Hi all!
I wonder if you could tell me the difference between generic glycerin and vegetable glycerin. I bought glycerin today from drugstore (it is our local production glycerin, not imported from somewhere). The instruction said that it can be used both internally and externally. But it is just glycerin not vegetable glycerin. And I asked in many drugstores and no one heard about vegetable glycerin. What is the difference?? Are they the same? And, what is the most important, can I use the glycerin I bought for smoking?
I did not find any relevant information on the web as well.
Thank you in advance.
From another post with a few additions:
I'm a pharmacist in PA. I'm going to copy and paste a post I wrote in another subforum:
Go to the skin care aisle of most any pharmacy and you'll find a small(usually 6oz) bottle labled Glycerine, USP(Some pharmacies don't carry outright , but will special order for you). The label may have it listed as CVS Glycerine, USP or Rite Aid Glycerine, USP or Humco Glycerine, USP or Family Pharmacy Glycerine, USP etc.. you get my point. Whatever it's labeled, it's Glycerine, USP 99.5% anhydrous(check USP monograph for the additonal allowances on the remaining 0.5%). It will cost anywhere from $3 to $6 for 6oz.(CHEAP). This is vegetable glycerine, absolutely, positively, no doubt. How do I know this? Most All OTC glycerine,USP is made by 1 single manufacturer, HUMCO. It is then contract packaged into the different pharmacy labeled bottles. I've personally called HUMCO and spoke with their QA(quality assurance) person. He assured me that HUMCO's Glycerine is in fact Vegetable source Glycerine. From their company information I'll pass along the following:
Among our wholesale customers are McKesson Healthcare Solutions, Cardinal Health and AmerisourceBergen(which is the Family Phamacy and Good Neighbor Pharmacy labels) along with most regional wholesalers. In addition, Humco supplies products to Walgreens, CVS, Rite Aid and Wal-Mart. (which covers, ostensibly, all major label OTC Glycerine, USP)
So any Glycerine, USP labeled in any of the above mentioned Pharmacy lables(i.e. Family Pharmacy, Good Neighbor Pharmacy, CVS, Rite Aid, Walgreen's and Walmart labels) IS USP grade AND Vegetable sourced.
The reason it's labeled Glycerine and not Vegetable Glycerine is because #1 it is listed in the USP as Glycerine, USP and therefore(in order to keep the USP certification) must be labeled as it's listed in the USP. #2 it would cause confusion as Glycerine is Glycerine(regardless of the source - chemically 1,2,3-propane triol), to add the moniker VEGETABLE, makes it sound like it's two different and distinct products, it isn't. Also, USP grade Glycerine is the purest you can get. Food Grade "vegetable Glycerine" you get in health food store saying 99.9% is misleading. Since they do not have to meet any stringent labeling standards(such as FDA/USP standards) they could say anything(refer to the Dietary Supplement Health & Education Act of 1994 for further information) . If you get USP grade, you know you are getting exactly what is labeled(within allowable USP limits) and it is made to most stringent requirements(cGMP) available in the US. (i.e. USP stands for United States Pharmacopeia- drugs have meet higher standards then foods do). Kashrut(kosher) laws are Jewish religious dietary laws having to do with the preparation of food products and really have nothing to do with the labeled purity of the product. Also, Kashrut(kosher) laws are jurisdictional(handled differently in different places). In some cases a rabbi must come to the manufacturer and verify processes and equipment conform to kosher law and in some places it's enough that the manufacturer says or thinks he is conforming to the kosher laws. In any case USP and Kosher are 2 different things. There is no such listing in the USP for "Kosher Glycerine". To the people who are feeling naseous using pharmacy bought Glycerine, USP, it may be a placebo effect(thinking your not using the real VG) or you may have a sensitivity to Glycerine(unlikely). But it is not because the Pharmacy bought Glycerine,USP is inferior or NOT Vegetable Glycerine.
For Vapers who may have Porcine(pork) allergies or are avoiding Porcine source products for religious reasons(Orthodox Jewish or Islamic Vapers), you can use any of above Humco packaged Glycerine, USP with assurance it is a vegetable sourced product and made to the highest USP compendial standards.
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