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Osha (Ligusticum porteri)


The scientific name of Osha is Ligusticum porteri and it belongs to the parsley or umbelliferae. The herb is a perennial herb and as such, grows in the North America Rocky Mountains where the soil is moist and rich. The plant has compound toothed leaves which are glossy and with flowers that are greenish-yellow. The stalks are hollow as those of parsley and can grow to heights of two to three feet. The root of the Osha herb is hairy and the inside is yellow while the outside is brown. Osha (Ligusticum porteri) has several properties that make it an ideal herb and this includes stimulant, diuretic, carminative, expectorant, anti-inflammatory, anti-microbial, anesthetic, antibacterial and antiviral properties.


Medicinal Uses

There are several medicinal uses associated with use of Osha. For centuries, it has been used by indigenous people and currently, it is used for preparing infusions, tinctures or teas. It can be taken internally for the purpose of treating various conditions such as coughs, catarrh, bronchial pneumonia, flu, colds and other types of respiratory infections. Root preparations can also be used for the treatment of diarrhea, fever, hangover, rheumatism and sore throats. The medicinal uses also spread to external use and in this case, the root preparations are used for the treatment of pains, aches, digestive problems, skin infections and wounds. It is because of this medicinal uses that the use of Osha (Ligusticum porteri) has continued to rise over the years.



Dosage and Administration

 Dosage of Osha varies in accordance to a couple of factors such as the age of the user, their health and other factors. Current, there are no proven scientific studies to prove the use of the herb. While this is the case, it is important to note that not all natural products are safe and for this reason, you should be certain to follow dosages as recommended by your doctor or physician. Read labels before you proceed to use the herb. It can be administered in different forms such as infusion, tincture, powder or extract form.


Parts Used

The part that is commonly used because of its medicinal purposes is the root. The seeds and the oil from the plant can also be put to good use.



There are several benefits which have been linked to the use of Osha (Ligusticum porteri). Some of these benefits are as associated below.


  • It delivers numerous benefits through addressing respiratory complications. When you have an annoying cough, colds, acute influenza that is accompanied by dyspnea and coughing, Osha (Ligusticum porteri) comes in handy in ensuring that the conditions are effectively addressed. It is precisely for this reason that it is considered beneficial for addressing bronchial inflammations and painful sore throats.
  • It is effective for the purpose of offering relief from pain and what is more, because it triggers excessive sweating, this ensures that harmful toxins are eliminated from your body as well.
  • It is also essential for improving the reproductive system, lymphatic, integumentary, gastrointestinal and parasympathetic nervous systems.
  • The ability of the benefit to relieve problems associated with digestion is another aspect that makes it beneficial and what is more, it is also useful for the purpose of preventing pain that is associated with the start of ulcers.
  • The roots, seeds and oil of the herb can be used for the purpose of improve the function of the kidney and uterus.
  • It is an ideal choice for curing conditions such as headaches, tuberculosis, pneumonia, painful menstruation and retained placenta.


Side Effects    

Just like when taking other types of medications, it is important to exercise caution when using Osha (Ligusticum porteri). While there are no side effects which are associated with the use of the herb by adults, there are a couple of precautionary measures which need to be taken into consideration and some of these are as highlighted below.


  • Osha (Ligusticum porteri) is not safe for expectant women and this is because it can trigger menstruation this causing a miscarriage.
  • Breastfeeding women are not supposed to use the herb because it can cause some side effects in children though these have not been identified as yet.
  • It should not be taken for prolonged periods but rather, there should be a break after every one week or month in order to avoid side effects caused by prolonged use.

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