What is Hai Ma?

Hai Ma is a dried seahorse. It is used as a single herb in Traditional Chinese Medicine, which means it is one substance on its own, not a fixed formula. Its plain English name is simply Seahorse.

TCM doctors treat it as a warming tonic. They use it for low sex drive, trouble getting an erection, long-term wheezing, tiredness, and a weak or sore lower back.

Here is the short verdict on proof. The traditional record is long, but human trial data is close to none. Long use in a tradition is not proof that a remedy works, and that point applies to this whole page, so we say it once here.

How does Hai Ma work?

The honest answer is that no one has shown how Hai Ma works in the human body.

In TCM theory, it is said to warm and lift "kidney yang". That is a traditional idea about the body's warmth, drive and sexual energy. It is not a body part you can see on a scan.

Lab and animal studies offer some clues. Extracts of seahorse have been reported to raise male hormone levels in rodents and to calm swelling in test tubes. Some extracts also slowed blood clotting in the lab.

None of this has been repeated in people. Treat every idea about how it works as unproven.

What forms does Hai Ma come in?

You may meet Hai Ma in these forms:

Whole dried seahorse, sold by the piece or by weight. It is usually roasted or toasted first, then ground.

Fine powder, taken by the spoonful in warm water or in capsules.

Soaked in rice wine or spirit to make a medicinal wine.

Added to a decoction, which is a herb soup boiled from several herbs together.

Built into ready-made Chinese patent pills sold for male sexual complaints.

Whole seahorse is sold under wildlife trade rules in most countries. Some products sold online are fake, mislabelled or contaminated.

Where it comes from:

Seahorse appears in Chinese medical writing from about the 8th century, in the Tang dynasty text Ben Cao Shi Yi. Li Shizhen listed it again in his Bencao Gangmu in 1596.

It has stayed a well-known tonic in China, Korea and parts of Southeast Asia. It was often kept for men's complaints and for slow, difficult childbirth.

Wild seahorses are now under pressure from fishing. Trade is limited by CITES, an international treaty that protects wild species.

What does Hai Ma help with?

• Trouble getting an erection and low sex drive (in men): This is the best-known traditional use, and it has no human trial support. Classical texts call Hai Ma a warming kidney tonic for men who feel cold, tired and low in drive. Rodent studies report a rise in male hormone levels after seahorse extract. Animal results often fail to repeat in people. If erections have changed recently, see a doctor first. The cause can be heart disease, diabetes or a medicine you take.
• Long-term wheezing and breathlessness: Tradition uses Hai Ma for long-standing wheeze that gets worse in cold weather. There is no human trial showing it helps asthma or COPD (a long-term lung disease). Never swap it for an inhaler or a prescribed lung medicine. Stopping those can be dangerous.
• Tiredness with a cold, weak, aching lower back and knees: TCM reads this pattern as weak kidney yang, and Hai Ma is one of the herbs given for it. No trial has tested it for tiredness or back pain. Lasting tiredness deserves a check for anaemia (low iron in the blood), thyroid problems and diabetes.
• Lumps, swellings and slow-healing sores: Older texts use Hai Ma, taken by mouth or applied on the skin, for hard swellings and stubborn sores. Evidence here is limited to old written records and a little lab work. Any new lump needs a doctor's opinion, not a herb.
• Trouble passing urine at night: Some traditional sources pair Hai Ma with other herbs for older men who wake often to pass urine. There is no clinical study of this use. Frequent night-time urination can mean an enlarged prostate, diabetes or a bladder infection, so get it checked.

Which foods are rich in Hai Ma?

1. Not found in everyday food: Hai Ma is a dried animal used as medicine, not a cooking ingredient

Practical Tips:

In some regions it is simmered into soups or chicken broth, but that is a medicinal dose, not a normal food.

What are the side effects of Hai Ma?

• Feeling hot, flushed or restless
• Dry mouth and thirst
• Trouble sleeping if taken late in the day
• Nausea or an upset stomach
• Allergic reaction, especially if you react to fish or shellfish
• Exposure to heavy metals such as mercury or cadmium from poorly sourced stock

Good to know:

Reported side effects are mostly mild and settle when you stop. There is no good safety data from trials, so the real rate is unknown.

The bigger worry is the product itself. Seahorse is costly, so fakes, substitutes and unlabelled additives turn up in the trade. Sea animals can also build up heavy metals, which harm the kidneys and nerves over time.

Stop and get help if you get a rash, swelling of the face or lips, or trouble breathing.

How much Hai Ma should you take?

• Recommended daily: There is no modern proven dose, because the human studies needed to set one have not been done. Classical and modern TCM texts give these amounts: Decoction (herb soup): 3 to 9 g of the dried seahorse per day, usually with other herbs. Powder taken straight: about 1 to 1.5 g, once or twice a day. Medicinal wine: made and dosed by the practitioner who prepares it. Buy only from a supplier who can show legal, tested stock, and take the dose your practitioner sets.
• Best time of day: Usually taken in the morning and early evening. Avoid a late-night dose, since some people feel warm or restless and sleep badly.
• With or without food: Take it with food or just after a meal. Food lowers the chance of an upset stomach.
• Time to effect: Unknown. Tradition suggests two to four weeks for tonic effects, but no study has measured this in people.
• How long to take it: Traditional use is short, usually a few weeks at a time inside a wider formula. Review it with your practitioner after four weeks. If nothing has changed by then, stop and look for another answer. Do not stay on it for months on your own.