Educational information, not medical advice — ask your doctor or midwife.
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Gul-e-Gaozaban is the dried purple flower of the plant Onosma bracteatum. It is used as a single drug in Persian and Unani medicine. Healers give it as a cooling drink for dry coughs, fevers, worry and poor sleep.
Most people meet it as a sweet syrup called sharbat, or as a warm tea. Shops also sell the loose dried flowers by weight. Another common name is Indian borage flower.
Here is the short verdict. Long use in a tradition is not the same as proof that a thing works, and we found no human trials of this flower. Take it as a comfort drink, not as a treatment for any illness.
One more point matters. Plants in the borage family can hold chemicals that harm the liver, so this flower is not a safe daily habit.
The honest answer is that no one has shown how it works in people.
Unani texts place it in a cooling group of drugs. They say it calms heat, soothes a raw throat and lifts low mood. In that system it is also a heart tonic, which means a drink thought to steady and cheer the heart.
A plain reason for the throat effect may be the slime in the flower. Soaked flowers give a thick, slippery liquid that coats a sore throat. Sugar in the syrup does much the same thing.
Any calming effect may simply come from a warm sweet drink at bedtime. That is a guess, not a finding.
You will find it in a few simple forms.
Sharbat, a thick sweet syrup, is the most common. Dried whole flowers are sold loose for tea. Some mixed Unani powders and cough blends also list it.
Quality varies a lot. The name gaozaban is used loosely, and borage or other look-alike plants are often sold in its place. Buy from a seller who names the Latin plant on the label.
Unani medicine grew out of Greek ideas, then spread through Persia into India. Old texts list gaozaban among heart and mood drugs.
Court doctors mixed it into cooling drinks for summer fevers. Home use for coughs and sleepless nights carried on the same way.
The syrup is still made and sold across India and Pakistan today.
See a doctor if your skin or the whites of your eyes turn yellow, if your urine turns dark, or if you have pain under your right ribs. These can be signs of liver trouble, and you should stop taking it straight away.
Also see a doctor if a cough lasts more than two weeks, if a fever stays above 38.5C for more than three days, or if you cough up blood.
Get urgent help for chest pain, trouble breathing, or a heartbeat that races and will not settle.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Gul-e-Gaozaban is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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