Table of Contents
- Understanding Inhalation Techniques
- E-Liquid Composition: PG vs. VG Ratios
- Nicotine Strength and Type
- The Role of Wattage and Temperature
- Coil Maintenance and "Dry Hits"
- Airflow Settings
- Dehydration and "Vapers Tongue"
- PG Sensitivity
- Battery Safety and Device Integrity
- Summary Checklist for a Smoother Vape
- Conclusion
- FAQ
Experiencing a persistent cough while using a vape pen is a common hurdle that many vapers face, particularly when they are first starting out. This sensation can be frustrating and might lead you to believe that the device is malfunctioning or that vaping simply isn't right for you. However, at Vapor Authority, we have found that coughing is typically not an issue with the person, but rather a misalignment between the equipment settings, the e-liquid choice, and the user's inhalation technique.
Understanding the mechanics of your device and how different ingredients interact with your throat is the first step toward a smoother experience. Most causes for coughing are easily adjustable once you identify whether the culprit is your wattage, your nicotine level, or the way you draw on the device. This guide will break down the most frequent causes of "vape cough" and provide practical, technical solutions to help you fine-tune your setup for maximum comfort.
Understanding Inhalation Techniques
The way you inhale plays a massive role in whether or not you experience irritation. Vaping is not identical to other forms of inhalation, and using the wrong technique for your specific hardware is one of the most common reasons people cough. There are two primary styles of inhalation: Mouth-to-Lung (MTL) and Direct-to-Lung (DL).
Warning: This content is intended for adults of legal vaping age only. Vaping products contain nicotine, which is an addictive chemical. These products are not intended for use by minors, non-smokers, pregnant or breastfeeding women, people with heart conditions, high blood pressure, or asthma. Consult a physician if you have concerns about whether vaping products are appropriate for you.
Mouth-to-Lung (MTL)
Mouth-to-lung vaping involves drawing the vapor into your mouth first, holding it for a brief moment, and then inhaling it into your lungs. This is the technique most commonly used with smaller pod system starter kits and starter kits. These devices usually have a tighter "draw," meaning there is more resistance when you pull. If you try to inhale directly into your lungs on a device designed for MTL, the concentrated vapor can hit the back of your throat too forcefully, triggering a cough.
Direct-to-Lung (DL)
Direct-to-lung vaping, also known as sub-ohm vaping, involves breathing the vapor straight into your lungs in one deep breath, much like taking a deep breath of air. Devices designed for DL vaping have wide-open airflow and use coils with low resistance (below 1.0 ohm). If you try to use an MTL technique (holding it in your mouth) on a high-powered box mod with a large tank, the vapor can become too hot and dense, leading to immediate throat irritation.
Matching your technique to your device is vital. If you are using a high-wattage box mod with a large tank, you should likely be using a DL draw. If you are using a compact pen or pod system, an MTL draw is usually the standard.
E-Liquid Composition: PG vs. VG Ratios
Every e-liquid is made primarily of two base ingredients: Propylene Glycol (PG) and Vegetable Glycerin (VG). The ratio of these two liquids determines the "feel" of the vapor. If your e-liquid has a ratio that doesn't match your device or your personal sensitivity, it can lead to significant coughing.
Propylene Glycol (PG) and Throat Hit
PG is a thinner liquid that is excellent at carrying flavor. It is also the ingredient responsible for "throat hit"—that slight tingling or rasping sensation in the back of the throat. While many vapers enjoy this sensation, an excessively high PG ratio (such as 70% PG / 30% VG) can be too harsh for some. If you find yourself coughing even with low nicotine, your e-liquid might have too much PG for your preference.
Vegetable Glycerin (VG) for Smoothness
VG is a much thicker, slightly sweet liquid derived from vegetable oils. It is responsible for producing large vapor clouds and providing a much smoother throat feel. If you find your current vape too "sharp" or irritating, switching to a "Max VG" or a 70% VG / 30% PG blend can significantly reduce the urge to cough. However, be aware that very thick VG liquids require sub-ohm tanks with large wicking ports; otherwise, the coil may not be able to soak up the liquid fast enough, leading to "dry hits."
At Vapor Authority, we ensure all our US-made e-liquids clearly state their PG/VG ratios so you can make an informed choice based on your hardware requirements and personal comfort.
Nicotine Strength and Type
The amount and type of nicotine in your e-liquid are perhaps the most significant factors in throat irritation. Nicotine is naturally alkaline, and higher concentrations provide a more aggressive throat hit.
Freebase Nicotine
Standard or "freebase" nicotine has been the industry standard for years. It is highly effective but becomes increasingly harsh as the concentration increases. For most people, freebase nicotine in strengths of 12mg or 18mg can be quite "peppery" and harsh on the throat, especially when used with modern, efficient devices. If you are using a high-strength freebase liquid and find yourself coughing, you may need to lower your nicotine level to 3mg or 6mg.
Nicotine Salts
Nicotine salts are a newer formulation where the nicotine is processed with an acid (usually benzoic acid) to lower its pH level. This makes the nicotine much smoother at higher concentrations. This is why pod systems can use 25mg or 50mg nicotine salts without causing the extreme irritation that a 50mg freebase liquid would. If you need a high nicotine concentration but can't stop coughing, switching from freebase to nicotine salt e-liquids is often the most effective solution.
The Role of Wattage and Temperature
If you are using a regulated box mod, the amount of power (wattage) you send to your coil directly impacts the temperature and density of the vapor. Every coil has a "sweet spot" range usually printed on the side of the coil head itself.
Overpowering the Coil
If your wattage is set too high for the resistance of your coil, the e-liquid will vaporize too quickly. This doesn't just make the vapor hot; it can also begin to singe the cotton wick. Even a slightly singed wick—often called a "restricted dry hit"—will release acrid fumes that are almost guaranteed to cause a coughing fit. Always start at the lowest recommended wattage for your coil and move up in 5-watt increments until you find a comfortable balance.
Temperature Control
Some advanced mods offer Temperature Control (TC) modes. This allows you to set a maximum temperature for your coil (using specific wire types like Nickel, Titanium, or Stainless Steel). TC mode is excellent for preventing coughs because it ensures the vapor never exceeds a specific heat threshold, regardless of how long you draw on the device.
Coil Maintenance and "Dry Hits"
The coil (or atomizer head) is the heart of your vape pen. It consists of a heating element and a wicking material (usually organic cotton). If the coil is not properly maintained, it will become the primary source of throat irritation.
Priming Your Coils
When you install a new coil, you must "prime" it. This means manually saturating the cotton with e-liquid and letting it sit for at least 5 to 10 minutes before firing the device. If you fire a dry or semi-dry coil, the cotton will burn instantly. Once cotton is burnt, that "burnt toast" flavor and the resulting cough will persist until the coil is replaced with replacement coils.
Coil Longevity
Coils are consumables. Over time, the e-liquid (especially sweet flavors) will "caramelize" on the heating element, forming a layer of carbon known as "coil gunk." This gunk prevents the coil from heating evenly and creates a harsh, unpleasant vapor. If you’ve been using the same coil for more than a week or two and notice you’re coughing more than usual, it’s likely time for a fresh one.
Airflow Settings
Airflow is an often-overlooked component of vapor comfort. Most modern tanks and pod systems feature an adjustable airflow control ring, and Air Flow Control Valves are a related accessory for tanks that use them.
- Open Airflow: Allows more air to mix with the vapor. This cools the vapor down and makes it less concentrated, which can help reduce coughing for direct-to-lung vapers.
- Restricted Airflow: Creates a warmer, more concentrated, and flavor-dense hit. While great for flavor, a restricted draw on a high-wattage setting can make the vapor too intense for some users' throats.
If you find yourself coughing, try opening your airflow completely to see if the cooler, airier hit is easier on your lungs.
Dehydration and "Vapers Tongue"
Both PG and VG are hygroscopic, meaning they naturally attract and absorb water. When you vape, the vapor can strip moisture from your mouth and the back of your throat. This dryness is a physical irritant that can lead to a "tickle" in the throat and subsequent coughing.
The solution here is simple: hydration. Increasing your water intake when you begin vaping is essential. Many vapers find that having a glass of water nearby and taking frequent sips helps keep the throat lubricated and significantly reduces irritation. Additionally, chronic dehydration can lead to "vapers tongue," where your taste buds become temporarily desensitized to flavors.
PG Sensitivity
While rare, some individuals have a genuine sensitivity or mild allergy to Propylene Glycol. Symptoms of PG sensitivity often include an uncomfortably sore throat, skin irritation, or excessive coughing that doesn't improve with lower nicotine or different inhalation techniques.
If you suspect you are sensitive to PG, you should try a "100% VG" or "Max VG" e-liquid. These liquids use Vegetable Glycerin as the sole base. Note that you will need hardware capable of wicking very thick liquids, such as a high-quality sub-ohm tank or a rebuildable atomizer (RDA/RTA).
Battery Safety and Device Integrity
While battery issues don't directly cause coughing, the health of your device ensures a consistent and predictable hit. At Vapor Authority, we prioritize battery safety to ensure your device functions within its intended parameters.
Battery Safety Tips
- Inspect Wraps: Always check your external MOD batteries (like 18650s) for any tears in the plastic wrap. A damaged wrap can cause a short circuit.
- Use Proper Chargers: Use a dedicated external battery chargers rather than the micro-USB/USB-C port on the mod when possible.
- Storage: Never carry loose batteries in your pocket or bag. Always use a plastic battery case.
- Matched Pairs: If your device uses two batteries, use a "married" pair—meaning they are the same brand, same age, and have been charged and discharged together.
A malfunctioning battery can lead to inconsistent power delivery, which might cause your coil to "spit" hot e-liquid into your mouth or produce an uneven, harsh hit.
Summary Checklist for a Smoother Vape
If you are struggling with a cough, work through this checklist in order:
- Check your nicotine level: If it's freebase nicotine above 6mg, try lowering it or switching to nicotine salts.
- Adjust your technique: Ensure you aren't trying to "MTL" a high-powered "DL" device.
- Inspect your coil: If it's more than two weeks old or tastes slightly burnt, replace it immediately.
- Check your wattage: Ensure you are within the recommended range printed on the coil.
- Increase your VG: Try an e-liquid with a 70/30 VG/PG ratio for a smoother feel.
- Drink more water: Keep your throat hydrated to prevent dryness-related irritation.
Conclusion
Coughing while vaping is almost always a sign that one of your variables—wattage, nicotine, e-liquid ratio, or technique—is out of sync. By taking a systematic approach to troubleshooting, you can transform a harsh experience into a smooth and enjoyable one. Whether it’s switching to a smoother nicotine salt or simply opening up your airflow, the solution is usually just a small adjustment away.
- Ensure your hardware and e-liquid are compatible (e.g., high VG for sub-ohm tanks).
- Maintain your coils and prime them properly to avoid acrid dry hits.
- Stay hydrated to counteract the natural drying effects of PG and VG.
- Always buy authentic products from trusted retailers to ensure ingredient quality.
If you’re looking for high-quality, US-made e-liquids or the latest authentic hardware to improve your experience, we invite you to browse our curated best sellers at Vapor Authority.
FAQ
Why does my new vape make me cough but my old one didn't?
Newer devices are often much more efficient and powerful than older models. If you are using the same high-nicotine e-liquid in a newer, more powerful device, you are likely receiving much more nicotine and vapor per puff, which can cause irritation. Try lowering your nicotine strength or reducing the wattage on your new device.
Can the flavor of e-liquid cause coughing?
Yes, certain flavor profiles are known to be "harsher" than others. Citrus, cinnamon, and some intense menthol flavors can provide a stronger throat hit that may trigger a cough in sensitive users. If you are having trouble, try switching to a smoother flavor profile like cream, custard, or vanilla.
What is a "dry hit" and why does it make me cough?
A dry hit occurs when the heating coil glows red-hot because there isn't enough e-liquid in the wick to vaporize. Instead of vaporizing liquid, the coil begins to burn the cotton wick itself. This produces a very harsh, acrid smoke that is highly irritating to the throat and lungs, causing an immediate cough.
Is it normal to cough when first switching to vaping?
Many people experience a brief adjustment period when they first start vaping. Vaping feels different on the throat than other forms of inhalation, and your body may need a few days to get used to the sensation of vapor. However, if the coughing is painful or persists for more than a few days, you should check your nicotine levels and PG/VG ratios.
