Mulberry Leaf Tea Benefits: The Sugar Claim and How to Make It
Mulberry leaf tea (Shahtoot ke Patton ki Chai) is a mild, grassy herbal tea made from white mulberry leaves, and its famous claim, that it blunts the sugar spike after a starchy meal, has a real chemical basis but only small, short tests behind it in people. Of the mulberry leaf tea benefits sold online, that is the one worth discussing. It’s pleasant, cheap and easy to make at home. If you take diabetes medicine, though, it can add to the medicine’s effect, so read the safety part before you start.
At a glance
- Plant: white mulberry, Morus alba, the shahtoot tree common in Pakistan and north India.
- Taste: soft, green and a little like mild green tea, with no caffeine.
- The sugar idea: the leaves contain DNJ, a compound that slows starch digestion.
- Main risk: low sugar with diabetes medicine, plus gas and loose stools.
- Verdict: Depends: a nice tea, not a diabetes plan.
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What makes mulberry leaves special?
Mulberry leaves carry a compound called DNJ (1-deoxynojirimycin). It looks enough like sugar to jam the gut enzymes (alpha-glucosidases) that chop starch into glucose. Slower chopping means sugar from your roti or rice trickles into the blood instead of rushing in.
A prescription diabetes medicine, acarbose, works on the same enzymes. That’s why the claim isn’t silly. It also explains the side effects: undigested starch reaches the large gut, where bacteria ferment it into gas.
Did you know?
- Silkworms (Bombyx mori) eat almost nothing but white mulberry leaves. The entire silk industry, from China to Pakistan, depends on mulberry trees.
- DNJ is part of what lets silkworms thrive on a leaf that many other leaf-eating caterpillars avoid.
- Mulberry leaves have been brewed as a tea in Japan and Korea for a long time, where it’s sold as kuwa-cha in Japan.
What people say, what tradition says, and our honest take
What people say
“Drink shahtoot leaf tea and stop diabetes medicine.” “Lowers cholesterol and BP.” These spread fast on WhatsApp.
What tradition says
Chinese medicine has long used sang ye (mulberry leaf) for fevers, sore eyes and excess thirst, a symptom that old texts linked with what we now call diabetes. Unani hakeems prize shahtoot fruit and sharbat as cooling, for sore throats and summer heat. Leaves were mainly silkworm food and goat fodder in Punjab.
Our honest take
- Plausible, with some support: small, short human tests have found a smaller sugar rise after a starchy meal when mulberry leaf was taken with it. They’re small, the products used vary, and long-term effects on HbA1c aren’t settled.
- Unproven: weight loss, cholesterol and BP claims. Some lab hints, nothing you can count on.
- False and dangerous: that it replaces diabetes medicine. Never stop or change your medicine for a tea.
- Fair everyday use: a caffeine-free cup with a meal, if your doctor is fine with it and you watch your readings.
How to make mulberry leaf tea at home
Drying the leaves
- Pick young, tender, bright-green leaves from a white mulberry tree away from road dust and spraying. Spring leaves are best.
- Wash in cool water and shake dry. Look for the milky latex at the cut stalk; that’s normal.
- Spread in a single layer on a clean cloth in shade, with airflow, for 3 to 5 days until crisp. Or dry in an oven at its lowest setting (about 50 to 60 °C) with the door slightly open for 2 to 3 hours.
- Crush roughly by hand and store in an airtight jar, away from light, for up to 6 months.
Brewing a cup
- Heat 250 ml water until just off the boil, about 90 °C (rest it 1 minute after boiling).
- Add 1 heaped tsp (about 2 g) crushed dried leaves, or 4 to 5 fresh leaves, torn.
- Cover and steep for 5 minutes. Longer makes it grassier, not stronger in a useful way.
- Strain. Add a slice of ginger or a little lemon if you like. Skip sugar, which defeats the point.
People who drink it for the sugar idea usually have it with or just before a starchy meal, since that’s when DNJ has starch to slow. A cup or two a day is a normal tea habit.
Myth: the black shahtoot tree works just as well
Pakistan has several mulberry trees. The tea tradition and almost all the testing uses white mulberry (Morus alba), which has glossy, heart-shaped or lobed leaves, often on the same tree. Black mulberry (Morus nigra) leaves are rougher and hairier. Paper mulberry (Broussonetia papyrifera), the tree behind Islamabad’s spring allergy season, isn’t a true mulberry at all and isn’t used for tea. Our shahtoot fruit guide explains the white and black types, and the pollen calendar covers paper mulberry.
Myth: more tea means better sugar control
Drinking jugs of it doesn’t scale up the effect, but it does scale up the gas, bloating and loose stools. And with diabetes medicine on board, a stronger effect isn’t a good thing; it’s a low-sugar risk. Moderation and a meter matter more than quantity.
Buying mulberry leaf tea and powders
- Packaged tea bags should list “Morus alba leaf” and nothing else, unless blended with green tea, which adds caffeine.
- Avoid products promising to “reverse diabetes” or “replace insulin”. Herbal products sold for diabetes have been found to contain hidden prescription drugs, which is how people end up with dangerous lows.
- In Pakistan, look for a DRAP enlistment number on herbal products; you can check it on DRAP’s website.
- Concentrated powders and capsules are a different strength from a home cup. Their amount is set by the pack or a qualified practitioner, not by guesswork.
If you take diabetes medicine, especially insulin or sulfonylureas such as gliclazide or glimepiride, mulberry leaf can add to their effect and push sugar too low. Talk to your doctor first, and check your sugar more often in the first weeks. Shakiness, sweating, a racing heart, confusion or sudden hunger mean eat or drink something sugary now and check your meter. Don’t start, stop or change your medicine yourself. Skip it in pregnancy and breastfeeding, since there’s not enough safety data, and don’t give it to children. People with ongoing bowel trouble may find it worsens gas. Stop if you notice itching, rash or wheezing; mulberry can cause allergy, and the milky latex in fresh leaves can irritate skin. If you’re due for surgery, tell the team about any herbal tea you drink.
Know your numbers
A fasting sugar of 126 mg/dL or more, or an HbA1c of 6.5% or more, diagnoses diabetes. If yours are near those numbers, a tea is not the plan; diet, movement and a doctor are. For the risks of mixing home remedies with sugar medicine, see our guide on karela, jamun and hypos, and compare with guava leaves for sugar.
Browse more honest plant guides in Desi Remedies.
Mulberry leaf tea questions people ask
What is mulberry leaf tea good for?
It’s a mild, caffeine-free herbal tea. Its best-known use is to soften the sugar rise after starchy meals, which has a real chemical basis and some small human tests. Claims for weight loss, cholesterol and BP aren’t proven.
Does mulberry leaf tea lower blood sugar?
It may reduce the sugar spike after a starchy meal a little, by slowing starch digestion. It doesn’t replace medicine, and the evidence comes from small, short tests.
Shahtoot ke patte ki chai kaise banaye?
Steep 1 heaped tsp dried leaves, or 4 to 5 fresh torn leaves, in 250 ml water just off the boil. Cover for 5 minutes, strain and drink without sugar.
Can I drink mulberry leaf tea with metformin?
Ask your doctor first. On its own metformin rarely causes lows, but adding things that lower sugar still matters, and many people take metformin with other medicines that do cause lows.
What are the side effects of mulberry leaf tea?
Gas, bloating and loose stools are the most common. Low sugar is possible in people on diabetes medicine. Rarely, allergy or skin irritation from the latex.
When should I drink mulberry leaf tea?
With or just before a meal that has roti, rice or other starch, since that’s when it has something to act on. Drinking it on an empty stomach won’t do much for sugar.
Is mulberry leaf tea safe in pregnancy?
There isn’t enough safety data, so it’s best skipped during pregnancy and breastfeeding. Pregnancy diabetes needs your doctor’s plan.
Does mulberry leaf tea help weight loss?
Not in any reliable way. It has no calories and may soften sugar spikes, but weight comes down from overall eating and activity, not a tea.
Can I use leaves from any shahtoot tree?
White mulberry leaves are the traditional and tested ones. Black mulberry is a different species, and paper mulberry isn’t a true mulberry at all. Avoid trees near roads or sprayed fields.
Does mulberry leaf tea have caffeine?
No, pure mulberry leaf tea is caffeine-free. Blends with green tea do contain caffeine, so read the label.
How long does dried mulberry leaf last?
Up to about 6 months in an airtight jar away from light and moisture. If it smells musty or looks mouldy, throw it out.
Can children drink mulberry leaf tea?
It’s best not to give it to children. A child with signs of diabetes, like heavy thirst, frequent peeing and weight loss, needs a doctor urgently.
Does mulberry leaf tea help insulin resistance?
It has not been shown to reverse insulin resistance. It may soften the sugar rise after starchy meals. Weight loss, daily walking and fewer refined carbs do far more, alongside any medicine your doctor advises.