same oil, etc). I grew up heating hot peppers all the time and I love eating at Chipotle's so it's been hugely disappointing to develop this problem. I've found a few other reports online of the same, but it does seem to be a very unusual problem.Just recently I've discovered that if I take one or two of these as soon as I feel (or suspect) a headache, it seems to stop the headache completely. I do get dry mouth and sometimes urinate a little more than usual as quercetin appears to be a diuretic. Quercetin is also a vasodilator (relaxes or "dilates" blood vessels) as it seems to increase nitric oxide in the blood. Vasodilators are generally considered the cause of migraines, so it seems odd that one vasodilator (peppers) will cause me a headache and another one (quercetin) will take it away. Likely the real mechanisms involved here are more complicated than that. I am pleased though to find that quercetin has this affect as Advil seems to be causing me ulcer-like symptoms (nausea, bloating, acid reflux), even at doses as small as (2) pills every five to seven days.University of Maryland Medical Center's website says that Quercetin has been known to cause kidney damage at doses greater than 1g (or 1000mg) per day, though I cannot find any scientific study showing that. Each capsule contains 250mg so (4) of these in a day might put you in kidney damage zone. I'm really careful, only taking them when I need them, and I usually try to take only 2 or max 3 in a 24 hour period. I don't think kidney damage can be detected in its early stages so you do want to be careful with these. However, oddly enough, quercetin has also been shown to protect against kidney damage or to help people who have kidney disease, so the studies here seem to be conflicting.I suspect the headache reducing effect for me will be short lived, or else I'll end up finding out that it also had to do with something else I was doing at the same time as I have been trying other things like cutting out caffeine, exercising, and experimenting with a few other supplements. If I have any more definitive information to add, I'll try to remember to come back and update this review. For now, I am sure that quercetin does take my bad headaches away as I've proven it numerous times (but it does seem to work best if I catch it early).

Better than Pseudoephedrine. Works well with my blood pressure medication and I can take as much as I need with hardly any side effect. When my sinus was infected, I used this in larger quatities, about 4 to 6 per dose, twice daily, and I got some minor leg cramps, but with only one of two a day to treat my day-to-day regular sinus problems, I have no side effects whatsoever.Bromelain is all natrual and is found in Pineapple, the only bromiliad plant that humans can consume with impunity, and is found in meat tenderizers and marinates. It helps to loosen mucous and break it down.Quercetin shuts down the mucous generator, which is something most mucous medications can't do.I use this in conjunction with Fexofenedrine and it works pretty well to control my allergies here in Michigan. Many people that live here have the "Michigan Sinus" which is infamous here in Michigan which my doctor told me about. He approved of this regimine with the Quercetin and Bromelain when taken with my anti-allergen of choice. In my opinion, if you have high blood pressure, this is a cheaper, safer alternative than pseudoephedrine.

I developed chronic sinusitis due to a Eustachian tube dysfunction caused by allergies, Not that my nose seemed to be clogged up I didn't notice any clogging in my sinuses but my ears would feel full and my hearing would be muffled. The past few years I would constantly end up at the doctors office to get antibiotics and when my ears would be full they told me I had a dysfunctional Eustachian tube and I had no clue what was causing it. But antihistamines would help subside the symptoms causing me to think it might be inflammation.Long story short knowing the side effects of taking antibiotics frequently and feeling weighed down from taking allergy pills, even on daytime medication. I started looking for alternate solutions and after reading all the reviews on this product I gave it a try and these past few months have been great. No more sinusitis no more clogged ears. If I feel like my nose is starting to clog up even from a cold, I take the product and my sinus is clear. No more nasal sprays (steroid). Hopefully with pollen season coming up, it will work as well as it did for me during winter season. I am keeping my fingers crossed.Since this information is not on the bottle I think people should know. After doing some research I found out, people with kidney problems should not use this product. And in some cases taking 1g of bromelain have led to kidney damage. So please use the supplement as directed, or if you use other supplements which include bromelain be careful not to over dose. This will mean if you take this product four times a day, since one dose is 250mg it would be 1g. Also long term usage of bromelain has not been tested so they do recommend taking breaks.

I have been using a quercetin bromelain combination for a very long time. I actually carry a few capsules in a tiny container connected to my keychain. I take one or two every night to prevent nasal congestion. I also occasionally get a tickle in my throat that won't go away and I cough like crazy until I chew up a capsule of quercetin or a bromelin quercetin combination. I used to use Now brand but have gone through a couple of bottles of Doctor's Best since it was a better formula (more bromelain). However, the last bottle of Doctor's Best tastes like horse manure. I have been chewing bromelain and/or quercetin capsules for a long time and never had this before with Now brand or two previous bottles of Doctor's Best, but am about to throw away the current bottle to get Now instead.