Goldenrod

Eases Inflammation and Pain
One of the most powerful benefits of goldenrod is its ability to reduce inflammation and pain. It's frequently infused into oil and used topically in salves and creams for sore muscles, injuries, arthritis, etc.
The anti-inflammatory effects of goldenrod have long been known by herbalists. A few clinical trials on Chilean goldenrod (Solidago chilensis) have confirmed that topical use can decrease pain. Another study compared a medicine made with goldenrod, aspen bark, and ash bark to common NSAIDs. They were found to be equally effective.
If you don't want to make your own infused oil, try goldenrod in this Muscle Mend salve where it's combined with other pain-relieving herbs.

Supports Bladder and Kidney Health
Goldenrod has a long history of use for the urinary system and bladder health. It's an astringent, which means it tones and tightens tissues, and an antiseptic, which means it fights certain infections. Both of these properties explain its regular use for urinary tract infections (UTIs).
Goldenrod also has diuretic properties. It can increase urine flow, which helps to flush out toxins, potentially preventing kidney stones from forming.

Relief for Congestion and Colds
Goldenrod can be supportive during a cold or the flu, especially when you're feeling congested. It helps to break up mucus in your lungs, allowing you to expel it and breathe better. It's also a mild diaphoretic that will support your body during a fever.
You can try drinking goldenrod tea to relieve a sore throat as well. Its anti-inflammatory and antiseptic properties are very soothing.

May Help Seasonal Allergies
Ironically, another of the benefits of goldenrod is helping with the seasonal allergies it's accused of causing. Because it's an astringent (drying) herb, goldenrod is most helpful for symptoms like runny nose, runny eyes, and sneezing.
You can take a goldenrod tincture regularly during the time you most often suffer from allergies. Some herbalists also recommend it for allergies to cats and other pets.

Healing for Skin
The Latin word for goldenrod, Solidago, comes from a word that means "to make whole." This likely refers to its ability to heal the skin. Native Americans once used it frequently for wounds, burns, and sores. They would use it as a poultice applied to damaged skin or as a skin wash.
Today, goldenrod isn't used for this purpose as much as other herbs like yarrow and plantain. However, some herbalists still use it for the skin in poultices or salves. It can even help with toothaches.

May Help Diarrhea
Goldenrod has been used as a remedy for diarrhea in the past. Its astringent, drying nature helps to tone tissues in the digestive tract. It likely also helps with inflammation caused by digestive upset and diarrhea.