14 replies to this topic

[stephen_b]

From a Longevinex press release, it looks like Longevinex has upped their content of resveratrol from 40 to 100 mg. I had some back-ordered which came in yesterday at the new dosage, a nice surprise.

Because of a consumer demand for higher-dose supplements, the dosage of resveratrol in Longevinex® has now been increased from 40 to 100 milligrams per capsule.

To match the dosage found to be effective in the animal experiment published in Nature Magazine, 180 milligrams daily dose of trans resveratrol is suggested for a 160-pound adult human.

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If 4 boxes (30 each) are ordered for $104.85, that comes down to $1.14 per pill.

I don't know if it contained it before, but there's also 75 mg of quercetin, 25 mg of rice bran extract, and 100 mg of lecithin.

This is interesting for me, since I was one of the people who wrote him and suggested a higher dose supplement.

Stephen

[ageless]

I've been using Biotest Rez-v which has 100mg per tablet of highly pure resveratrol.... 72 tablets for $35 u.s. so approx. .50 cents per 100mg. I think Longevinex needs to be reduced in price to compete. Also newer research seems to be refuting their claims of instability from other supposedly inferior products.

[ageless]

NSI aka. vitacost also has a nice resveratrol product.

[niner]

According to the Longevinex website, it doesn't look like it contains 100mg of resveratrol. In its Supplement Facts listing, it says "Proprietary Longevinex Blend - 100 mg Providing not less than 15 mg of stabilized red wine polyphenols from a blend of proprietary French red wine extract and giant knotweed extract". In the animal studies, weren't they getting pure resveratrol? The Longevinex product isn't that. It sounds like the actual resveratrol is some fraction of "not less than 15 mg".

[health_nutty]

I've been using Biotest Rez-v which has 100mg per tablet of highly pure resveratrol.... 72 tablets for $35 u.s. so approx. .50 cents per 100mg. I think Longevinex needs to be reduced in price to compete. Also newer research seems to be refuting their claims of instability from other supposedly inferior products.

Isn't it 100mg per serving of 2 capsules?

[smcracraft]

According to the Longevinex website, it doesn't look like it contains 100mg of resveratrol. In its Supplement Facts listing, it says "Proprietary Longevinex Blend - 100 mg Providing not less than 15 mg of stabilized red wine polyphenols from a blend of proprietary French red wine extract and giant knotweed extract". In the animal studies, weren't they getting pure resveratrol? The Longevinex product isn't that. It sounds like the actual resveratrol is some fraction of "not less than 15 mg".

The vendor says in private that the old formulation had 40mg on average per pill.

However, I am not comfortable with this.

I want the stated amount in each pill to be on the box and on the website.

Period.

[ageless]

I've been using Biotest Rez-v which has 100mg per tablet of highly pure resveratrol.... 72 tablets for $35 u.s. so approx. .50 cents per 100mg. I think Longevinex needs to be reduced in price to compete. Also newer research seems to be refuting their claims of instability from other supposedly inferior products.

Isn't it 100mg per serving of 2 capsules?

Sorry, you are correct... 50mg per capsule. The website has it wrong as the bottle states 100mg per two capsule serving.

[niner]

The vendor says in private that the old formulation had 40mg on average per pill.

However, I am not comfortable with this.

I want the stated amount in each pill to be on the box and on the website.

Period.


Yeah, I'm with you on that. It seems kind of flaky.

[curious_sle]

They want no risk with the FDA as Resveratrol is since 1991 classed as a drug candidate so if they provide too much in a cap they could get shut down and as this is their only product... i wouldn't want to run the risk either.

Any way. How about the new Country Life Resveratrol 100mg? It mimiks the conditions of good storage performance in a study by beeing caped with grape seed extract and pine bark extract and is the first new product to come out after the studies so it has a decent ammount of resveratrol per cap. See iHerb or other place for it. I just ordered a one year supply for me :-). iHerb also has the fairly new Pommegrenate extract from Jarrows that looks real nice.

[luminous]

I received my shipment of Longevinex last week. Except for a sticker on the box which says, "Mfg. by Resveratrol Partners, LLC", I can't seem to even find the word "resveratrol" anywhere on the box or the literature that came with it. It only speaks of red wine polyphenols. Are red wine polyphenols the same as resveratrol?

The "Supplement Facts" on the box provide hazy information. A serving size of one capsule contains 100 mg. of "Proprietary Longevinex blend". Since a blend implies more than one ingredient, I assume this eliminates the possibility of 100 mg. of resveratrol.

Even worse, it says: "providing not less than 15 mg. of stabilized red wine polyphenols from a blend of proprietary French red wine extract AND giant knotweed leaf extract". I'd like to know exactly how red wine polyphenols are derived from knotweed leaves. Can we even be sure that a capsule contains 15 mg. of red wine polyphenols when they supposedly are derived from a BLEND of both wine and knotweed?

I think I'm going to stop buying anything with "proprietary" ingredients. It leaves too much wiggle room. Even though I've already taken a few of the Longevinex capsules, I'm tempted to try to get my money back.

As an aside: Longevinex claims that the product is captured into airtight liquid capsules specially produced in a nitrogen environment to prevent spoilage. The capsules are packaged in sheets of little bubbles covered by thin aluminum backing. To get a capsule out, you simply push the capsule through the thin aluminum. Yesterday, when I was trying to get one out that way, rather than emerging out, the capsule opened up quite easily, spilling its liquid contents all over its bubble. I have to wonder about the claim that these capsules are airtight.

[nbourbaki]

I just received a new shipment a couple of weeks ago, I compared a 6 month old box I had to a new box I just received. No differences in the amount of ingredients. I too believe I'm done with Longevinex, I've been buying the 12 pack discount from Purity. I violated my rule of avoiding proprietary products with Longenvinex and the press release doesn't seem to have translated into a change of ingredients.

[xanadu]

The shell game is coming to an end. The suckers have started to wise up. Save your money and buy from an honest vendor who will state the amount of resveratrol in the product.

[opales]

Stating resveratrol content is illegal, resveratrol is designated as an investigational new drug by the FDA. Resveratrol itself cannot be sold as a dietary supplement, only as grape skin/seed or red wine extract.

http://www.fda.gov/o...02/80022b41.pdf

[stephen_b]

I am not a lawyer, but I can point out that different vendors don't seem to have any issues with explicitly stating how much resveratrol is in their product. Ray and Terry's product, for example, states:

One 50 mg capsule, 1-2 times daily. This product contains 200 mg gross resveratrol per capsule, standardized to yield 50 mg trans-resveratrol per capsule.

I tried finding out some info on Country Life, but I couldn't see where it was stated that the resveratrol content was transresveratrol. Maybe the assumption can be made that, if you get your source from knotweed, a certain percentage is transresveratrol.

Stephen

[opales]

Bill Sardi commented this a while back

http://www.imminst.o...=40

This statement is false.  Life Extension Foundation, Advanced Orthomolecular Research, Jarrow Formulas, and Source Naturals all label products with resveratrol content, to name just a few.

Yes, and they ignore FDA regulations!

To say it again, resveratrol is a drug.  It was not being sold as a dietary supplement in 1994.  Solgar, a supplement company, attempted to market resveratrol a few years ago and was informed resveratrol is a drug.  Longevinex is labelled as a red wine and botanical extract.

Bill Sardi