🌺Thai Traditional Medicine

Roselle (Krajiab Daeng)

Hibiscus sabdariffa

About Roselle (Krajiab Daeng)

Roselle (Krajiab Daeng) (Hibiscus sabdariffa) is a herb used in the Thai Traditional Medicine tradition to help with High Blood Pressure, Cholesterol, Liver Support, and Weight Loss. The aerial parts and leaves are the parts traditionally used, taken internally.

Botanical background

Roselle (Sabdariffa gossypiifolia) is a species of flowering plant in the genus Sabdariffa that is native to Africa, most likely West Africa. In the 16th and early 17th centuries it was spread to Asia and the West Indies, where it has since become naturalized in many places. The stems are used for the production of bast fibre and the calyces are commonly steeped to make an infusion popular in many places around the world.

Source: Wikipedia, via iNaturalist

Parts used

Aerial Parts · internalLeaves · internal
🍵

Tea / Infusion

1–3 cups daily
  • Steep 1–2 tsp of dried Roselle (Krajiab Daeng) in freshly boiled water for 5–10 minutes.
  • Cover while steeping.
  • Strain and drink.
💧

Tincture

20–40 drops in water, 2–3× daily
  • Pack dried Roselle (Krajiab Daeng) into a jar and cover with 40–60% alcohol.
  • Seal and steep for 4–6 weeks, shaking daily.
  • Strain and store in a dark dropper bottle.
💊

Powder / Capsule

500 mg – 1 g, 1–3× daily
  • Grind dried Roselle (Krajiab Daeng) into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.

Pregnancy, Breastfeeding & Children

Pregnancy

Use Caution

Hibiscus tea has a traditional reputation for stimulating menstruation and is generally advised against in regular/concentrated amounts during pregnancy, particularly in the first trimester.

Breastfeeding

Likely Safe

Generally considered compatible with breastfeeding in normal tea amounts; limited formal safety data.

Children

Likely Safe

Commonly used as a mild, vitamin-C-rich tea for children in many cultures; no significant safety concerns at normal amounts.

Contraindications

  • Pre-surgery — discontinue at least 2 weeks prior (potential antiplatelet effect)
  • Active liver disease — monitor liver enzymes with long-term use

Warnings

⛔ Heart & Blood Pressure Medications

May interact with antihypertensive drugs, blood thinners, or cardiac medications. Do not combine without medical guidance.

⚠️ Liver Health

Some herbs used for liver conditions can be hepatotoxic at high doses. Have liver function monitored if using long-term.

⚠️ Allergic Reactions

Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.

⚠️ Not Medical Advice

This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.

Drug & herb interactions

Blood pressure medications

Additive blood-pressure-lowering effect.

Diabetes medications, hydrochlorothiazide

May enhance drug effects or alter clearance.

Where to find in nature

Native region

Thailand, Myanmar, Laos, Cambodia

Climate

Tropical monsoon

Habitat

Tropical forests, temple gardens, and village herb plots of Southeast Asia

🌿 To see Roselle (Krajiab Daeng) growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier — never consume a plant you are not 100% certain of.

Where to buy

In store

  • Thai and Southeast Asian grocery stores
  • Asian supermarkets with herbal and fresh produce sections
  • Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
  • Naturopathic clinics and integrative medicine practices
  • Specialist herbal apothecaries and herbalist practices

Online

iHerb

Wide selection of standardised extracts, capsules, and powders with lab testing

Mountain Rose Herbs

Premium bulk dried herbs — certified organic, ethically sourced

Starwest Botanicals

Large selection of certified organic bulk herbs and powders

Herb Pharm

High-quality liquid extracts and tinctures, rigorous quality standards

Amazon

Convenient — verify brand certifications and check third-party testing

Etsy

Small-batch artisan herbalists, hand-harvested and wildcrafted herbs

Quality tips

When buying Roselle (Krajiab Daeng), look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products — quality varies enormously.