Calm-Z (Kanna Extract) - Zembrin®

  • Contains Zembrin®
  • Patented Kanna extract
  • Mood & stress
  • Natural tranquilizer & a clear mind
  • 60 capsules
Out of stock
EUR 40.25
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Calm-Z - Kanna extract with Zembrin® by Doctor's Best

Calm-Z with Zembrin® contains a patented extract of the plant species Sceletium tortuosum. Sceletium tortuosum is a succulent plant from the ice herb family native to South Africa. Also called Kanna, Channa or Chewable, the plant has been used for over 300 years by the San and Khoikhoi tribes, the oldest inhabitants of South Africa. The specific Sceletium tortuosum species from which Zembrin® is made is grown and cultivated in a joint project with the San people.

Patented South African brand Zembrin®

In 2009, the South African company Hg & H Pharmaceuticals Pty Ltd. obtained the first license to market and export the standardized extract of Sceletium tortuosum. The development of this specific extract under the brand name Zembrin® took over 10 years. The extract was ultimately created by a top team of international scientists and doctors. In the U.S. it enjoys GRAS (Generally Recognized As Safe) status, meaning it has been found safe as well as effective.


  • Patented Kanna extract Zembrin®
  • Does not contain gluten or soy; GMO-free
  • Suitable for vegans and vegetarians

Sceletium tortuosum and the nervous system

The Sceletium tortuosum plant contains alkaloids. Alkaloids are among active substances found in many plants. S. tortuosum contains four major alkaloids: mesembrine, mesembrenone, mesembrenol, and mesembranol. Mesembrine and mesembrenone primarily contribute to the efficacy of Doctor's Best’s Calm-Z.

Cautionary note

Not much is known yet about possible interactions of Sceletium tortuosum and prescription medications. Be careful when using SSRIs, MAOIs, benzodiazepines, and medications for cardiovascular disease.

About Doctor's Best

Doctor's Best was founded by a physician in 1990 because of his interest in the scientific basis of wholesome nutrition. The company produces over 200 high-quality nutritional supplements. All products are made from branded raw materials and are carefully tested during every step of the production process, from raw material to finished product. Production takes place on the strict basis of Current Good Manufacturing Practice Guidelines (cGMP). Doctor's Best works with nutrition scientists worldwide to find new, tested ingredients. This results in high-quality end products, developed according to the latest scientific insights.

Standardized brand products

In its products Doctor's Best almost exclusively uses proprietary and standardized brand materials of official trademarks that have been extensively researched. The authenticity of these ingredients is guaranteed in all products. Doctor's Best never uses alternatives. This results in a qualitatively superior line of supplements with very high bioavailability.

More Information
Product Name
Calm-Z (Kanna Extract) - Zembrin®
Doctors Best
60 capsules
User Instructions

Take 1 capsule once daily with or without food or as recommended by a healthcare practitioner. Daily dose should not exceed 25 mg. Warning: Consult your physician if you are pregnant, breastfeeding, or taking antidepressants or anxiety medications. Discontinue use 2 weeks before surgery.

Ingredients per Serving

25 mg Zembrin® (Sceletium tortuosum extract).

EU Norm
*RDA = Recommended Daily Allowance
Other Ingredients

Microcrystalline cellulose, hypromellose (vegetable capsule), silicon dioxide, magnesium stearate (vegetable source).

Vegan, Vegetarian
Storage: see label. Keep out of the reach of children. Consult an expert before use in case of pregnancy, breastfeeding, illness or medication.
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