Caffeine vs Theacrine: Which to Choose and for Whom

Caffeine or theacrine - the choice depends on what you expect: performance at the start, lasting alertness, or freedom from tolerance. The editorial team examined typical situations and explained which substance is appropriate for whom, and where it is better to do without stimulants.

How to approach the choice

When a person chooses between caffeine and theacrine, they usually want one of three things: to improve performance in training, to stay alert longer without a "crash," or to get rid of caffeine tolerance. For each of these goals the answer is different, so the editorial team suggests first honestly defining exactly what you need.

If the goal is athletic performance, the criterion should be the evidence. Here caffeine is beyond competition: its ergogenic effect is confirmed for endurance, strength work, sprints, team sports and even cognitive tasks in sport.

If the goal is lasting alertness throughout the working day or the problem of tolerance, theacrine may become the subject of a cautious experiment. But it is important to understand that you are testing a substance with a small evidence base.

Below is our assessment by practical criteria and a breakdown of typical profiles.

Who is better off choosing caffeine

Endurance athletes.Running, cycling, swimming, skiing - here caffeine has the best data. The 2021 ISSN position points to the effectiveness of doses of 3-6 mg per kilogram of body weight taken about 60 minutes before exercise. For a person weighing 70 kg this is about 210-420 mg.

Strength and speed-strength athletes.Meta-analyses record a small but stable increase in maximal strength and muscle endurance. For many this is enough for caffeine to be a basic component of the pre-workout ritual.

Those counting their money.Caffeine is one of the cheapest supplements; it is easily obtained from coffee, tablets or gels. Theacrine in complexes costs significantly more per dose.

Athletes who undergo doping control.Caffeine is not banned and has a clearly defined status. The status of theacrine in the Prohibited List is not directly spelled out, so for tested athletes the simpler and more transparent choice is caffeine from a certified source.

• Lower doses (about 2-3 mg/kg) often give almost the same effect with less risk of side reactions.
• Doses above 9 mg/kg give no additional benefit but sharply increase side effects.
• Avoid concentrated powders of pure caffeine.

Who can consider theacrine

People with high daily caffeine intake.If you drink a lot of coffee and feel that it has "stopped working," theacrine could theoretically be an alternative thanks to its claimed absence of tolerance. However, it is more rational first to gradually reduce caffeine intake in order to restore sensitivity.

Those who need lasting mental activity.The slower elimination of theacrine makes it interesting for a long working day. But this same feature is a drawback for evening workouts if you care about sleep.

Those who want a combined effect.Manufacturers often combine caffeine with theacrine to get a fast start and a longer action. He's 2017 study showed that caffeine raises the blood level of theacrine, so the combination is not pharmacologically neutral.

Taylor's 2016 safety study used 200 and 300 mg of theacrine per day for 8 weeks. These are doses for which there are at least minimal data; there are no grounds to exceed them.

Comparison for typical situations

To make the choice clear, we brought the scenarios together in a table with editorial comments.

A separate note on sleep. Even if you feel no stimulation, caffeine taken 6 hours before sleep can worsen its quality. For theacrine, with its slower elimination, it is logical to expect an even longer effect, although there are few direct sleep studies.

For people with genetically slow caffeine metabolism (variants of the CYP1A2 gene), the effects may last longer, and in some studies their response to caffeine was weaker or even negative. If coffee "keeps" you up until night, that is a reason to be more cautious with any stimulants.

Women who take combined oral contraceptives should know that these slow the elimination of caffeine. During pregnancy EFSA recommends limiting caffeine to 200 mg per day, and it is better not to take theacrine at all because of the lack of data.

Common mistakes

The first mistake is to think that "caffeine without tolerance" means "caffeine without risks." Theacrine is a biologically active substance about which we know less than about caffeine, and the long-term consequences of taking it have not been studied.

The second is not counting total caffeine. A pre-workout complex, an energy drink and two cups of coffee can together give a dose far above 400 mg. This is a typical road to tachycardia, anxiety and insomnia.

The third is trying a stimulant for the first time on competition day. The response to caffeine, and even more so to theacrine, is individual, so any regimen should be worked out in training.

The fourth is ignoring the product's composition. "Proprietary blends" often do not disclose the amount of each ingredient. Choose products with precisely stated doses and independent certification.

Editorial conclusions

For athletic performance the editorial team unequivocally recommends caffeine: it is cheap, predictable and has one of the strongest evidence bases among supplements.

Theacrine is a niche option for those who want to experiment with lasting alertness or are looking for an alternative in the face of caffeine tolerance. But its evidence base is so far limited to isolated studies.

Whatever the choice, it is important to control the total daily dose of stimulants, take sleep into account and clear intake with a doctor if you have cardiac or anxiety disorders.

We also recommend our materials on caffeine and the athlete's sleep, on unloading from caffeine before competitions, and on the safe use of energy drinks.

References

1. Guest NS, VanDusseldorp TA, Nelson MT, et al. International society of sports nutrition position stand: caffeine and exercise performance. J Int Soc Sports Nutr. 2021;18(1):1.
2. Grgic J, Grgic I, Pickering C, et al. Wake up and smell the coffee: caffeine supplementation and exercise performance — an umbrella review of 21 published meta-analyses. Br J Sports Med. 2020;54(11):681–688.
3. Taylor L, Mumford P, Roberts M, et al. Safety of TeaCrine®, a non-habituating, naturally-occurring purine alkaloid over eight weeks of continuous use. J Int Soc Sports Nutr. 2016;13:2.
4. He H, Ma D, Crone LB, et al. Assessment of the drug–drug interaction potential between theacrine and caffeine in humans. J Caffeine Res. 2017;7(3):95–102.
5. EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA). Scientific Opinion on the safety of caffeine. EFSA Journal. 2015;13(5):4102.
6. Arnaud MJ. Pharmacokinetics and metabolism of natural methylxanthines in animal and man. Handb Exp Pharmacol. 2011;(200):33–91.