Vaping has side effects, and most regular vapers run into at least one of them. This guide lists the common ones, explains where each comes from, and notes the adjustments vapers usually make in response. It is general information, not medical advice. Nicotine is addictive, and the simplest adjustment for nearly every item below is to vape less often.
Effects linked to PG and VG
E-liquid is built on two base ingredients:
- Propylene glycol (PG)
- Vegetable glycerin (VG)
Both are hygroscopic, meaning they bind to water molecules in the body. Because vapor enters through the mouth, that is where the effect shows first.
Dry mouth
This is among the most frequently reported side effects. PG usually gets the blame, although people who vape pure VG report it as well. Two things vapers try: a mouth-to-lung draw in place of direct lung inhalation, and a liquid with less PG, accepting that the throat hit will be weaker.
Dehydration
The same water-binding property can dry out more than your mouth. Urine color is the usual indicator. Nearly clear means you are well hydrated; darker and less frequent means your body is short on fluid. Other signs include fatigue, bloating, dry eyes and intense thirst. If you feel you could put away a gallon of water, dehydration is the likely reason.
The response is to drink more water across the day. Heavier vaping calls for more water to replace what is lost, and vaping less often makes staying hydrated easier.
Effects on the throat
Irritation and inflammation
Juice has to be heated to become vapor, so what reaches your throat is warm. Warmth by itself can irritate, and the chemicals carried in the vapor add to it. The body treats those chemicals as foreign and answers with an inflammatory immune response, the same one it uses against infection. Each session aggravates the throat again, which means frequent vapers have more to counteract before things settle.
Sore throat and coughing
Soreness tends to follow irritation. Newcomers get it most, since their throats react strongly to chemicals they have not met before, but it also shows up in frequent vapers who do nothing to protect the throat from damage. Coughing is the body trying to clear the irritation.
If you are new and cough on every puff, test the airflow of your device without firing it:
- Feels like a coffee straw: the device is built for a mouth-to-lung draw.
- Feels like a milkshake straw: it is a direct lung device, where you pull vapor straight into the lungs and exhale right away.
When one style makes you cough, try the other. Check the nicotine strength of your juice as well, because that can also aggravate the throat.
Effects linked to nicotine
Headache
With dehydration and coughing already on the list, headaches are no surprise. They are common early on, before you know which nicotine level suits you. Frequent headaches after vaping usually point to too much nicotine in one go. A lower-strength juice is the first thing to try. The amount per session may also be fine while the daily total is too high, so if you vape often through the day, cut back on vape breaks and see whether it changes anything.
Dizziness or head rush
Dizziness typically turns up around the first month. The feeling resembles a first cigarette, when the body has not yet worked out how to process nicotine. It comes from the nicotine rather than from vaping as such, and high-strength juices make it more likely. It tends to fade as tolerance builds. If it does not, you are probably taking in too much nicotine at once, and the options are a lower-nicotine liquid or fewer sessions.
Summary
Most of this comes down to knowing what causes each effect: PG and VG pull water, warm vapor irritates the throat, and nicotine in excess brings headaches and dizziness. Water, a draw style that suits you, a lower nicotine strength and less frequent vaping are the adjustments covered above.
For related reading, see our posts on common vaping mistakes to avoid and on what your favorite vape flavor says about you.