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Inositol

Also called myo-inositol, myo inositol, D-chiro-inositol, D-chiro inositol.

The best price per 2 g and per month, form by form, across 5 UK retailers, and where to buy it cheapest. A unit for comparing, not advice.

Comparing inositol

We count the inositol a label states per serving, whatever the pack size or the serving size, so every product sits on one scale. Products that combine inositol with other ingredients are listed separately, because their price buys more than inositol. 2 g is our unit for comparing prices, not a dose to take: the label’s directions and a pharmacist decide that.

Myo-inositol

Prices last checked: . Ranked purely by price per 2 g — a comparison unit, not a recommendation. We earn commission when you buy through these links; it never affects the order.

Compared at 2,000 mg. Enter the amount you take to see your own costs.

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Inositol, Myo-inositol: products ranked by price per 2 g
RankProductPer 2 gPer monthLastsBuyHow it is worked out
1
Bulk Inositol
Cheapest per doseInositol1 kg · 2,000 servings · 500 mg a servingDetails and price historyAdd to my stack
13p£3.841.4 years£63.99View at Bulk (opens in a new tab)Free delivery over £49.00, otherwise £3.95AmazonBuy this product on Amazon (opens in a new tab)
Show the working
  • Servings: 1000 ÷ 0.5 per serving = 2000
  • In the pack: 2000 × 500 mg = 1,000 g
  • £63.99 ÷ 1,000 g × 2 g = 12.8p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “1kg”
  • units per serving “Per Serving (500 mg)”
  • amount per serving “[Inositol ; 500mg]”

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2
Bulk Inositol
Inositol500 g · 1,000 servings · 500 mg a servingDetails and price historyAdd to my stack
14p£4.088 months£33.99View at Bulk (opens in a new tab)Free delivery over £49.00, otherwise £3.95AmazonBuy this product on Amazon (opens in a new tab)
Show the working
  • Servings: 500 ÷ 0.5 per serving = 1000
  • In the pack: 1000 × 500 mg = 500 g
  • £33.99 ÷ 500 g × 2 g = 13.6p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “500g”
  • units per serving “Per Serving (500 mg)”
  • amount per serving “[Inositol ; 500mg]”

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3
Nature's Best Myo-Inositol Powder 200g - 200 Grams by Nature's Best - Suitable for Women with Pcos
Best value under 6 months' supplyMyo-Inositol Powder 200g - 200 Grams by Nature's Best - Suitable for Women with Pcos200 g · 50 servings · 4 g a servingDetails and price historyAdd to my stack
19p£5.673 months£18.90View at Lamberts Healthcare (Nature's Best) (opens in a new tab)Free delivery over £20.00, otherwise £2.50AmazonBuy this product on Amazon (opens in a new tab)
Show the working
  • Servings: 200 ÷ 4 per serving = 50
  • In the pack: 50 × 4 g = 200 g
  • £18.90 ÷ 200 g × 2 g = 18.9p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “Myo-Inositol Powder 200g - 200 Grams”
  • units per serving “each 4g scoop is a mere 7 calories”
  • confirmed values “confirmed from the retailer's own product page, not this listing's text: form id myo; amount per serving 4.0; amount unit g; amount refers to compound; units per serving 4.0; pack units 200; pack unit type gram”

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4
Bulk Inositol
Inositol100 g · 200 servings · 500 mg a servingDetails and price historyAdd to my stack
21p£6.2950 days£10.49View at Bulk (opens in a new tab)Free delivery over £49.00, otherwise £3.95AmazonBuy this product on Amazon (opens in a new tab)
Show the working
  • Servings: 100 ÷ 0.5 per serving = 200
  • In the pack: 200 × 500 mg = 100 g
  • £10.49 ÷ 100 g × 2 g = 21p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “100g”
  • units per serving “Per Serving (500 mg)”
  • amount per serving “[Inositol ; 500mg]”

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5
Designs For Health Inositol Powder
Designs for HealthInositol PowderHealf · 250 g · 345 servings · 700 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarianclaimed: gluten-free
25p£7.564 months£30.43View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 345 (as stated on the label)
  • In the pack: 345 × 700 mg = 241.5 g
  • £30.43 ÷ 241.5 g × 2 g = 25.2p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “250g”
  • servings stated “Servings Per Container: about 345”
  • amount per serving “Myo-Inositol ; 700 mg”

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6
Metagenics Myo-Inositol Powder
Myo-Inositol PowderHealf · 122 g · 61 servings · 2 g a servingDetails and price historyAdd to my stackclaimed: vegan
33p£9.832 months£19.99View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 122 ÷ 2 per serving = 61
  • In the pack: 61 × 2 g = 122 g
  • £19.99 ÷ 122 g × 2 g = 32.8p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “122 g (60 servings)”
  • servings stated “60 Servings”
  • units per serving “One scoop (2 g)”
  • amount per serving “Myo-Inositol ; 2000 mg”

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7
Myvitamins Inositol Capsules
Inositol CapsulesMyprotein · 30 capsules · 30 servings · 750 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
35p£10.6411 days£3.99View at Myprotein (opens in a new tab)Free delivery over £55.00, otherwise £4.49AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 750 mg = 22.5 g
  • £3.99 ÷ 22.5 g × 2 g = 35.5p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “30Capsules”
  • units per serving “Consume 1 capsule as a daily serving”
  • amount per serving “Inositol ; 750.0mg ; -”

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8
NOW Foods Inositol - 500mg
Inositol - 500mgHealf · 100 capsules · 100 servings · 500 mg a servingDetails and price historyAdd to my stackclaimed: vegan
38p£11.5025 days£9.58View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 100 ÷ 1 per serving = 100
  • In the pack: 100 × 500 mg = 50 g
  • £9.58 ÷ 50 g × 2 g = 38.3p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “100 caps”
  • servings stated “Servings Per Container: 100”
  • units per serving “Serving Size: 1 Veg Capsule”
  • amount per serving “Inositol ; 500 mg”

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9
Pure Encapsulations Inositol Powder
Inositol PowderHealf · 250 g · 119 servings · 2 g a servingDetails and price historyAdd to my stack
39p£11.614 months£46.06View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 250 ÷ 2.1 per serving = 119
  • In the pack: 119 × 2 g = 238.1 g
  • £46.06 ÷ 238.1 g × 2 g = 38.7p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “250g”
  • servings stated “Servings per container approximately 120”
  • units per serving “Serving size 1 scoop (approximately 2.1 g)”
  • amount per serving “Inositol (as myo-inositol) ; 2 g”

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10
Zita West Inositol + Folate
Inositol + FolateZita West · Healf · 140 g · 30 servings · 4 g a servingDetails and price historyAdd to my stackalso contains vitamin b9
41p£12.232 months£24.45View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 30 (as stated on the label)
  • In the pack: 30 × 4 g = 120 g
  • £24.45 ÷ 120 g × 2 g = 40.8p per 2 g
  • Amount per serving: stated on the label.
  • Also contains: vitamin b9. The price counts the inositol only.
What the retailer's listing says
  • pack units “140 g”
  • servings stated “30 doses (1.5 level teaspoons per day)”
  • amount per serving “Inositol ; 4000mg”

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11
Vivo Life Inositol Powder
Inositol PowderHealf · 60 g · 60 servings · 1 g a servingDetails and price historyAdd to my stackclaimed: veganclaimed: gluten-free
55p£16.4930 days£16.49View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 60 ÷ 1 per serving = 60
  • In the pack: 60 × 1 g = 60 g
  • £16.49 ÷ 60 g × 2 g = 55p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “60g”
  • units per serving “Mix 1g”
  • amount per serving “Myo-Inositol 1000mg”

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12
Designs For Health Inositol
Designs for HealthInositolHealf · 120 capsules · 120 servings · 900 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarianclaimed: gluten-free
69p£20.5554 days£36.99View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 120 ÷ 1 per serving = 120
  • In the pack: 120 × 900 mg = 108 g
  • £36.99 ÷ 108 g × 2 g = 68.5p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “120 capsules”
  • servings stated “Servings Per Container: 120”
  • units per serving “Serving Size: 1 capsule”
  • amount per serving “Myo-Inositol ; 900 mg”

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13
SOLGAR Inositol 500mg
Inositol 500mgHealf · 50 capsules · 50 servings · 500 mg a servingDetails and price historyAdd to my stackclaimed: veganclaimed: vegetarian
72p£21.5813 days£8.99View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 50 ÷ 1 per serving = 50
  • In the pack: 50 × 500 mg = 25 g
  • £8.99 ÷ 25 g × 2 g = 71.9p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “50 capsules”
  • units per serving “Each vegetable capsule provides:”
  • amount per serving “Inositol ; 500 mg”

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14
NOW Foods Choline & Inositol
Choline & InositolHealf · 100 capsules · 100 servings · 250 mg a servingDetails and price historyAdd to my stackalso contains choline
76p£22.7513 days£9.48View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 100 ÷ 1 per serving = 100
  • In the pack: 100 × 250 mg = 25 g
  • £9.48 ÷ 25 g × 2 g = 75.8p per 2 g
  • Amount per serving: stated on the label.
  • Also contains: choline. The price counts the inositol only.
What the retailer's listing says
  • pack units “100 caps”
  • servings stated “Servings Per Container: 100”
  • units per serving “Serving Size: 1 Veg capsule”
  • amount per serving “Inositol ; 250 mg”

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15
Momentous Inositol
InositolHealf · 60 servings · 900 mg a servingDetails and price historyAdd to my stackclaimed: vegan
91p£27.2127 days£24.49View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 60 (as stated on the label)
  • In the pack: 60 × 900 mg = 54 g
  • £24.49 ÷ 54 g × 2 g = 90.7p per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • servings stated “Servings Per Container: 60”
  • units per serving “Serving Size: 2 Capsule”
  • amount per serving “Myo-Inositol ; 900 mg”

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16
SOLGAR Inositol 500mg
Inositol 500mgW-Wellness · 50 capsules · 50 servings · 500 mg a servingDetails and price historyAdd to my stack
£1.08£32.4013 days£13.50View at W-Wellness (opens in a new tab)Free delivery from £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 50 ÷ 1 per serving = 50
  • In the pack: 50 × 500 mg = 25 g
  • £13.50 ÷ 25 g × 2 g = £1.08 per 2 g
  • Amount per serving: stated on the label.
What the retailer's listing says
  • pack units “Contains: 50 Capsules”
  • amount per serving “Inositol 500mg”

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17
SOLGAR Choline Inositol 250mg
Choline Inositol 250mgHealf · 50 capsules · 50 servings · 250 mg a servingDetails and price historyAdd to my stackalso contains cholineclaimed: veganclaimed: vegetarian
£1.36£40.756 days£8.49View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.
Show the working
  • Servings: 50 ÷ 1 per serving = 50
  • In the pack: 50 × 250 mg = 12.5 g
  • £8.49 ÷ 12.5 g × 2 g = £1.36 per 2 g
  • Amount per serving: stated on the label.
  • Also contains: choline. The price counts the inositol only.
What the retailer's listing says
  • pack units “50 capsules”
  • units per serving “Each vegetable capsule provides”
  • amount per serving “Inositol ; 250 mg”

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By shop

Each shop's inositol products, with where its cheapest sits in the market.

How we work out these prices

We count the amount of inositol per serving as stated on the label.

Questions

Where can I buy inositol cheapest in the UK?

On 20 October 2026, the cheapest inositol per dose from a UK seller was Inositol at Bulk (13p per 2 g, £3.84 a month). Then Inositol at Bulk (14p per 2 g, £4.08 a month) and Myo-Inositol Powder 200g - 200 Grams by Nature's Best - Suitable for Women with Pcos at Lamberts Healthcare (Nature's Best) (19p per 2 g, £5.67 a month). That is by price per 2 g, across 5 UK retailers and 17 products, with every price checked daily; the table above shows the working for each.

What is the best price per 2 g of inositol today?

13p per 2 g, for Inositol at Bulk (13p per 2 g, £3.84 a month), on 20 October 2026. The dearest of the 17 products we price is £1.36 per 2 g, and the middle one is 39p.

How much does inositol cost per month?

At one 2 g dose a day, the cheapest works out at £3.84 a month, for Inositol at Bulk, on 20 October 2026. Across the 17 products we price it runs from £3.84 to £40.75 a month. A month is 30 days, and the figure follows the dose you enter in the table.

Do bigger inositol packs cost less per dose?

Mostly, yes: on 20 October 2026, the 2 packs that last more than six months average 13p per 2 g, against 57p for the 15 that last six months or less. The table marks the cheapest pack that lasts six months or less as the best value for anyone who would rather not buy a year at once.

How long does a pack of inositol last?

At one 2 g dose a day, the packs we price last from 6 days to 1.4 years; the middle one lasts 50 days. Each row says how long its pack lasts at the dose you enter.

What does “per 2 g” mean?

It is the unit we use to put every product on the same scale: the price of 2 g of inositol, whatever the pack size or serving size. It is a comparison unit, not a recommendation of how much to take. Use the “Your daily dose” box to see costs at the amount you actually take.

Why is a product I have seen in the shops missing?

If a retailer’s listing does not let us confirm the amount per serving, the pack size or the form, we do not guess and we do not show the product. It appears once its label has been read and confirmed.

How up to date are the prices?

Prices on this page were last checked on 20 October 2026. Every table shows the date its prices were checked. Always confirm the price on the retailer’s site before buying.

Do retailers pay to appear higher?

No. We earn a commission when you buy through our links, but the order is set only by price per dose. No retailer or brand can pay for position.