How much Mg is in a disposable vape?

Vaping has become increasingly popular in recent years as an alternative to smoking cigarettes. Disposable vapes, also known as disposable e-cigarettes, are a type of vaping device that is meant to be used once and then thrown away. They are small, lightweight, and easy to use, making them appealing for beginner vapers or those who only vape occasionally.

One question that consumers may have about disposable vapes is how much magnesium (Mg) they contain. Magnesium is an essential mineral that plays many important roles in the body, such as regulating muscle and nerve function, supporting the immune system, and maintaining healthy bones and teeth. The recommended daily intake of magnesium for adults is 310-420 mg per day for men and 310-360 mg per day for women. Getting enough magnesium from foods and supplements helps prevent deficiency.

So how much Mg is contained in a typical disposable vape? Below we will look at the composition of vape juice and the magnesium content of its ingredients to estimate the Mg content.

The Composition of Vape Juice

Disposable vapes contain vape juice, also known as e-liquid or e-juice, which is vaporized and inhaled by the user. Though vape juice ingredients can vary between brands and flavors, most contain four main components:

– Propylene glycol (PG): a thinning agent that helps distribute flavor and provides a “throat hit.”

– Vegetable glycerin (VG): produces vapor clouds and carries flavor.

– Nicotine (optional): typically found in concentrations of 0-50 mg/mL.

– Food-grade flavorings: added to give vape juice a particular taste and aroma.

In addition to these basic components, vape juice may also contain trace amounts of metals like magnesium that are picked up from the other ingredients, containers, or manufacturing equipment used. Now let’s take a closer look at the potential magnesium content from each component.

Propylene Glycol

Propylene glycol (PG) is an organic compound derived from petroleum processing that is used in antifreeze, solvents, and food additives. In vape juice, PG makes up 20-50% of the typical formula.

Research on the trace metal content of pharmaceutical-grade PG has detected magnesium concentrations ranging from 0.039 mg/L to 4.51 mg/L. Assuming an average of around 2 mg/L of Mg and a 30 mL disposable vape containing 15 mL of PG, the estimated magnesium from PG would be:

(2 mg Mg/L) x (15 mL PG) = 30 μg (0.03 mg)

So the Mg contribution from propylene glycol is likely very minimal.

Vegetable Glycerin

Vegetable glycerin (VG) is a thick, odorless liquid produced from plant oils like coconut and palm. It composes about 50-80% of vape juice.

One analysis of high-purity VG found it contained 20 ppm or 20 mg/L of magnesium. With 30 mL of vape juice containing 20 mL VG, the estimated magnesium content would be:

(20 mg Mg/L) x (20 mL VG) = 400 μg (0.4 mg)

Thus vegetable glycerin may contribute slightly higher amounts of Mg compared to PG, but still quite low overall.


Many disposable vape products contain synthetic nicotine derived from tobacco plants. Typical concentrations range from 0-50 mg/mL of nicotine in vape juice.

Studies measuring metals in tobacco leaves have found magnesium concentrations of 800-2100 μg/g dry weight. Assuming 50 mg/mL nicotine derived from tobacco contains an average of 1500 μg/g Mg, then a 30 mL vape with 3 mg/mL (90 mg) nicotine would have around:

(1500 μg Mg/g) x (0.09 g nicotine) = 135 μg (0.135 mg) Mg

So nicotine may provide low to moderate levels of magnesium depending on the concentration in the vape juice. Higher nicotine e-liquids would contribute more magnesium.


The flavorings used in vape juice include natural and artificial flavor extracts as well as sweeteners like sucralose. The wide variety of flavors makes it difficult to estimate the magnesium content. However, food-grade flavorings are generally highly purified, so they likely only contribute trace amounts of magnesium to vape juice.

One study did find that certain dark-colored flavorings contained metals like lead and nickel at levels up to 5 μg/g. Though magnesium was not reported, this indicates the potential for flavorings to pick up small amounts of metals. Overall the contribution from flavoring is probably low but uncertain.

Total Estimated Magnesium Content

Based on typical concentrations of the major vape juice components and data on their metal contents, we can estimate the total magnesium provided in a 30 mL disposable vape:

– Propylene glycol: 0.03 mg
– Vegetable glycerin: 0.4 mg
– Nicotine (3 mg/mL): 0.135 mg
– Flavorings: Likely trace amounts

**Total: Around 0.6 mg of magnesium**

Given an adult RDA of 310-420 mg magnesium daily, a single disposable vape would provide only about 0.1-0.2% of the recommended magnesium intake.

Some key points:

– The magnesium content comes mostly from the base components PG and VG rather than the nicotine or flavors.

– Higher nicotine concentrations would increase the Mg amount.

– There is some variability depending on the purity of the ingredients and manufacturing processes.

– The estimate of 0.6 mg per vape is reasonably robust but not exact.

Overall, the magnesium supplied by a disposable vape is nutritionally negligible. Vaping should not be viewed as a meaningful source of this or likely any other minerals. The trace amounts absorbed via inhalation are very low compared to dietary intake.

Magnesium Inhalation from Vaping

While a disposable vape only provides trace magnesium, could inhaling the aerosol transmit meaningful amounts of magnesium internally?

Studies on this are limited, but the data so far indicates very minimal magnesium absorption:

– One study found serum magnesium levels were unchanged in smokers after an average 5 years of tobacco use. Inhaled magnesium oxide aerosols are mostly expelled, with just 0.2-2% deposited in the lungs.

– Another study measured lung magnesium levels in rats exposed to magnesium sulfate aerosols. Lung deposits were just 0.002-0.02% of the inhaled amounts.

– Modeling of magnesium retention after magnesium oxide inhalation in humans predicted only 0.001% would be absorbed systemically.

The mechanisms of lung defense – coughing, mucus trapping, macrophage clearance etc – likely prevent any substantial absorption of inhaled magnesium. While vaping can irritate airways and alter lung cell functioning, it does not appear to increase magnesium assimilation.

So despite trace amounts of magnesium in vape aerosols, very little actually gets transferred into the body. Diet remains the only meaningful source of magnesium.

Magnesium Deficiency and Vaping

Since vaping does not provide significant magnesium, could it potentially influence magnesium status by affecting absorption or excretion?

Some sources have proposed vaping may increase magnesium requirements due to increased losses. However, research has not clearly established any magnesium-wasting effect from e-cigarette use.

One study did find people with chronic obstructive pulmonary disease (COPD) tended to have lower magnesium levels with greater tobacco use. But this related to general malnutrition in COPD rather than direct magnesium losses from smoking.

Overall there is currently no strong evidence that vaping affects magnesium status. However, potential effects on magnesium homeostasis need more investigation as vaping products continue evolving.

In the absence of proven impacts on magnesium levels, vapers concerned about deficiency should focus on diet and supplementation as needed, not adjusting vape use.

Symptoms of magnesium deficiency include muscle cramps, fatigue, anxiety, nausea, and weakness. Mild deficiencies are common since magnesium is depleted by stress, medications, sweating, and modern diets low in magnesium-rich foods like nuts, seeds, legumes, whole grains and leafy greens.

Those experiencing deficiency symptoms should consult a doctor to check magnesium blood levels and rule out other conditions. Under medical guidance, magnesium citrate supplements can safely treat and prevent low magnesium.

Maximizing Magnesium Intake

To obtain adequate magnesium with or without vaping, the top dietary sources include:

Whole grains

– Oats, brown rice, quinoa, amaranth, and whole grain breads provide around 20% DV magnesium per serving.

Nuts and seeds

– Pumpkin, squash, and chia seeds, almonds, cashews, and brazil nuts are high in magnesium.

Beans, lentils, and soybeans

– Good vegetarian options with about 30% DV magnesium.

Leafy greens

– Spinach, Swiss chard, beet greens, and kale are magnesium-rich.

Milk and yogurt

– Dairy provides around 10-15% DV magnesium per serving.

Avocados and bananas

– Great fruit choices with 7-8% DV each.

Fatty fish

– Salmon, mackerel, tuna are good sources and have omega-3s.

Seeds and nuts

– Pumpkin, squash and chia seeds, almonds and cashews are magnesium-rich

Aim for at least 400 mg daily from foods. Supplements can fill any gaps but should not replace a balanced diet. Consider a multi-mineral rather than magnesium alone, which can cause diarrhea when taken in excess.

Those with kidney disease or taking certain medications should consult a doctor before supplementing magnesium. Testing magnesium blood levels yearly can help assess if intake is adequate.

Vaping does not appear to impact magnesium status, but a diet rich in magnesium is important for staying healthy with or without e-cigarette use. Prioritize magnesium-rich foods and don’t rely on vapes as a meaningful source of any vitamin or mineral.


In summary, the estimated magnesium content of a typical disposable vape is around 0.6 mg. This negligible amount provides only 0.1-0.2% of the recommended daily magnesium intake. While propylene glycol, vegetable glycerin and nicotine carry trace magnesium, the quantities absorbed via inhalation are likely very low. There is currently no strong evidence that vaping affects magnesium homeostasis or increases requirements. To prevent deficiency, it is important to consume adequate magnesium from dietary sources like whole grains, nuts, leafy greens, dairy and fatty fish. Vaping should not be considered a way to obtain magnesium. Those experiencing potential deficiency symptoms should pursue testing, diet improvements and supplementation under medical supervision, independent of any vape use.

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