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MegaMag® Calmeze (Raspberry), 270 g

£36.54 for 270 g at Healf. It carries more than one active ingredient, so it is not ranked against single-ingredient products. Each price below counts one ingredient only.

What it really costs, per 100 mg magnesium61pOne 100 mg dose is our comparison unit for magnesium. It is not a recommendation.
A day61p
A week£4.26
A month£18.27
A year£222.29

At one 100 mg dose a day, this pack lasts 2 months. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Magnesium

  • Servings: 270 ÷ 9 per serving = 30
  • In the pack: 30 × 200 mg = 6 g
  • £36.54 ÷ 6 g × 100 mg = 60.9p per 100 mg magnesium
  • A week 60.9p × 7 = £4.26 · a month × 30 = £18.27 · a year × 365 = £222.29
  • Amount per serving: stated on the label.

L-Theanine

  • Servings: 270 ÷ 9 per serving = 30
  • In the pack: 30 × 100 mg = 3 g
  • £36.54 ÷ 3 g × 200 mg = £2.44 per 200 mg
  • A week £2.44 × 7 = £17.05 · a month × 30 = £73.08 · a year × 365 = £889.14
  • Amount per serving: stated on the label.

Vitamin B6

  • Servings: 270 ÷ 9 per serving = 30
  • In the pack: 30 × 25 mg = 750 mg
  • £36.54 ÷ 750 mg × 50 mg = £2.44 per 50 mg
  • A week £2.44 × 7 = £17.05 · a month × 30 = £73.08 · a year × 365 = £889.14
  • Amount per serving: stated on the label.

The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.

How it compares: magnesium bisglycinate

All 66, ranked →
Magnesium Bisglycinate 1500mgCheapest per 100 mg magnesiumSimply Supplements · 1.5 g a serving · 43p a month · a pack lasts 2.5 years1p£12.99View at Simply Supplements (opens in a new tab)
One NutritionPure Magnesium BisglycinateVitamin Planet · 700 mg a serving · 96p a month · a pack lasts 1.7 years3p£20.24View at Vitamin Planet (opens in a new tab)
ZipVitMagnesium Glycinate 2000mgZipVit · 400 mg a serving · £1.00 a month · a pack lasts 2 years3p£23.99View at ZipVit (opens in a new tab)
This productHealf · 200 mg a serving · £18.27 a month · a pack lasts 2 months61pshown above

Ranked purely by price per 100 mg magnesium. Labels here do not all state the same thing: this one gives stated on the label, the cheapest gives estimated from the compound weight using our conversion factor. Check both before choosing. 86 combination products also contain magnesium.

How it compares: L-theanine

All 12, ranked →
L-TheanineCheapest per 200 mgHealf · 200 mg a serving · £4.12 a month · a pack lasts 4 months14p£16.49View at Healf (opens in a new tab)
L-TheanineHealf · 250 mg a serving · £5.60 a month · a pack lasts 2 months19p£13.99View at Healf (opens in a new tab)
L-TheanineW-Wellness · 250 mg a serving · £6.20 a month · a pack lasts 2 months21p£15.49View at W-Wellness (opens in a new tab)
This productHealf · 100 mg a serving · £73.08 a month · a pack lasts 15 days£2.44shown above

Ranked purely by price per 200 mg. 70 combination products also contain L-Theanine.

How it compares: vitamin B6 P-5-P

All 4, ranked →
P5P 50Cheapest per 50 mgHealf · 50 mg a serving · £8.55 a month · a pack lasts 6 months28p£51.30View at Healf (opens in a new tab)
P5P 50Healf · 50 mg a serving · £9.00 a month · a pack lasts 2 months30p£18.00View at Healf (opens in a new tab)
Pyridoxal 5'-PhosphateHealf · 33.8 mg a serving · £11.26 a month · a pack lasts 4 months38p£45.69View at Healf (opens in a new tab)
This productHealf · 25 mg a serving · £73.08 a month · a pack lasts 15 days£2.44shown above

Ranked purely by price per 50 mg. 158 combination products also contain vitamin B6.

On the label

Magnesium · Bisglycinate (glycinate)
200 mg per serving (stated on the label)
L-Theanine · L-theanine
100 mg per serving (stated on the label)
Pack
270 g · 30 servings · 9 g a serving
Cost per serving
£1.22 (30 servings in the pack)
More label details
Vitamin B6 · P-5-P (active form)
25 mg per serving (stated on the label)
Claimed on the listing
vegan, vegetarian
Sold by
Healf
What the listing says
“270 g (30 servings)” · “Calmeze (Raspberry) - 30 servings” · “Mix 1 scoop (9 g)” · “L-Theanine ; 100 mg”
Ingredients

Bulking Agent: Calcium Carbonate, Magnesium Bisglycinate, Stabiliser: Microcrystalline Cellulose, L-Tryptophan, Milk Protein Hydrolysate, L-Theanine, Hops Extract, Anti-Caking Agents: Stearic Acid, Silicon Dioxide, Magnesium Salts Of Fatty Acids; Pyridoxal-5-Phosphate, Lemon Balm Extract, Emulsifier: Sodium Croscarmellose, Coating (Hydroxypropyl Methylcellulose And Glycerine), 5-Methyitetrahydrofolate, Methylcobalamin.

From the Healf listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

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One 100 mg dose is our comparison unit, not a recommendation.

Price history

1 price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Lowest recorded
£36.5413 Oct
Highest recorded
£42.991 Oct
First recorded
£42.991 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. Down at Healf: £42.99 → £36.54 (−15%)
  2. First checked at Healf: £42.99

Questions about this product

How much does Metagenics MegaMag® Calmeze (Raspberry) cost per 200 mg?

£2.44 per 200 mg, from £36.54 for 270 g at Healf, checked on 20 October 2026.

How long does one pack last?

15 days at one 200 mg dose. The pack holds 3 g in total.

How much does Metagenics MegaMag® Calmeze (Raspberry) cost per 100 mg magnesium?

61p per 100 mg magnesium, from £36.54 for 270 g at Healf, checked on 20 October 2026.

How long does one pack last?

2 months at one 100 mg dose. The pack holds 6 g in total.

How much does Metagenics MegaMag® Calmeze (Raspberry) cost per 50 mg?

£2.44 per 50 mg, from £36.54 for 270 g at Healf, checked on 20 October 2026.

How long does one pack last?

15 days at one 50 mg dose. The pack holds 750 mg in total.

About Metagenics

All 126 Metagenics products, priced per dose

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