I'd hoped that this was true too. But after spending a lot of time reading and digging, I decided that, for myself, GSE was too risky. Though not the best source (I don't have time to look up the studies I read earlier, sorry), this
Wiki article seems to sum up the arguments. Here is a quote from them:
Yes, the Wikipedia was one of the first things I read on the subject. But when I read some of the linked papers I found the Wiki article very selective and biased, and even puzzling. For example, it says "
Natural GSE has no antimicrobial properties." But several studies find that it most definitely has. How natural does it have to be? It's an extract - it's not claimed to be in its raw form. Essential oils are made by various kinds of extraction methods, commonly using solvents or CO2, but I think that most people still regard them as natural.
I don't think there would be so many widely-used GSE/Citricidal products for internal use on the market, sold by respected brands, if they were all contaminated, especially when you look at how regulatory authorities are going after natural products and trying to get many of them banned, at least in Europe.
I don't know why the Wiki article keeps citing 'contamination' and 'ethanol' in regard to the article I linked to. Here is the description in the article about how the GSE was made:
TABLE 1. NUTRITEAM’S METHOD OF PROCESSING GRAPEFRUIT-SEED EXTRACT, CITRICIDAL®
- 1. Grapefruit pulp and seeds are dried and ground into a fine powder (by product of expeller-extracted grapefruit juice).
- 2. The grapefruit powder is dissolved in purified water and distilled to remove the fiber and pectin.
- 3. The distilled slurry is spray dried at low temperatures forming a concentrated grapefruit bioflavored powder.
- 4. It is then dissolved in vegetable glycerin and heated.
- 5. Food grade ammonium chloride (NH4Cl) and ascorbic acid are added and this mixture is heated under pressure (NH4Cl remaining in the final product 15% to 19%, Ascorbic acid (C6H8O6) remaining 25 mg/q to 30 mg/q).
- 6. This compound undergoes catalytic conversion using natural catalysts (including hydrochloric acid [HCl] and natural enzymes).a
- 7. The slurry is cooled, filtered, and treated with ultraviolet light.
a Note: No HCl residue is present in the final product.
I am happy to keep taking it from time to time anyway! I have never observed any ill effects, but have often seen positive ones, notably on my gut.
EDIT - just did a very quick search on PR for 'grapefruit seed extract' and didn't see any posts that clearly indicated adverse reactions, but several positive posts. There are unfortunately only 2 comments and votes on GSE
here, neither from me! Both positive.