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MegaMag® Kids + Teens, 105 g

£29.74 for 105 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 magnesium83pOne 100 mg dose is our comparison unit for magnesium. It is not a recommendation.
A day83p
A week£5.78
A month£24.78
A year£301.53

At one 100 mg dose a day, this pack lasts 36 days. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Magnesium

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 120 mg = 3.6 g
  • £29.74 ÷ 3.6 g × 100 mg = 82.6p per 100 mg magnesium
  • A week 82.6p × 7 = £5.78 · a month × 30 = £24.78 · a year × 365 = £301.53
  • Amount per serving: stated on the label.

Lemon balm

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 150 mg = 4.5 g
  • £29.74 ÷ 4.5 g × 500 mg = £3.30 per 500 mg
  • A week £3.30 × 7 = £23.13 · a month × 30 = £99.13 · a year × 365 = £1206.12
  • Amount per serving: extract weight stated on the label.

Niacin (vitamin B3)

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 16 mg = 480 mg
  • £29.74 ÷ 480 mg × 500 mg = £30.98 per 500 mg
  • A week £30.98 × 7 = £216.85 · a month × 30 = £929.37 · a year × 365 = £11307.40
  • Amount per serving: stated on the label.

Pantothenic acid (B5)

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 10 mg = 300 mg
  • £29.74 ÷ 300 mg × 500 mg = £49.57 per 500 mg
  • A week £49.57 × 7 = £346.97 · a month × 30 = £1487.00 · a year × 365 = £18091.83
  • Amount per serving: stated on the label.

Thiamine (vitamin B1)

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 10 mg = 300 mg
  • £29.74 ÷ 300 mg × 100 mg = £9.91 per 100 mg
  • A week £9.91 × 7 = £69.39 · a month × 30 = £297.40 · a year × 365 = £3618.37
  • Amount per serving: stated on the label.

Vitamin C

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 100 mg = 3 g
  • £29.74 ÷ 3 g × 1 g = £9.91 per 1 g
  • A week £9.91 × 7 = £69.39 · a month × 30 = £297.40 · a year × 365 = £3618.37
  • Amount per serving: stated on the label.

Vitamin D3

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 400 IU = 12,000 IU
  • £29.74 ÷ 12,000 IU × 1,000 IU = £2.48 per 1,000 IU
  • A week £2.48 × 7 = £17.35 · a month × 30 = £74.35 · a year × 365 = £904.59
  • Amount per serving: stated on the label.

Zinc

  • Servings: 105 ÷ 3.5 per serving = 30
  • In the pack: 30 × 5 mg = 150 mg
  • £29.74 ÷ 150 mg × 15 mg = £2.97 per 15 mg zinc
  • A week £2.97 × 7 = £20.82 · a month × 30 = £89.22 · a year × 365 = £1085.51
  • 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 · 120 mg a serving · £24.78 a month · a pack lasts 36 days83pshown 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: lemon balm

Compare every product in this form →
VimergyLemon BalmCheapest per 500 mgHealf · 175 mg a serving · £31.68 a month · a pack lasts 40 days£1.06£42.50View at Healf (opens in a new tab)
VimergyLemon BalmHealf · 175 mg a serving · £31.96 a month · a pack lasts 3 months£1.07£89.49View at Healf (opens in a new tab)
VimergyLemon BalmHealf · 175 mg a serving · £52.86 a month · a pack lasts 11 days£1.76£18.50View at Healf (opens in a new tab)
This productHealf · 150 mg a serving · £99.13 a month · a pack lasts 9 days£3.30shown above

Ranked purely by price per 500 mg. 24 combination products also contain lemon balm.

How it compares: niacinamide

All 5, ranked →
Niacinamide TabletsCheapest per 500 mgMyprotein · 450 mg a serving · £1.85 a month · a pack lasts 3 months6p£4.99View at Myprotein (opens in a new tab)
Niacinamide TabletsMyprotein · 450 mg a serving · £3.32 a month · a pack lasts 27 days11p£2.99View at Myprotein (opens in a new tab)
NiacinamideHealf · 500 mg a serving · £3.42 a month · a pack lasts 6 months11p£20.49View at Healf (opens in a new tab)
This productHealf · 16 mg a serving · £929.37 a month · a pack lasts under a day£30.98shown above

Ranked purely by price per 500 mg. 164 combination products also contain niacin (vitamin B3).

How it compares: pantothenic acid (B5)

Compare every product in this form →
Pantothenic AcidCheapest per 500 mgHealf · 500 mg a serving · £4.71 a month · a pack lasts 3 months16p£15.69View at Healf (opens in a new tab)
Vitamin B5 500mg Pantothenic AcidLamberts Healthcare (Nature's Best) · 500 mg a serving · £5.25 a month · a pack lasts 2 months18p£10.50View at Lamberts Healthcare (opens in a new tab)
HealthAidCalcium Pantothenate (Vitamin B5) 750mg Prolonged ReleaseVitamin Planet · 750 mg a serving · £11.53 a month · a pack lasts 45 days38p£17.30View at Vitamin Planet (opens in a new tab)
This productHealf · 10 mg a serving · £1487.00 a month · a pack lasts under a day£49.57shown above

Ranked purely by price per 500 mg. 189 combination products also contain pantothenic acid (B5).

How it compares: thiamine (vitamin B1)

Compare every product in this form →
Vitamin B1 (Thiamin) 100mgCheapest per 100 mgLamberts Healthcare (Nature's Best) · 100 mg a serving · £2.50 a month · a pack lasts 3 months8p£7.50View at Lamberts Healthcare (opens in a new tab)
Natures AidVitamin B1 100mg 90 TabletsLloyds Pharmacy · 100 mg a serving · £3.83 a month · a pack lasts 3 months13p£11.49View at Lloyds Pharmacy (opens in a new tab)
This productHealf · 10 mg a serving · £297.40 a month · a pack lasts 3 days£9.91shown above

Ranked purely by price per 100 mg. 208 combination products also contain thiamine (vitamin B1).

How it compares: vitamin C

All 113, ranked →
Vitamin C Plus TabletsCheapest per 1 gMyprotein · 1 g a serving · £1.00 a month · a pack lasts 6 months3p£5.99View at Myprotein (opens in a new tab)
Vitamin C Crystals PowderHealf · 1.1 g a serving · £1.01 a month · a pack lasts 7 months3p£7.61View at Healf (opens in a new tab)
Vitamin C PowderLamberts Healthcare (Nature's Best) · 1 g a serving · £1.50 a month · a pack lasts 8 months5p£12.50View at Lamberts Healthcare (opens in a new tab)
This productHealf · 100 mg a serving · £297.40 a month · a pack lasts 3 days£9.91shown above

Ranked purely by price per 1 g. 950 combination products also contain vitamin C.

How it compares: vitamin D3

All 207, ranked →
WeightWorldHigh-Strength Vitamin D3 TabletsCheapest per 1,000 IUWeightWorld · 4,000 IU a serving · 17p a month · a pack lasts 4.4 years1p£8.99View at WeightWorld (opens in a new tab)
ZipVitVitamin D3 4000iuZipVit · 4,000 IU a serving · 17p a month · a pack lasts 4 years1p£8.49View at ZipVit (opens in a new tab)
WeightWorldVitamin D3 + K2 (MK7) TabletsWeightWorld · 4,000 IU a serving · 21p a month · a pack lasts 4 years1p£9.99View at WeightWorld (opens in a new tab)
This productHealf · 400 IU a serving · £74.35 a month · a pack lasts 12 days£2.48shown above

Ranked purely by price per 1,000 IU. 439 combination products also contain vitamin D3.

How it compares: zinc bisglycinate

All 10, ranked →
WeightWorldZinc Bisglycinate TabletsCheapest per 15 mg zincWeightWorld · 50 mg a serving · 45p a month · a pack lasts 1.8 years1p£9.99View at WeightWorld (opens in a new tab)
ZipVitZinc Bisglycinate 25mgZipVit · 25 mg a serving · 49p a month · a pack lasts 1.7 years2p£9.99View at ZipVit (opens in a new tab)
VitaBrightZinc Bisglycinate Tablets with CopperVitaBright · 50 mg a serving · 58p a month · a pack lasts 1.8 years2p£12.99View at VitaBright (opens in a new tab)
This productHealf · 5 mg a serving · £89.22 a month · a pack lasts 10 days£2.97shown above

Ranked purely by price per 15 mg zinc. 115 combination products also contain zinc.

On the label

Magnesium · Bisglycinate (glycinate)
120 mg per serving (stated on the label)
Lemon balm · Lemon balm
150 mg per serving (extract weight stated on the label)
Pack
105 g · 30 servings · 3.5 g a serving
Cost per serving
99p (30 servings in the pack)
More label details
Niacin (vitamin B3) · Niacinamide
16 mg per serving (stated on the label)
Pantothenic acid (B5) · Pantothenic acid (B5)
10 mg per serving (stated on the label)
Thiamine (vitamin B1) · Thiamine
10 mg per serving (stated on the label)
Vitamin C · Standard (ascorbic acid and ascorbates)
100 mg per serving (stated on the label)
Vitamin D3 · Vitamin D3
400 IU per serving (stated on the label)
Zinc · Bisglycinate
5 mg per serving (stated on the label)
Claimed on the listing
vegetarian
Sold by
Healf
What the listing says
“105 g (30 servings)” · “Kids + Teens - 30 servings” · “mix 1 scoop (3.5 g)” · “Melissa officinalis Extract) 150 mg”
Ingredients

Magnesium (Bisglycinate) 120 Mg-32%*, Flavour: Apple Flavour, Citric Acid, Lemon Juice Powder, Tricalcium Phosphate, Lemon Balm (Bluenesse® Melissa Officinalis Extract)? 150 Mg, Flavour: Citrus Flavour, Orange Flavour, Vitamin C (Ascorbic Acid) 100 Mg-125%*, Sweetener: Steviol Glycosides From Stevia, Zinc (Bisglycinate) 5 Mg-50%*, Niacin (Vitamin B3 As Niacinamide) 16 Mg-100%*, Vitamin B1 (Thiamine HCI) 10 Mg-909%*, Pantothenic Acid (Vitamin B5) (Calcium Pantothenate) 10 Mg-167%*, Vitamin B2 (Riboflavin) 10 Mg-714%*, Vitamin B6 (Pyridoxal-5-Phosphate) 5 Mg-357%*, Curcuma Longa, Folate (Calcium-L-Methylfolate) 200 Ug-100%*, Vitamin B12 (Methylcobalamin) 20 Pg-800%*, Vitamin D (Cholecalciferol) 10 Ug-200%* (400iu), Vitamin K2 (Menaquinone-7) 10 Ug-13%*.

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
£29.748 Oct
Highest recorded
£34.991 Oct
First recorded
£34.991 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. Down at Healf: £34.99 → £29.74 (−15%)
  2. First checked at Healf: £34.99

Questions about this product

How much does Metagenics MegaMag® Kids + Teens cost per 500 mg?

£3.30 per 500 mg, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

9 days at one 500 mg dose. The pack holds 4.5 g in total.

How much does Metagenics MegaMag® Kids + Teens cost per 100 mg magnesium?

83p per 100 mg magnesium, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

36 days at one 100 mg dose. The pack holds 3.6 g in total.

How much does Metagenics MegaMag® Kids + Teens cost per 500 mg?

£30.98 per 500 mg, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

under a day at one 500 mg dose. The pack holds 480 mg in total.

How much does Metagenics MegaMag® Kids + Teens cost per 500 mg?

£49.57 per 500 mg, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

under a day at one 500 mg dose. The pack holds 300 mg in total.

How much does Metagenics MegaMag® Kids + Teens cost per 100 mg?

£9.91 per 100 mg, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

3 days at one 100 mg dose. The pack holds 300 mg in total.

How much does Metagenics MegaMag® Kids + Teens cost per 1 g?

£9.91 per 1 g, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

3 days at one 1 g dose. The pack holds 3 g in total.

How much does Metagenics MegaMag® Kids + Teens cost per 1,000 IU?

£2.48 per 1,000 IU, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

12 days at one 1,000 IU dose. The pack holds 12,000 IU in total.

How much does Metagenics MegaMag® Kids + Teens cost per 15 mg zinc?

£2.97 per 15 mg zinc, from £29.74 for 105 g at Healf, checked on 20 October 2026.

How long does one pack last?

10 days at one 15 mg dose. The pack holds 150 mg in total.

About Metagenics

All 126 Metagenics products, priced per dose

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