Caffeine pills and sports supplements containing Caffeine Anhydrous are becoming as popular as ever but a lot of users are unaware of the full range of benefits, as well as the potential side effects.

What Is Caffeine Anhydrous?

Caffeine Anhydrous is derived from Caffeine, a natural substance found in a wide range of plants.

There’s a good chance you already have Caffeine in your everyday-life if you eat cacao or drink hot drinks like coffee and green tea. These all contain a relatively low amount of caffeine unless you need numerous cups of coffee to get through the day!

Caffeine Anhydrous comes in both pill and powder form, with caffeine pills being used to give an energy boost, whilst the powder form is regularly used in sports supplements to help improve athletic performance.

Your pre workout may also contain Dicaffeine Malate – this is caffeine combined with malic acid and it’s believed ti encourage a slower release of energy.

How Does Caffeine Anhydrous Work?

To understand how it works, you first need to understand what causes people to feel lethargic or lazy. Adenosine, a neurotransmitter, attaches itself to receptors in your brain, when it does this, it can slow you down and leave you feeling tired.

Caffeine Anhydrous works by imitating Adenosine and latching on to the receptors, this means that Adenosine can’t bind with the receptors so as a result, you stay alert and awake for longer.

Caffeine Anhydrous Uses

Caffeine Anhydrous Uses In Exercise

Caffeine is one of the most widely researched ingredients in the supplement industry with a large number of studies supporting its benefits for athletic performance.

As we’ve already mentioned, caffeine can help you to feel alert and awake which is very beneficial when it comes to a workout. It also has a nootropic effect, helping you to focus throughout your exercise. If you sometimes feel lethargic and struggling to focus on your reps at the gym, caffeine could give you a much needed boost.

It has also been proven to increase muscle strength and muscle power, another reason for its inclusion in so many pre workout formulas. 

Using Caffeine Safely

Everyone will have a different tolerance to caffeine and women naturally have a lower tolerance. 300mg-400mg is considered to be a safe daily amount but that doesn’t mean you won’t feel the side effects of caffeine if you have a low tolerance.

Pre workout supplements generally contain anywhere between 100mg and 400mg but there are some high stimulant pre workouts that go beyond 700mg. Regardless of the dosages, it’s advisable to “half scoop” to determine your tolerance.

If you are planning to use a pre workout that contains Caffeine Anhydrous, make sure you limit your caffeine intake throughout the day (no energy drinks/coffee) and be aware that if you’re working out in the evening, it can affect your quality of sleep.

Potential Side Effects

Whilst 300-400mg a day has been deemed safe, if your body has a low tolerance to caffeine you could feel some adverse effects. Here are some of the side effects you may feel:

  • Jitters
  • Headaches
  • Nausea
  • Upset stomach
  • Diarrhea
  • Anxiety

If you take too much caffeine to the point where you reach intoxication, then it could result in:

  • Rapid heartbeat
  • Chest pain
  • Seizures
  • Vomiting
  • Disorientation
  • Death


Given the sheer amount of studies supporting the benefits of Caffeine Anhydrous, we’d advise that you incorporate it in to your workout days. Make sure you follow the manufacturers guidelines and test your tolerance before you go for a full scoop.

The key to caffeine is knowing your limits and for some there’s a fine line between feeling energised and getting the jitters. If you do feel any side effects it’s probably best to end your workout and consult a doctor before supplementing caffeine again.