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New US Diet Guidelines: What Not to Eat
Instead of just giving Americans a list of healthy food choices, the federal government takes a stab at showing us what not to eat. Get the facts here.
For a long time there has been a warning about the consumption of grapefruit juice and a few meds. The package insert for simvastatin warns against a quart or more.
But new study indicates that many more drugs are affected and it can happen with a small glass of juice and probably a 1/2 of whole grapefruit. And the affect can last over 24 hrs.
Also some meds for cancer, inflammation, diabetic, and several other conditions are also affected.
From a blog on theheart.com here is a list of the heart related meds.
http://blogs.theheart.org/melissa-walton-shirley-blog/2012/11/27/grapefruit-forbidden-fruit-or-juice-or-both
For now, there are enough data to support the recommendation for banning grapefruit and grapefruit juice altogether from the diets of those on certain cardiovascular medications. For laypersons who read my blog, I'll add the names under which these compounds are marketed. (For a more complete list, check abcnews.com.) They include:
Rhythm agents:
Amiodarone (Pacerone).
Dronedarone (Multaq).
Quinidine (not commonly prescribed).
Cholesterol agents:
Atorvastatin (Lipitor).
Lovastatin (Mevacor).
Simvastatin (Zocor).
The new anticoagulant rivaroxaban (Xarelto), prescribed in placed of warfarin in some.
High-blood-pressure meds:
Nifedipine (Procardia).
Verapamil (Verelan).
Felodipine (Plendil).
Antiplatelet agents:
Ticagrelor (Brilinta).
Clopidogrel (Plavix)—in this case, it completely nullifies the effect of Plavix instead of exaggerating it, as in the other meds listed above.
In addition, there is an interaction with the heart-failure diuretic eplerenone (Inspra).
I note that sirolimus is also listed here, and I'm curious about patients with stents coated with sirolimus (the older Cypher stents), but I don't know of any data or case reports that directly address this issue.
Here is a news story about this. http://abcnews.go.com/blogs/health/2012/11/26/grapefruit-medicine-interaction-warning-expanded/
And here is a list of the meds, the effect, and possible alternates from the Canadian Medical Journal.
http://www.cmaj.ca/content/suppl/2012/11/26/cmaj.120951.DC1/grape-bailey-1-at.pdf
I was surprised to read that grapefruit juice is consumed by approximately one fifth of Americans for breakfast . I've never been a fan - too sour! Give me coffee and I'm happy
More here: Grapefruit juice blocks a special enzyme in the wall of the intestine...when that enzyme is blocked, it is easier for those medications to pass from the gut into the body, raising the blood levels of these drugs...high levels of some drugs can be dangerous and can lead to toxic side effects.
I thought this was interesting too: Amazingly, this remarkable food-drug interaction was discovered completely by accident over a decade ago.
Click here for interaction information: Grapefruit Juice WARNING: Major Interactions - Do Not Take These
Combinations
Haylen
I have not tried this recently, but years ago when I was on business and had breakfast at a hotel I would try and get pineapple/grapefruit juice. The mix complimented each other.
Here's the WebMD article on this new information, published yesterday:
Drugs That Interact With Grapefruit on the Rise
Nov. 27, 2012 -- The number of drugs that can be risky when taken with grapefruit is on the rise, largely due to the influx of new medications and chemical formulations, a new study shows.
Thanks again Bill for bringing important information to our attention - I appreciate your participating here!
H
Thanks, BillH99, for recognizing "data" as a plural noun. It and other Latin words (e.g., "medium", "media") are routinely abused by people never introduced to the language.
It should be mentioned in the package insert that can be the Lipitor.
WRONG!!!
Just as some people can have a bad reaction to statins, but most don't - some people can have a bad reaction to grapefruit, but most don't.
http://www.livestrong.com/article/497184-dangers-from-grapefruit/
While most people can eat a grapefruit a day with no problems, several a day may cause a number of severe or chronic problems.
Some common signs of an allergy include hives, stomach cramps, itchy mouth and even anaphylaxis. If you think you may have an allergy to grapefruit, it is important to get an allergy test to prevent any life-threatening complications that may result.
Still, it would be nice to have a large glass of freshly squeezed grapefruit juice again.
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