Ginger Root

Medically reviewed by Prof. Giorgi Pkhakadze, MD, MPH, PhD — GMJ Editorial Board

What is Ginger Root?

Ginger root (Zingiber officinale) is a flowering plant native to Southeast Asia that belongs to the Zingiberaceae family. The underground rhizome, commonly called ginger root, has been used for thousands of years both as a culinary spice and traditional medicine. This knobby, beige-colored root contains numerous bioactive compounds, most notably gingerols and shogaols, which are responsible for its characteristic spicy flavor and therapeutic properties.

Ginger root is available as a dietary supplement in various forms including dried powder, extracts, capsules, and teas. As an herbal extract, ginger supplements are typically standardized to contain specific concentrations of active compounds, particularly gingerols, to ensure consistent potency and effects.

Health benefits & uses

Nausea and vomiting (Strong evidence): Multiple clinical trials demonstrate ginger’s effectiveness in reducing nausea and vomiting associated with pregnancy, chemotherapy, and motion sickness. Studies show it can reduce pregnancy-related nausea by up to 75% when used appropriately.

Submit Your Paper

Anti-inflammatory effects (Moderate evidence): Research indicates ginger may help reduce inflammatory markers and provide relief from conditions like osteoarthritis. Some studies suggest regular ginger consumption can decrease joint pain and stiffness, though effects may take several weeks to manifest.

Digestive support (Moderate evidence): Ginger has traditionally been used to support digestive health, and some research suggests it may help accelerate gastric emptying and reduce symptoms of functional dyspepsia.

Pain management (Limited evidence): Preliminary studies suggest ginger may help reduce muscle pain and menstrual pain, but more research is needed to establish definitive benefits for pain management.

How it works

Ginger’s therapeutic effects are primarily attributed to its bioactive compounds, particularly 6-gingerol, 8-gingerol, and 6-shogaol. These compounds work through several mechanisms:

For nausea relief, gingerols interact with serotonin receptors (5-HT3) in the digestive tract and central nervous system, helping to regulate the nausea response. They also influence gastric motility by affecting the enteric nervous system.

The anti-inflammatory effects occur through inhibition of cyclooxygenase and lipoxygenase enzymes, which are involved in inflammatory processes. Ginger compounds also suppress nuclear factor-kappa B (NF-κB), a key regulator of inflammatory gene expression.

For digestive support, ginger stimulates digestive enzymes and enhances gastric contractions, promoting more efficient food processing and stomach emptying.

Dosage

Typical adult dosing varies by intended use and form of ginger. There is no established Recommended Dietary Allowance (RDA) or Tolerable Upper Intake Level (UL) for ginger root as it is classified as an herbal supplement rather than an essential nutrient.

General supplementation: 250-1000 mg daily of standardized extract

Nausea/motion sickness: 250-1000 mg taken 30-60 minutes before travel or as symptoms arise

Pregnancy-related nausea: 250 mg four times daily (1000 mg total), under healthcare provider supervision

Anti-inflammatory support: 500-1000 mg daily, divided into 2-3 doses

Always consult with a healthcare provider before starting ginger supplementation, especially for therapeutic purposes or if you have underlying health conditions.

Food sources

Fresh ginger root is the primary natural source and can be found in most grocery stores year-round. One inch of fresh ginger root contains approximately 250-400 mg of active compounds, though concentrations vary.

Other food sources include:

• Dried ground ginger (used as a spice)
• Crystallized or candied ginger
• Ginger tea (fresh or dried)
• Pickled ginger (often served with sushi)
• Ginger-containing foods and beverages

While these food sources provide some ginger compounds, supplements typically offer more concentrated and standardized amounts for therapeutic purposes.

Safety & side effects

Ginger is generally recognized as safe (GRAS) by the FDA when consumed in typical food amounts. Most people tolerate ginger supplements well, but some may experience mild side effects including:

• Heartburn or stomach upset
• Diarrhea
• Mouth irritation
• Drowsiness (rare)

These effects are typically mild and dose-dependent. Taking ginger with food can help minimize gastrointestinal irritation.

Interactions

Medications: Ginger may enhance the effects of anticoagulant drugs like warfarin, potentially increasing bleeding risk. It may also interact with diabetes medications by further lowering blood sugar levels. Some evidence suggests ginger might affect blood pressure medications.

Supplements: Ginger may enhance the blood-thinning effects of supplements like garlic, ginkgo biloba, and high-dose vitamin E. The combination could theoretically increase bleeding risk, though clinical significance is unclear.

Always inform your healthcare provider about all supplements you’re taking, especially before surgery or if you’re on prescription medications.

Who should be cautious

Certain individuals should exercise caution or avoid ginger supplements:

• People with bleeding disorders or taking blood-thinning medications
• Individuals scheduled for surgery (discontinue at least 2 weeks prior)
• Those with gallstones (ginger may increase bile production)
• People with severe heart conditions (consult healthcare provider first)
• Pregnant women (should only use under medical supervision)

Frequently asked questions

Is ginger safe during pregnancy?

Ginger is generally considered safe for pregnancy-related nausea when used appropriately and under healthcare supervision. However, pregnant women should not exceed 1000 mg daily and should consult their healthcare provider before use.

Can I take ginger supplements with other medications?

Ginger may interact with certain medications, particularly blood thinners and diabetes drugs. Always consult your healthcare provider before combining ginger supplements with prescription medications.

How long does it take for ginger to work?

For nausea relief, ginger typically works within 30-60 minutes. For anti-inflammatory effects, benefits may take several weeks of consistent use to become apparent.

What’s the difference between fresh ginger and ginger supplements?

Supplements provide standardized, concentrated amounts of active compounds and are more convenient for therapeutic dosing. Fresh ginger offers additional nutrients but in lower, more variable concentrations.

Can children take ginger supplements?

While ginger is generally safe in food amounts for children, supplement use in pediatric populations should only occur under healthcare provider guidance, as appropriate dosing and safety data are limited.