aspirin + caffeine at a glance
Medicine class
Aspirin is an NSAID; caffeine is a stimulant and analgesic adjunct.
Usual role
Relief of pain and feverish cold or influenza symptoms.
Age restriction
Do not give to anyone under 16 unless specifically directed by a doctor. The selected products are not recommended for migraine in people under 18.
Extra caffeine
Limit additional caffeine to reduce restlessness, insomnia or palpitations.
What is aspirin + caffeine used for?
Selected UK products are licensed for symptom relief, not prevention of blood clots.
Headache, migraine, neuralgia, toothache, sore-throat pain and period pain
Muscular aches, rheumatic pain and other musculoskeletal symptoms
Feverishness and symptoms associated with colds or influenza
How does aspirin + caffeine work?
Aspirin reduces prostaglandins involved in pain, inflammation and fever, and also reduces platelet aggregation. Caffeine stimulates the central nervous system and supports pain relief, particularly for headaches.
How to take aspirin + caffeine
Take by mouth according to the specific pack instructions. Mix Beechams powder with a little water and stir before drinking; Anadin Original is an oral tablet. Taking aspirin with or after food may lessen stomach irritation. Avoid other aspirin-containing products and excessive additional caffeine.
Check other pain, cold and flu products for duplicate ingredients.
Ask a pharmacist if the formulation or instructions are unclear.
aspirin + caffeine side effects
Common or expected effects
- Indigestion, nausea or stomach discomfort
- Bruising or bleeding more easily
- Restlessness, nervousness, difficulty sleeping or dizziness
- Palpitations, particularly with additional caffeine
Get urgent medical advice
- Stomach or intestinal ulceration or bleeding
- Severe allergic reaction, wheezing or bronchospasm
- Marked or unexplained bleeding or bruising
- Kidney dysfunction or significant fluid retention
- Ringing in the ears or temporary hearing loss
aspirin + caffeine in pregnancy
This combination is not recommended during pregnancy unless a clinician considers it necessary. Aspirin for pain is particularly unsuitable from 20 weeks because it can affect fetal kidneys and amniotic fluid; third-trimester use is contraindicated. This differs from clinician-prescribed low-dose aspirin for specific pregnancy indications.
aspirin + caffeine while breastfeeding
Aspirin-containing pain products are not recommended while breastfeeding. Aspirin may affect infant clotting, while caffeine may cause irritability or poor sleep. Ask a healthcare professional about a more suitable painkiller.
aspirin + caffeine interactions
Check with a pharmacist or prescriber before use if taking regular medicines, especially those affecting bleeding, kidneys or blood pressure.
Other NSAIDs, including ibuprofen and naproxen
May increase gastrointestinal, bleeding and kidney adverse effects.
Anticoagulants, antiplatelets and thrombolytics
May increase bleeding risk.
Common questions about aspirin + caffeine
Answers are fully visible for fast scanning and source review.
Is this the same as low-dose aspirin?
No. These products treat pain and feverish symptoms; low-dose aspirin is used under clinical direction for antiplatelet or pregnancy-related indications.
Can children take it?
Do not give it to anyone under 16 unless a doctor specifically directs aspirin treatment. Aspirin has been associated with rare but serious Reye's syndrome in children, particularly around viral illness.
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.