Jamu Kunyit Asam (Turmeric-Tamarind Tonic)

Safety

• This is a traditional drink, not a treatment. Period pain that is severe, getting worse, new after about age 25, or comes with heavy bleeding or pain between periods needs a clinician’s assessment, not a home tonic.
• Concentrated turmeric supplements have been linked to rare liver injury, typically after one to four months of daily use, and usually clearing when the supplement is stopped. A cup of this drink supplies far less curcumin than a capsule, but it is a strong brew, so keep to one cup a day. Stop and see a clinician if your urine darkens, you have abdominal pain, or your skin or eyes turn yellow, and skip it if you have liver disease. Some of the reported cases involved supplements that also contained black-pepper extract, which raises curcumin absorption, so leave out the optional pepper if you have a liver condition or take regular medicines.
• Turmeric can add to the effect of blood thinners and diabetes medicines, and it can stimulate the gallbladder, so avoid it if you have gallstones or a blocked bile duct. It may also reduce iron absorption, so if your iron is low, drink it between meals rather than with them.
• Turmeric is high in oxalate, and most of it (about 91% in one analysis) dissolves in water, so it ends up in a simmered drink. In a small crossover trial of 11 healthy adults, turmeric (but not cinnamon) raised urinary oxalate. If you form calcium-oxalate kidney stones, skip this drink.
• Tamarind is mildly laxative in large amounts and is acidic, so rinse your mouth with water afterward. It may change how some medicines are absorbed, so keep a couple of hours between this drink and your medicines.
• This is far more turmeric than cooking uses. Its safety in pregnancy and breastfeeding is not established, so avoid it unless your clinician agrees. Children’s safety has not been studied either.
• Make it yourself from fresh roots. Bottled jamu sold for pain, slimming or stamina has been found to contain undeclared prescription drugs, such as the weight-loss drug sibutramine, that can cause serious harm. If you use ground turmeric instead, buy a brand that tests for heavy metals: a 2024 survey of turmeric sold in four South Asian countries found lead above 2 μg/g in 14% of 356 samples, with the highest levels pointing to lead chromate pigment added as a colorant. If you add honey, never give it to babies under 12 months.