What is Pravala?

Pravala is red coral (Latin: Corallium rubrum). Ayurveda uses it as a single drug. That means one substance on its own, not a mixed formula.

The coral is cleaned, processed and ground to a very fine powder or ash. It is then given in tiny doses.

It is used mainly as a calcium-rich remedy for bones and teeth. It is also given for burning stomach and acid reflux. And it is used for what Ayurveda calls excess "heat".

Other names are Red coral, Praval, Prabal and Marjan. Most of it is calcium carbonate. That is the same mineral found in chalk and in common antacid tablets.

Here is the evidence in one line. Pravala has a long, respected place in traditional practice. But there are almost no modern human trials.

Traditional use tells you that people have valued a substance for a long time. It is not proof that it works. That holds for everything said on this page.

How does Pravala work?

The most likely explanation is simple chemistry. It is not anything special to coral.

Pravala is mostly calcium carbonate. This neutralises stomach acid. It also supplies calcium that the body can take up.

That would explain the traditional use for heartburn. It would also explain the use for weak bones or teeth. A plain calcium antacid works in much the same way.

The idea is reasonable. But it has not been tested head-to-head in people.

Ayurvedic theory calls Pravala cooling. It is said to calm Pitta, the "heat and digestion" principle in Ayurveda. That is a traditional way to explain its use, not a measured body mechanism.

What forms does Pravala come in?

Pravala comes in three main forms, and they are not interchangeable. Doses are measured in milligrams. Kitchen measuring is not safe.

Pravala pishti is the gentlest form. The coral is ground and levigated (rubbed again and again) with rose water. It is then dried into a pale powder.

Pravala bhasma is the calcined (heated to ash) form. It is more concentrated. Heating is also the step where the risk of contamination rises.

Praval Panchamrit and similar named products are compound formulas. They mix Pravala with pearl, shell and other minerals. They are not the single drug described here.

You may also see capsules or tablets from commercial makers. Choose only products with a batch certificate. It should show testing for lead, mercury and arsenic.

Where it comes from:

Red coral has been used as medicine for well over a thousand years. Classical Ayurvedic texts of rasa shastra (mineral medicine) list it among the sea-derived drugs. Pearl and conch sit in the same group.

Its use is not limited to India. Coral appears as Marjan in Unani medicine. It is also used in Tibetan and Siddha practice.

European apothecaries (old-style pharmacists) listed it through the medieval and early modern period. That spread across several separate traditions is why its traditional standing is rated high. Its tested evidence is not.

What does Pravala help with?

• Heartburn and acid reflux: This is the use with the most likely basis. Calcium carbonate does neutralise stomach acid. That is well established for antacid products in general. No published trial has tested Pravala itself. It has not been compared with a placebo or with a standard antacid. Do you just want acid relief? A tested antacid gives you a known dose and no worry about contamination.
• Low dietary calcium: Pravala supplies calcium in a form the body can take up. As a calcium source, the chemistry is sound. But the usual traditional dose is 125 to 250 mg of powder. That gives only a small part of a day's calcium need. No human trial has measured whether Pravala raises calcium levels. None has shown that it improves any calcium-related outcome.
• Bone and tooth support: Tradition uses Pravala for weak bones, slow-healing fractures and dental problems. No human trial has tested it for bone density, fracture healing or dental health. Treat this as traditional practice only. Osteoporosis means thinning, fragile bones. If you have it, use treatments that have been tested.
• Burning feelings and "heat" conditions in Ayurveda: Practitioners give Pravala for burning in the palms and soles. They also give it for burning urination, skin heat and irritability. These are all grouped under excess Pitta. This is a traditional group, not a modern diagnosis. There is no trial evidence behind it. Burning when you pass urine can mean an infection. Get it checked by a doctor.
• Bleeding disorders in traditional use: Classical texts list Pravala for nosebleeds, heavy periods and blood-streaked cough. There is no human evidence that it affects bleeding in any way. Bleeding with no clear cause always needs a doctor first. Do not treat it yourself.

Which foods are rich in Pravala?

1. Milk, yoghurt and cheese: the everyday source of the same calcium
2. Tinned sardines and salmon with the bones in: calcium plus vitamin D
3. Sesame seeds and tahini: a plant source of calcium
4. Almonds: a modest calcium source
5. Leafy greens such as kale and pak choi: calcium your body absorbs well

What are the side effects of Pravala?

• Constipation
• Bloating, gas or burping
• Stomach upset or nausea
• Acid rebound: stomach acid comes back more strongly once the antacid effect wears off
• Too much calcium in the blood with high or long use, which brings thirst, tiredness, confusion and frequent urination
• Kidney stones with long or high use
• Poisoning from lead, mercury or arsenic in untested batches

Good to know:

At traditional doses, the common effects are mild gut ones. You would get the same from any calcium antacid. They usually settle when you stop.

The serious risks are not from the coral itself. They come from dose and purity.

Heavy-metal contamination of mineral-based Ayurvedic products is documented. Lead or mercury poisoning is slow and quiet. It can harm the brain, kidneys and blood.

Calcium also affects the heart and kidneys. So do not take this casually, and do not take it for years on end.

How much Pravala should you take?

• Recommended daily: There is no dose established by modern research. What follows is traditional practice, not a tested recommendation. Pravala pishti is usually given as 125 to 250 mg, once or twice a day. Pravala bhasma is more concentrated and usually given as 60 to 125 mg a day. These are milligram amounts that cannot be measured at home. Take this only in a pre-measured product or under an Ayurvedic practitioner who can tell you the exact form and amount.
• Best time of day: Traditionally taken in the morning, or twice daily morning and evening. For heartburn it is taken when symptoms appear.
• With or without food: Usually taken with milk, ghee or honey in traditional practice, which means with or just after food. Taking it with food also reduces stomach upset. Keep it at least two hours away from any prescription medicine.
• Time to effect: Not established by research. Any antacid effect would be felt within minutes, as with any calcium-based antacid. Traditional use for bone or "heat" complaints assumes weeks of daily use, which has never been measured.
• How long to take it: Traditional use is short — commonly a few weeks, not months. There is no safety data for long-term daily use. Stop and reassess after four weeks if nothing has changed. Long daily use of any calcium product raises the chance of too much calcium in the blood and of kidney stones.