Winston and Porter vitamin C powder in a clear jar, showing the white, fine pharmaceutical-grade vitamin C powder on a white background.
Vittamin C powder by Winston and Porter, 100% pure pharmaceutical grade vitamin C in a clear container with scoop.
Winston and Porter Vitamin C powder in a clear container, showing fine white pharmaceutical-grade vitamin C powder.
Winston and Porter Vitamin C powder in a clear jar, showing the bright orange powder inside, labeled as 100% pure pharmaceutical grade.
Glass jar of Winston and Porter 100% pure pharmaceutical grade vitamin C powder with a white label and silver lid.
Winston and Porter Vitamin C powder in a clear jar, showing the fine, bright orange vitamin C powder inside.

VITAMIN C Powder - 100% Pure Pharmaceutical Grade

Regular price£5.95
/
Tax included. Shipping calculated at checkout.
Size
  • Made in the UK with human-grade ingredients
  • Free delivery on orders over £54.95
  • Subscribe: 50% off your first month, then 10% off every order

Boost your dog, horse, cat or birds immune system and overall health with our premium quality Vitamin C powder.

Increase your energy levels and support your overall well-being with our pure Vitamin C Powder! Say goodbye to tiredness and fatigue, increase your iron absorption, and boost your mood and mental clarity all in one product. EFSA Approved Claims for a healthier, happier you!

This Pharmaceutical grade formula contains no fillers or binders. Includes a free measuring scoop for easy use. 

Nutritional Information

2g powder contains:                               %NRV*

Vitamin C   2000mg                                 10000%

*NRV= Nutrient Reference Value

Ingredient: Vitamin C (L-Ascorbic Acid)

Food Supplement


Recommended Feeding Guidelines:

Suggested Use for Dogs

  • Small dogs: 125–250 mg daily

  • Medium dogs: 250–500 mg daily

  • Large dogs: 500–1,000 mg daily

 Always introduce gradually and consult your vet if your dog has specific health conditions.

Suggested Use for Horses

  • Typical maintenance: 5–10 g per day

Under stress or heavy work: up to 20 g per day (split into two feeds)
Introduce slowly and always supply fresh water.

5ml scoop included in pouch - a LEVEL scoop holds 5g

Fast, tracked delivery from our base in Northallerton. Order before 12:30pm Monday to Friday and we’ll dispatch the same working day.

Free UK deliveryOn orders over £54.95 to England, Scotland and Wales.
Same-day dispatchOrder before 12:30pm, Monday to Friday.
Fully trackedRoyal Mail Tracked and DPD.
We ship worldwideIncluding the USA with customs fees included.

Shipping charges

Our shipping charges are calculated automatically at the cart stage based on the delivery method selected, parcel weight and destination.

We work closely with our courier partners to keep delivery costs as fair and competitive as possible. Shipping charges reflect the actual cost of delivery and handling.

Delivery partners and services

We primarily use Royal Mail Tracked and DPD. Depending on parcel size, weight or destination, orders may be shipped using an alternative courier.

Royal Mail Tracked services (UK)

Service Estimated delivery Description
Tracked 24 Next business day* Express UK delivery
Tracked 24 (Signature) Next business day* Express UK delivery with signature
Tracked 48 1–2 business days* Standard UK delivery
Tracked 48 (Signature) 1–2 business days* Standard UK delivery with signature

*Royal Mail delivery times are estimates only and are not guaranteed next-day services.

Order cut-off times

  • Orders placed before 12:30pm (Monday–Friday) are processed and dispatched the same working day.
  • Orders placed after 12:30pm may be dispatched the following working day.
  • Orders placed on weekends or public holidays are processed on the next working day.

Next day delivery and weekends

  • Orders placed for next day delivery after 12:00pm on Friday, or on Saturday or Sunday, will be dispatched on Monday.
  • Orders placed before 12:00pm on Friday for next day delivery will be dispatched on Friday but may not arrive until Monday.

Free UK delivery

Free standard delivery is available on orders over £54.95 to England, Scotland and Wales. This is applied automatically at checkout where eligible.

  • Scottish Highlands & Islands: free only if the parcel weighs under 2kg (see below).
  • Not available to Northern Ireland, the Channel Islands, the Isle of Man or international destinations. Delivery charges for these areas are shown at checkout.

Scottish Highlands & Islands

Next day delivery is not available to the following areas. These orders are sent using Royal Mail Tracked services (not guaranteed next day).

  • Scottish Highlands & Islands
  • Isle of Man
  • Channel Islands
  • International destinations

Highlands & Islands postcodes include (but are not limited to)

AB31–AB38AB40–AB56BTHSIV1–IV28IV30–IV36IV41–IV49IV51–IV56IV63KA27–KA28KW1–KW17PA20–PA38PA41–PA49PA60–PA78PH4–PH50ZE
Important: customers in these postcode areas must select a Scottish Highlands & Islands shipping rate at checkout. If the wrong option is selected, dispatch may be delayed and we will contact you to request the additional shipping cost before dispatch.

Free delivery to the Highlands & Islands

  • Orders over £54.95 qualify for free delivery only if the parcel weighs under 2kg.
  • Orders over 2kg will incur a delivery charge, even if the order value is over £54.95.

Safe places and delivery responsibility

If you request delivery to a safe place or a neighbour, this is done entirely at your own risk. Winston & Porter cannot accept responsibility for parcels that are lost, stolen or damaged after being left in a location you have specified.

Please add any delivery instructions at checkout in the “Add notes to seller” section (for example “With neighbour” or “In shed”).

Delays and courier issues

Once an order has been dispatched, delivery is the responsibility of the courier. We will always help to resolve delivery issues, but we cannot be held liable for delays caused by courier services, weather conditions or circumstances beyond our control.

International shipping

Customers are responsible for making sure the items they order comply with their country’s import regulations.

  • 🇺🇸 USA: we send with Royal Mail International Tracked, and your shipping cost already includes all customs taxes and handling fees. No surprise charges on delivery, just the price you see at checkout.
  • 🇦🇺 Australia: import taxes, customs duties and handling fees are not included in the shipping cost. These are charged separately on arrival and are payable by the recipient.
  • For all other international destinations, customs fees, duties and taxes are the responsibility of the customer.
  • If customs reject or return an item, original shipping charges are non-refundable.
  • Returned international orders may be refunded for the product cost only, excluding shipping, or re-shipped at additional cost.

Need help with delivery?

If you’re unsure about shipping costs or delivery options, get in touch before placing your order and we’ll be happy to help.

Call us on 01609 770 849 or email info@winstonandporter.com and we'll help you pick the right supplement.

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