How Long Does It Take To Feel the Effects of Ginseng?

Canadian ginseng (Panax quinquefolius) is an herb that grows mainly in North America. People usually take Canadian ginseng by mouth for stress, to support the immune system, or to relax. Though don’t confuse it with Asian ginseng (Panax ginseng) or Siberian Ginseng (Eleutherococcus senticosus), as these are different plants with different effects.

The beneficial effects of taking a Canadian ginseng supplement can vary depending on several factors, including age, health, and lifestyle habits.

It is generally recommended to take any supplements for at least four to six weeks to start experiencing their positive effects. However, some individuals may notice improvements in energy levels, mental clarity, and overall wellness within a few days of starting a supplement regimen. It is important to follow the recommended dosage and consult with a healthcare provider before starting any new supplements.

Consistency and patience are key when incorporating Canadian ginseng into a daily routine to achieve optimal results.

When should you take ginseng?

Antioxidants are beneficial regardless of age or health status, but ginseng treatment may be especially beneficial to those suffering from stress, mental fuzziness, weak immune systems, or sexual dysfunction. It has also been effective for:

Stress and Anxiety

Science and tradition agree that Canadian ginseng appears to have a calming effect. Whatever your current stress level may be, this simple herb seems to stimulate GABA receptors (nerve cells that receive the chemical messages that help to inhibit or reduce nerve impulses) and induces a calming effect on brain function and the body.


Patients with type 2 diabetes who take three grams of Canadian ginseng by mouth before a meal may experience lower blood sugar levels following a meal.

Further research showed that high-dose extracts of Canadian ginseng reduced glycosylated hemoglobin (HbA1c) in patients with Type 2 diabetes for eight weeks while they were maintaining existing medication and a healthy diet.

Respiratory tract infections

During flu season, research suggests that taking a ginseng extract might prevent cold or flu symptoms in adults aged 18 to 65. An Ontario-grown ginseng trial evaluated its effectiveness in preventing acute respiratory illness in 198 elderly people in an institutional setting. Within 8–12 weeks of taking Canadian ginseng extract, there was an 89% lower relative risk of contracting an acute respiratory illness. Almost all of these seniors had received vaccinations (90%) and ginseng extract appeared to be a safe and complementary treatment.

Are there side effects?

Taken appropriately, Canadian ginseng is generally regarded as safe when taken by mouth. The American Botanical Council Clinical Guide to Herbs (2003) reports that there are no known contraindications or drug interactions for Canadian ginseng.

There have been no side effects associated with using dosages of 100-3,000 mg daily for up to 12 weeks. Single doses of up to 10 grams have also been used safely. Symptoms may include headache.

Buy Canadian Ginseng From Our Licensed Partners

Ontario Ginseng Growers Association is proud to promote qualified retailers and certified sellers displaying our “Running Root” seal on their products. By using the “Running Root” seal, retailers guarantee their products contain only 100% Canadian Ginseng (Panax quinquefolius) that is sourced from native Ontario soils. Click here to view our list of licensed partners.

At the Ontario Ginseng Growers Association (OGGA), we’re passionate about educating consumers about high-quality, North American ginseng. Visit our website to learn more about this amazing plant—including some recipe ideas for adding ginseng into your daily routine!—or reach out to learn more about how you can get involved.