Ingredient

Anhydrous Caffeine

Anhydrous caffeine is a component that stimulates the central nervous system, reducing fatigue and providing a wakefulness effect.

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All medicines
396
Single ingredient
3
Combination
393
Prescription medication
8
OTC medication
388

MFDS ingredient code M223183

What does it do?

Anhydrous caffeine belongs to the class of central nervous system stimulants and is mainly used to alleviate headaches and aid in fatigue recovery. It also plays a role in enhancing the effects of antipyretics, analgesics, or antiemetics.

Anhydrous caffeine actively stimulates neural activity in the brain, reducing drowsiness and increasing concentration. This helps to alleviate the nerve signals that perceive pain and suppress the vomiting center to reduce vomiting.

Commonly used for

Approved uses differ by product. Check each product's information for its actual use.

Good to know

Unlike other central nervous system stimulants, anhydrous caffeine provides both wakefulness effects and analgesic auxiliary effects. It also has the characteristic of enhancing the effects of medications when added to antipyretics and analgesics.

Medicines containing this ingredient

Even with the same ingredient, strength, dosage form and how it is taken can differ.

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396 total

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Even with the same ingredient, dosage and approved uses can differ by strength, dosage form and combined ingredients. Check each product's information before taking it.

Combined ingredients

Ingredients used together with this ingredient in combination products.

Questions about this ingredient

  • QI drink coffee, so can I take a pain reliever that contains caffeine?

    Caffeine anhydrous stimulates the neural activity in the brain, so if you consume caffeinated beverages like coffee, your intake will increase. It is generally advisable to reduce caffeine consumption during medication use, and if you are sensitive to caffeine, consult your pharmacist before taking the medication.

    Answers 1 · 2026.09.14

  • QWhy is caffeine included in headache medications?

    Caffeine anhydrous is a central nervous system stimulant that is added to antipyretic and analgesic medications to enhance their effectiveness. It is also used for relieving headaches and recovering from fatigue, and it has a stimulating effect that reduces drowsiness and increases concentration.

    Answers 1 · 2026.09.14

For anything that needs medical judgment, consult a doctor or pharmacist.

SourceKorea Ministry of Food and Drug Safety (Drug Safety Korea)

This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.