quercetin makes supplements better?
- 03-14-2010, 10:09 PM
- 03-14-2010, 10:20 PM
Quercetin is a chromophore of the flavonol classification. I find a limited number of studies on its benefits as an anti-inflammatory but no studies indicating it has synergistic effects with other meds/supps. Can you explain why you think it would extend the half life of any, let alone all, supplements? Can you provide a study?Back.... for real this time
03-14-2010, 10:39 PM
03-14-2010, 10:49 PM
03-14-2010, 10:59 PM
I did notice caffeine lasted longer when i used it so would this make any supplement last longer?
also would other supplements do this? (ie stack it)
03-14-2010, 11:17 PM
IMO you're feeling an energy boost from the quercetin, not necessarily from caffeine. The answer is yes, you should be careful using quercetin with certain supplements.
Paging Dr. Banner. . .
03-15-2010, 03:35 AM
03-15-2010, 09:53 AM
03-15-2010, 10:06 AM
I would have to question based on this, why quercitin is included in some pct products-Stoked -to name one and others of similar make-up.Coming off a cycle , isnt there an excess of estrogen ?So why hinder clearance of it from the liver?
03-15-2010, 02:23 PM
03-15-2010, 04:35 PM
just researched quercetin a bit more and it would be hard to avoid this altogether if we like variety in our food , this was taken from Wilkipedia
"Foods rich in quercetin include capers (1800 mg/kg), lovage (1700 mg/kg), apples (44 mg/kg), tea (Camellia sinensis), onion, especially red onion (higher concentrations of quercetin occur in the outermost rings), red grapes, citrus fruit, tomato, broccoli and other leafy green vegetables, and a number of berries including cherry, raspberry, bog whortleberry (158 mg/kg, fresh weight), lingonberry (cultivated 74 mg/kg, wild 146 mg/kg), cranberry (cultivated 83 mg/kg, wild 121 mg/kg), chokeberry (89 mg/kg), sweet rowan (85 mg/kg), rowanberry (63 mg/kg), sea buckthorn berry (62 mg/kg), crowberry (cultivated 53 mg/kg, wild 56 mg/kg), and the fruit of the prickly pear cactus. A recent study found that organically grown tomatoes had 79% more quercetin than "conventionally grown".[
Ive also seen it listed as phytoestrogen quote Quercetin is considered a phytoestrogen (i.e., a plant substance with similar functions as that of estrogen ). Some phytoestrogens are believed also to have antiestrogenic effects that might lead to reduced risks of certain cancers.un quote ;source http://www.online-vitamins-guide.com.../quercetin.htm
So if it is antiestrogenic i can see why its included in supps such as Stoked but what i carnt understand is if it does slow the clearing process of estrogen down , does one cancel out the other?
Last edited by corsaking; 03-15-2010 at 04:39 PM. Reason: added text
03-15-2010, 04:51 PM
03-15-2010, 06:01 PM
Quercitin is not naringin, which is from grapefruit. Quercitin is a potent anti-oxidant and anti-histamine, iirc. Grapefruit/narigin increase the effectiveness of MANY drugs, so much so that you'll see warnings on the drugs affected about grapefruit, and it can cause an overdoae.quercitin does not use the same mechanism of action in the body, I'm pretty sure. Now piperine...that's another one.
03-18-2010, 07:23 PM
03-19-2010, 07:05 AM
03-19-2010, 08:44 AM
03-19-2010, 09:04 AM
Again i question whether enough research is being done by a supplement company before they come out with their products
Resveratrol has been shown to both inhibit and activate estrogen receptors in studies, according to the Linus Pauling Institute. Estrogen-dependent cancers, such as breast and prostate cancer, require estrogen hormones in order to grow. For this reason resveratrol could theoretically aggravate certain cancers with its mild estrogenic effect.
Resveratrol has been shown to have anticoagulant activity in vitro. Due to this blood-thinning effect, resveratrol could increase the risk of bleeding when combined with anticoagulant and anti-platelet drugs, as well as non-steroidal anti-inflammatory drugs such as aspirin and ibuprofen. Based on this theory, resveratrol could also interact with blood pressure medication, causing dangerous low blood pressure levels.
According to the Linus Pauling Institute, resveratrol may increase the bioavailability and therefore toxicity of certain drugs. If potent pharmaceutical drugs are more bioactive, they will be better absorbed, causing potential overdosage. Resveratrol may interact with HMG-CoA reductase inhibitors, calcium channel agonists, anti-arrhythmic agents, HIV protease inhibitors, immunosuppressants, anti-histimines and erectile dysfunction medications.
There are some other anecdotal effects reported by resveratrol users. Joint pain, tendonitis, stomach cramping and/or decreased appetite have occurred. Another possible side effect may be a jittery, caffeine-like feeling, which may be accompanied by insomnia. Diarrhea and numbness in the extremities have also been reported, according to Web For Health.com.
Although there is a caution note on the label , the company is not making users aware of the above.
03-19-2010, 09:47 AM
03-19-2010, 11:50 AM
03-19-2010, 11:57 AM
I've been taking rez/quercitin for quite awhile. I don't take any meds so its not an issue. Have had dry joints at higher doses, but overall the combo makes me feel awesome mentally and physically. It has literally taken my endurance training to an all new level..and makes it feel great to boot.
But yeah, I researched all the same cautions etc and keep them as a consideration.
03-19-2010, 12:14 PM
03-19-2010, 12:32 PM
Its usually dose related, doses under 500 mgs are usually tolerable. A 250 mg licap daily shouldnt produce intolerable sides. Res. and Quercetin should be taken at matched doses. It works guys!
03-19-2010, 02:07 PM
03-19-2010, 03:22 PM
03-20-2010, 11:04 AM
Somr simply cant use some supplements without getting sides. A person can either tolerate Quercetin and Resveratrol or they cant. The major factor is purity, that includes fillers, excipients, emulsifiers, etc. As Arnold said, "There are sides with everything."
03-21-2010, 09:14 AM
so often supplement companies take a phrase out of context from a report /study and useit to sell the product.
Bodybuilders/weighttrainers/fitness enthusiasts are a different breed to day than say a decade ago.We live in a culture where we question everything .supplements should be no different.I wont name names but we all know the companies that insult our intelligence by making the wildest claims what a certain product will do , then expect us to believe it by placing a professional bodybuilder by the side of it.
i could go on but this is going off topic -i apologise for that .
03-21-2010, 11:54 AM