Natural Vitality CALM® is the world's best-selling magnesium supplement — an effervescent magnesium drink mix that delivers highly bioavailable magnesium citrate in a delicious raspberry lemon flavour. Simply mix with water to create a calming, fizzing drink that supports stress relief, muscle relaxation, and restful sleep.

• Award-winning #1 selling magnesium supplement worldwide
• Highly bioavailable magnesium citrate in an effervescent drink mix
• Supports healthy stress response, muscle relaxation, and sleep quality
• Delicious raspberry lemon flavour — easy to take daily
• No artificial colours, flavours, or sweeteners
• 226g powder — approximately 30–60 servings depending on dose

Frequently Asked Questions

Why is magnesium important?

Magnesium is involved in over 300 enzymatic reactions in the body, including energy production, muscle and nerve function, blood sugar regulation, and protein synthesis. Modern diets are frequently low in magnesium, and deficiency is associated with muscle cramps, poor sleep, anxiety, fatigue, and stress intolerance.

Why is CALM® better than tablet magnesium?

CALM® uses magnesium citrate in an effervescent form, which has significantly better bioavailability than many tablet or capsule formats such as magnesium oxide. The fizzing reaction when mixed with water indicates the ionic magnesium is being released and made available for rapid absorption.

How much should I take?

Start with 1/2 teaspoon (about 1g) in warm water daily and gradually increase to 2 teaspoons (about 4g) as needed. Starting low and building up helps avoid loose stools, which can occur if too much is taken too quickly. Take in the evening for best sleep support.

Can I take CALM® if I'm pregnant or breastfeeding?

CALM® contains magnesium citrate which is generally considered safe during pregnancy and breastfeeding. However, always consult your healthcare provider before starting any supplement during pregnancy or while breastfeeding.