What Drink Has 300mg of Caffeine and is it Safe?

October 22, 2025 •

3 min read

According to the FDA, most healthy adults can safely consume up to 400mg of caffeine daily. However, many popular products, including multiple energy drinks, pack a significant punch, leading many to ask: what drink has 300mg of caffeine?

Quick Summary

This article examines beverages with approximately 300mg of caffeine, such as certain energy drink flavors and specialized coffees, detailing the products and considering the associated health implications.

Key Points

Powerful Options: Several energy drinks like Reign Total Body Fuel and Monster Java 300 pack 300mg of caffeine.
Potent Coffee: Specialized products like Death Wish Instant Coffee and large Starbucks cold brews can reach or exceed 300mg per serving.
Safety Guidelines: The FDA advises healthy adults to stay under 400mg of caffeine daily, making 300mg a significant, but often acceptable, intake.
Individual Tolerance: The effects of 300mg vary greatly depending on body size, genetics, and consumption habits.
Monitor Intake: Be mindful of your total daily caffeine consumption from all sources, not just one high-dose drink.
Health Risks: High doses can cause anxiety, jitters, restlessness, and increased heart rate, especially in sensitive individuals.
Check the Label: Always read product labels for the most accurate and up-to-date caffeine content.

The 300mg Caffeine Club: Top Contenders

When seeking a significant caffeine boost, several categories of beverages can deliver a powerful dose. It's important to remember that formulations can change, so always check the label for the most current information. The following products are known to contain, or be available in, a 300mg variant.

High-Powered Energy Drinks

Some energy drink brands specifically market products with elevated caffeine content. These are often designed for athletes, gym-goers, or those seeking an intense jolt of energy.

Reign Total Body Fuel: A well-known high-performance energy drink that consistently offers 300mg of natural caffeine per 16 fl oz can. It is formulated with additional ingredients like BCAAs and electrolytes.
Monster Java 300 Mocha: A specific flavor from the Monster Energy line that boasts 300mg of natural caffeine. This is a coffee-forward, supercharged drink rather than a standard energy blend.
Bang Energy: While some of its previous formulations were known for 300mg of caffeine, recent changes in some products have affected this. However, it remains a contender in the high-caffeine energy drink market.

Specialized and Strong Coffees

While a standard cup of coffee contains much less caffeine, specialized products and brewing methods can easily reach the 300mg threshold.

Death Wish Instant Coffee: Sold in packets, one serving of this intensely caffeinated instant coffee is listed as containing 300mg.
Venti Cold Brew (Starbucks): A venti (20 oz) cold brew from Starbucks can contain up to 310mg of caffeine, putting it firmly in this category.
Concentrated Cold Brew: A 16-ounce glass of concentrated cold brew coffee can range from 200-300mg of caffeine, depending on the specific product and preparation method.

A Detailed Comparison of High-Caffeine Drinks


Drink	Caffeine (approx)	Serving Size	Notes
Reign Total Body Fuel	300mg	16 fl oz	Contains natural caffeine, BCAAs, and electrolytes.
Monster Java 300 Mocha	300mg	15 fl oz	Coffee-based energy drink.
Death Wish Instant Coffee	300mg	1 packet (8–12 oz)	Extremely potent instant coffee.
Starbucks Venti Cold Brew	310mg	20 fl oz	Served iced, without additional customization.

Health Implications and Safety Considerations

While 300mg of caffeine is within the FDA's general daily guideline of 400mg for healthy adults, it is a significant dose that should be approached with caution. Consuming this amount, especially in a single sitting, can lead to various physiological responses. The Mayo Clinic notes that high caffeine intake can cause symptoms such as restlessness, insomnia, increased heart rate, and anxiety. These effects can be more pronounced in individuals who are sensitive to caffeine or have underlying health conditions.

Potential Risks of High Caffeine Intake

Cardiovascular Strain: A rapid increase in heart rate and blood pressure can put a strain on the cardiovascular system, which is a concern for individuals with heart conditions.
Nervous System Effects: Overconsumption can lead to jitters, restlessness, and anxiety, disrupting normal sleep patterns and affecting overall mental well-being.
Digestive Issues: For some, high caffeine levels can lead to stomach upset and nausea.
Dehydration: Caffeine is a mild diuretic, and in large amounts, it can contribute to dehydration, especially when combined with intense physical activity.

Who Should Be Cautious with 300mg Caffeine?

Several groups of people should exercise particular caution with high-caffeine products:

Pregnant or Breastfeeding Individuals: These groups are often advised to limit their daily caffeine intake to 200mg or less, as higher doses can pose risks.
People with Heart Conditions: Individuals with arrhythmias, high blood pressure, or other cardiovascular issues should consult a doctor before consuming high-caffeine drinks.
Those with Anxiety Disorders: The stimulating effects of caffeine can exacerbate anxiety symptoms and restlessness.
Individuals Taking Certain Medications: Caffeine can interact with various medications, including some psychiatric drugs and sedatives.
Those with Poor Caffeine Tolerance: Some people are more sensitive to caffeine's effects due to genetics or infrequent consumption and may experience strong side effects even from moderate doses.

Conclusion: Is 300mg for You?

Drinks with 300mg of caffeine are readily available, primarily in the energy drink market and among specialized coffee products. While technically within the daily safety limits for many healthy adults, this concentration represents a powerful stimulant. The decision to consume such a high dose should be based on an honest assessment of your personal tolerance, health status, and awareness of potential side effects. Always read product labels carefully and consider spacing out your caffeine intake throughout the day to mitigate risks. Consulting a healthcare professional is advisable, especially if you have pre-existing health conditions or are sensitive to caffeine.

For more detailed information on caffeine safety, you can visit the FDA Guidance on Caffeine.

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Frequently Asked Questions

For most healthy adults, 300mg is below the FDA's recommended 400mg daily limit. However, it is a large dose that can cause adverse side effects like anxiety or restlessness, especially if consumed quickly or by sensitive individuals.

Several brands offer products at or near this level, including Reign Total Body Fuel and Monster Java 300. It is important to note that caffeine content can vary by flavor and specific product formulation.

300mg is equivalent to roughly 2-3 standard cups of brewed coffee, but the concentration in a single can of a high-caffeine energy drink is much higher.

Yes, especially with concentrated brews or large servings. For instance, some extra-strong instant coffees or a large cold brew from a coffee shop can contain 300mg or more.

In some individuals, particularly those sensitive to caffeine, high doses can cause side effects such as anxiety, jitters, rapid heartbeat, restlessness, and insomnia.

For someone not accustomed to caffeine, 300mg is a very high starting dose. It is advisable to start with much lower amounts to assess your tolerance and avoid strong, adverse effects.

Yes, a Venti cold brew from Starbucks can contain around 310mg of caffeine. Adding espresso shots to other drinks can also increase the caffeine content significantly.