Is it safe to use e-cigarette

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markfm

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LD50 for PG is around 20 g/kg (http://www.thermo-dynamics.com/pdfiles/MSDS/Prop_Glycol_USP_EP_msds.pdf).

Even a quite small person, 50 kg, would have to ingest a liter to reach that point. A fairly heavy vapor consumes order of magnitude 6 ml/day, far below the toxic threshold.

I've not heard of any risks relative to liver, kidneys, lung, at least at sane levels. PG was historically used as a disinfectant in hospital ventilation systems, and has been used as the carrier base for inhaled anti-rejection medications used by lung transplant recipients. (search on cyclosporine)

Basic sensitivity is a separate thing. Some people are sensitive to Glycerine (aka VG), some to PG, some to various flavorings, the same as people are sensitive to these items in food products or skin lotions.
 

Rachy_B

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Propelyne glycol is the same stuff as in asthma inhalers, fog machines and mouthwash.

Vegetable glycerine is the same stuff as in sore throat medication. Also, as a suppository it can be used as a laxative (Seek medical advice! Do not try this at home!)

To answer your question more broadly, however, whether or not PVs are 'safe' has not yet been proven. What we can say with a degree of certainty is that they are 'safer' than tobacco smoking. 4000 known carcinogens vs...0, for example! Many people here have reported that their health has improved and medical professionals have been amazed by their changes in lung function, xrays, and other medical conditions.x
 

flintlock62

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Please put those cancer causing cigarettes down, and start vaping! Where it is not proven to be 100% safe, the alternative is that cigarettes DO cause cancer, emphysema, asthma, and other health problems. They have over 4,000 chemicals, and around 60 of those are known to be carcinogenic. Nicotine is not the problem, it's the tar and other chemicals.

Yes, I'd say e-cigarettes are safer.

Edit: My blood pressure is now 15 points lower than when I was smoking.

Now i feel save, thanks.Before these i'm a smoker for the past 35 years.
 
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exnihilo

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Where is your information on PG being toxic? I know it can be an irritant for some people, not not toxic.

Post #5 has it, also:

The acute oral toxicity of propylene glycol is very low, and large quantities are required to cause perceptible health damage in humans; propylene glycol is metabolized in the human body into pyruvic acid (a normal part of the glucose-metabolism process, readily converted to energy), acetic acid (handled by ethanol-metabolism), lactic acid (a normal acid generally abundant during digestion),[12] and propionaldehyde (a potentially hazardous substance).[13][14][15]
- Wiki

cg
 

markfm

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There are over 4000 chemicals in cig smoke (a lot come about through the burning process); there are over 50 known carcinogens in that group, including the pretty nasty ones known as Tobacco Specifc Nitrosamines (TSNA). At least some eliquid tests have found trace amounts of TSNA, at the level (small) found in approved NRT products (like the patch and nicotine gum); the risk from TSNA increases with the level of them, and in standard eliquid's case it is really small.

Safer, yes; Safe, no, IMO. This is a statistics thing, I would say vaping is a heck of a lot better than smoking, but not vaping is safer than vaping. Vaping is a significant risk reduction, but there are likely at least some residual negatives, if only due to nicotine (which has some benefits as well as some negatives for certain people). On the other hand, given the risks with anything else in life, I'm personally comfortable with vaping, since with it I've broken a 37 year smoking habit.
 

flintlock62

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You are correct about the studies, but if we continue smoking for years until they have the answer about e-cigs, we'll all have cancer from the analogs for sure.

On the other hand, they can't even decide about eggs, one day they will kill you, the next day, they're healthy. S

Yeah, there aren't enough studies yet and we don't know the long term effects because it is a new product, we'll have to wait years to see if there are any long term effects. But it does look safer than tobacco.
 

exnihilo

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OK , so who consumes 20 kg?

A far-sighted ill tempered elephant?

As far as proving anything, no. Semantics are naughty and my nipples are still sore from last night.

Or, try this: Grab a sheet of clean white 24# 96% brightness paper. Cover half of you statement in post #13. Read it 12.6 times. Now do the same, but cover the other half of your statement and read it 6.8 times. Repeat until it makes sense.

I'll be here all week. Don't forget to tip your waitress. And for * supreme being's* sake, quit drink so much water! It's toxic...

cg
 
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flintlock62

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A far-sighted ill tempered elephant?

As far as proving anything, no. Semantics are naughty and my nipples are still sore from last night.

Or, try this: Grab a sheet of clean white 24# 96% brightness paper. Cover half of you statement in post #13. Read it 12.6 times. Now do the same, but cover the other half of your statement and read it 6.8 times. Repeat until it makes sense.

I'll be here all week. Don't forget to tip your waitress. And for * supreme being's* sake, quit drink so much water! It's toxic...

cg

Although PG can be toxic in HUGE levels, generally they are safe. PG is the same stuff used in asthma inhalers and fog machines. ;)

cg

To clarify, and to make sense, your own post............ PG is Toxic on HUGE levels, but generally safe. Does that make sense?
 

ClippinWings

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I.m using e-cigarette for the past few day.Someone told me,that the liquid i'm using have propylene glycol ang vegetable glycerine.Is it safe to use because it can damage our kidney,liver and lung.If so,can it be replace with other liquid.Please answer?:ohmy:

Totally safe?

There have been no difinitive studies...

But who cares!

The real question is inhaling vapor safer than inhaling the 4,000+ chemicals and carcinogens in Cigarette smoke?

Hint: the Answer is YES.
 
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