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Yap Bioceuticals - Spray - 50 ml
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Caffeine
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Keratus Caffeine Shampoo is used for this medicine is used in the treatment of headache, migraine and added to a painkiller to help it work.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
Keratus Caffeine Shampoo contains Caffeine. It belongs to the Methylxanthine stimulant class of medicines.
Caffeine is added to a painkiller to help it start working sooner and work a little better. It is a mild stimulant and does not relieve pain by itself.
Clean and dry the affected area, then apply a thin layer and rub it in gently. Wash your hands before and after use, unless your hands are the area being treated. This is for use on the skin only — do not swallow it. Follow the dose and the duration written on your prescription.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
Apply it as soon as you remember. If it is nearly time for the next application, skip the missed one — applying extra does not make up for it.
An overdose of this medicine can cause a racing heart, tremor, vomiting and agitation. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Most side effects of Keratus Caffeine Shampoo are mild and settle as the body adjusts. Reported side effects include:
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
| Pregnancy | Use with caution in pregnancy. Your doctor will weigh the benefit to you against the risk to the baby. |
|---|---|
| Breastfeeding | Use with caution while breastfeeding; watch the baby for any unusual symptoms. |
| Alcohol | Alcohol may worsen the side effects of this medicine. Limit it. |
| Driving | Not expected to affect your ability to drive. |
| Kidney | Use with caution if you have kidney disease — your doctor may adjust the dose or monitor your kidney function. |
| Liver | Use with caution if you have liver disease — your doctor may adjust the dose or monitor your liver function. |
| Habit forming | No |
Count your tea, coffee and cola for the day — the caffeine in this medicine adds to them. Taken late in the day it can keep you awake. Painkillers with caffeine taken most days can themselves cause a daily headache. If you are reaching for them more than twice a week, see a doctor rather than taking more.
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for anyone with an uncontrolled heart rhythm problem, unless a doctor has said otherwise.
Tell your doctor if you take medicines for asthma, a heart rhythm problem, or an antibiotic of the ciprofloxacin family — caffeine lasts longer alongside some of them.
Store below 30°C, away from direct sunlight. Close the cap tightly after each use. Keep out of the reach of children.
Avoid taking it in the evening if it disturbs your sleep. Cutting down suddenly after taking it daily can itself cause a headache for a day or two.

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The information on Keratus Caffeine Shampoo is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.