can vaping make you sick

July 7, 2026

Can Vaping Make You Sick?

Why vaping sometimes causes nausea, headaches and dizziness and what to do about it.

Quick answer: Yes, vaping can cause nausea, dizziness and headaches, primarily from too much nicotine, using too high a strength, dehydration from PG, or vaping too rapidly without breaks. Most of these causes are easily addressed by adjusting your nicotine strength, slowing down or drinking more water.

Feeling unwell after vaping is common, particularly for new vapers or anyone who has pushed their nicotine intake too high. Understanding the most common causes helps you identify which applies and make a straightforward fix.

Most Common Causes and Fixes

Symptom	Most likely cause	Fix
Nausea	Nicotine strength too high; vaping too fast; empty stomach	Drop to a lower nicotine strength; pace sessions; eat before vaping
Dizziness or lightheadedness	Nicotine overdose (too much too quickly); hyperventilation from deep draws	Reduce nicotine strength; take smaller, slower draws; sit down and rest
Headaches	Dehydration from PG; high nicotine; nicotine withdrawal between sessions	Drink more water; lower nicotine; extend session intervals
Sore throat or coughing	PG sensitivity; too-high nicotine; incorrect technique	Try higher-VG liquid; lower nicotine; adjust to slower MTL draw
Heart racing	Nicotine stimulant effect; too much nicotine quickly	Reduce nicotine strength; allow 30 minutes between sessions
Dry mouth	PG draws moisture from oral tissues	Drink water throughout the day; try higher-VG liquids

The Nicotine Overdose Problem

The most common reason new vapers feel unwell is taking too much nicotine too quickly. Unlike a cigarette, which has a natural endpoint, a vape is available continuously. New vapers: particularly those who were light smokers: often underestimate how much nicotine they are absorbing and chain-vape in a way that delivers far more nicotine than their body is accustomed to.

Early signs of nicotine overdose include nausea, dizziness, headache, increased heart rate and sweating. If these appear, stop vaping, drink water and rest. Symptoms typically resolve within 20 to 30 minutes as nicotine levels fall.

How often each cause makes vapers feel unwell (approximate, relative)

Longer bar = more commonly the root cause of vaping-related illness.

Too high nicotine strength

Most common

Vaping too rapidly

Common

Dehydration from PG

Common

PG sensitivity

Less common

When to see a GP: If symptoms are severe, do not resolve within an hour of stopping vaping, or include chest pain, difficulty breathing, vomiting or extreme dizziness, seek medical attention. These may indicate a reaction that needs assessment rather than a simple nicotine adjustment.

Frequently Asked Questions

Nicotine is absorbed more quickly into the bloodstream when the stomach is empty, which can produce a stronger and faster effect than the same amount after eating. The spike in nicotine can cause nausea for the same reason that smoking on an empty stomach does for some people. Having a light meal or snack before a morning vaping session and staying well hydrated usually resolves this.

A few things can change over time. You may have gradually increased how much you vape without noticing: the total nicotine intake creeps up. Your coil may be burned or degraded, producing unpleasant compounds from overheated cotton. Some people develop a mild sensitivity to specific flavourings over time. Try replacing your coil or pod, switching flavours, and consciously reducing your frequency of use.

Yes, though it is relatively uncommon. Some people are sensitive to propylene glycol and experience throat irritation, nausea or headaches from high-PG liquids. Switching to a 70VG/30PG or max-VG formula typically resolves this entirely. PG sensitivity is more common in people with existing allergies or respiratory sensitivities.

It is possible but less common. Without nicotine, the main cause of nausea is removed. However, heavy vaping with any e-liquid can cause dry mouth, throat irritation and minor digestive discomfort in some people. If you feel unwell from nicotine-free vaping, the most likely culprit is the volume of vaping rather than the absence of nicotine, or a sensitivity to a specific flavouring compound.

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