7 best vitamin C supplements for 2025, approved by nutritionists
From supporting your immune system to boosting collagen production, the best vitamin C supplements are well known for their generous plethora of benefits. But, as vitamin C isn’t produced or stored naturally by the body, it’s vital that we get enough through diet or supplementation — especially as the NHS recommends adults get no less than 40mg a day, but no more than 1000mg a day to avoid unpleasant side effects. Noted.
That’s why in busy periods — when perhaps I'm not getting my five a day — it’s also the one supplement I reach for consistently. I've also noticed it has incredible benefits on my skin health, too, most notably my hydration levels and skin firmness.
According to the founder of JSHealth and expert nutritionist, Jessica Sepel, I’m not wrong to do so: “While vitamin C is naturally found in many fruits and vegetables, supplements offer a reliable way to help meet your daily needs or fill in gaps. They can be particularly useful during times of stress or when your immune system could use extra support.”
But not all vitamin C supplements are created equal. So which ones are worth taking and are considered the most beneficial? Over the past few weeks, we — a team of GLAMOUR editors, writers and committed freelancers — have tested a range of capsules, tablets and water-soluble supplements to find the very best. Read on to find out which vitamin C supplements are worth your cash, as well as answers to all your FAQs.
- What are vitamin C supplements?
- What are the benefits of vitamin C supplements?
- What should you look for in a vitamin C supplement?
- How should you take vitamin C supplements?
- How we test the best vitamin C supplements
- Meet the experts
- Ahead, the best vitamin C supplements for 2025, approved by GLAMOUR editors
Disclaimer: Keep in mind that this article isn't a substitute for professional medical advice, and our recommendations won't replace a healthy lifestyle and balanced diet.
Meet the experts:
| Jessica Sepel | Founder of JSHealth and expert nutritionist. |
What are vitamin C supplements?
“Vitamin C supplements are a concentrated form of this essential nutrient that supports a wide range of functions in the body,” explains Sepel. “While vitamin C is naturally found in many fruits and vegetables, supplements offer a reliable way to help meet your daily needs or fill in gaps.”
Sepel adds that they can be particularly useful during times of stress or when your immune system could use extra support: “Vitamin C is a water-soluble vitamin, which means it’s not stored in the body and therefore it’s important to get enough day to day.”
Answers about vitamins A to Z(inc).
How we test the best vitamin C supplements:
Since 2021, the GLAMOUR team — writers, editors and committed freelancers — has prioritised personally testing a host of supplements — including vitamin D, iron supplements and collagen supplements — to boost your diet and overall well-being. To filter out the best vitamin C supplements from the rest, we scored each on the following criteria:
- Ease of use — Were the capsules easy to swallow? Did the sachets or powders mix well with water?
- Efficacy — What amount of vitamin C do they provide per serving, and what is its potency?
- Taste and ease of use — On a scale of one to five, how pleasurable was the taste, or how easy was the capsule to swallow?
- Value for money — Would they be happy to commit to the weekly, monthly or bi-monthly spend?
For those we haven't personally reviewed (yet), we paid close attention to the list of ingredients, online reviews, and consulted with industry experts on whether they'd recommend them to their clients. Spoiler: the ones they wouldn't didn't make the cut.
Ahead, the best vitamin C supplements for 2025, approved by GLAMOUR editors:
Altrient-C Liposomal Vitamin C
Product type: Gel.
Dosage: One 5.7ml sachet mixed into water.
Servings per container: 30.Tested by: Cat Hufton, Freelance GLAMOUR Writer.
Pros:
- Easily absorbed by the body due to its liposomal form.
- Great alternative to tablets and capsules.
- 100% vegan.
Cons:
- Some may not like the texture of the gel in water.
I've been taking this vitamin C supplement for several years after I'd heard rave reviews about its health and beauty benefits. What sets this supplement apart (and why I've taken it so consistently) is its patented liposomal gel form that maximises absorption in the body — something the brand claims its research shows far outperforms other supplements.
Each gel sachet contains 1000mg of vitamin C and 500mg of phosphatidylcholine, which you add to water and drink. I find that I need to mix it quite well to make sure none of the gel gets stuck to the bottom, but other than that, it's quick and easy to take. It also makes it a good alternative if you don't like capsules or tablets.
Best of all, it's clinically proven to help with a wide range of bodily functions such as immune support, the reduction of fatigue, protection against oxidative stress and psychological function. I also find that it directly impacts my skin‘s hydration levels and hair thickness. In fact, the brand’s own research reports Altrient-C can improve skin firmness by up to 61%.
Save when you shop the best vitamin C supplements with these Amazon discount codes.
Product type: Tablet.
Dosage: 1 tablet per day.
Servings per container: 30.Tested by: Cat Hufton, Freelance GLAMOUR Writer.
Pros:
- One tablet contains 1000mg of vitamin C.
- As high strength as gel sachets.
- Suitable for vegetarians.
Cons:
- Tablets are quite big.
This high-strength daily supplement contains a whopping 1000mg of vitamin C, which rivals that of our front-runner from Altrient C. Of course, if you'd prefer the ease of a tablet (I personally prefer a gel), you can consider this an equal in terms of potency. Just make sure you don't take more than one tablet a day, as this would take you over the recommended amount.
It's also very good value for money, with one pot of 30 tablets costing £10, or £8 if you opt for regular deliveries via a subscription. If we were forced to point out a downside, we'd say the tablets are a little on the big side but are still comfortable to swallow nevertheless.
Product type: Tablet.
Dosage: 1 tablet with water, twice daily after food.
Servings per container: 60.Tested by: Cat Hufton, Freelance GLAMOUR Writer.
Pros:
- Combined with bioflavonoids and quercetin.
- Contains two types of vitamin C.
- Nutritionist formulated.
Cons:
- May not appeal to those who don't like larger tablets.
If you'd prefer to take a daily tablet rather than a gel, this supplement from JSHealth is a great, high-quality option. Each film-coated tablet contains two different types of vitamin C (500mg of vitamin C combined) along with bioflavonoids and quercetin. Together, these ingredients promise a plethora of health benefits, including normal energy-yielding metabolism, immune support, and collagen formation.
While the tablets are on the larger side, they are fairly easy to swallow and make part of your daily routine. They're also vegan and free from many common allergens such as fish, milk and soy.
Save when you shop the best vitamin C supplements with these JSHealth discount codes.
Protein Works Immunity Vitamin C & Zinc
Product type: Tablet.
Dosage: One tablet per day.
Servings per container: 60.Tested by: Cat Hufton, Freelance GLAMOUR Writer.
Pros:
- Contains 10 active ingredients.
- One-a-day pill.
- 100% vegan.
Cons:
- Contains a lower dose of vitamin C than the others in our lineup.
This supplement from Protein Works is our top pick for when you've been burning the candle at both ends or have had a season of celebrations that have left you run down. One tablet contains 160mg of vitamin C, which, while we'll admit is far lower than other options here, is joined by nine other ingredients, such as zinc and vitamin D3, to bolster the immune system a little differently. Put simply, in the world of supplements, vitamin D and C are besties with the two working brilliantly together when it comes to immune support.
Other ingredients, such as selenium and the inflammatory rosehip, also contribute to the party and make it a powerhouse of goodness. Trust us, you'll thank us when you manage to (smugly) swerve the office cough and cold season.
Save when you shop the best vitamin C supplements with these Protein Works discount codes.
BetterYou Vitamin C Oral Spray
Product type: Oral spray.
Dosage: Five 50ml sprays per day.
Servings per container: 60.Tested by: Cat Hufton, Freelance GLAMOUR Writer.
Pros:
- Easy-to-use spray.
- Pleasant taste of pomegranate and cherry.
- 600mg of vitamin C per five sprays.
- Good value for money.
Cons:
- Some may find it easy to exceed the recommended dose.
Many nutritionists claim that taking supplements in spray form is preferable as the nutrients within them are more quickly absorbed into the bloodstream. With that in mind, we can't recommend this oral spray from BetterYou enough. Great value, plus easy to take and travel with, it's a total no-brainer for those who want all the benefits with as little fuss as possible.
The recommended dosage for adults is five sprays a day, which equates to a very generous 600mg of vitamin C. Just make sure you aren't being too liberal with your dosing, as the NHS warns that taking more than 1000mg of vitamin C a day can cause tummy upsets and flatulence.
Product type: Capsules.
Dosage: 2 capsules a day.
Servings per container: 60.Tested by: Cat Hufton, Freelance GLAMOUR Writer.
Pros:
- Contains bioflavonoids, which enhance the benefits of vitamin C.
- Vitamin C sourced from natural rosehip oil.
- Vegan friendly.
Cons:
- Not as potent as some other options.
Ethical and vegan-friendly, these capsules from Bettervits use vitamin C sourced from rosehip oil for a more natural option. They also contain citrus bioflavonoids that enhance the benefits of vitamin C while supporting a healthy heart and reducing inflammation.
In terms of potency, a daily dose of two tablets provides 500mg of vitamin C and 60mg of bioflavonoids, which is by far enough to reap its many benefits. We're also big fans of this brand in general, thanks to its reputation for high-quality ingredients and exceptional manufacturing standards.
Best multivitamin with vitamin C supplement
Arbor Vitamins Trinity Morning Daily Multi-Nutrients
Product type: Tablet.
Dosage: Three tablets a day.
Servings per container: 30 per pouch, 90 in total.Tested by: Cat Hufton, Freelance GLAMOUR Writer.
Pros:
- Contains a comprehensive range of vitamins, including 250mg of vitamin C.
- Tablets are small and easy to take.
- Contains bioavailable ingredients.
Cons:
- You can't currently buy the pouches separately.
If you'd like to get the benefits of vitamin C but would prefer to take it as a multivitamin rather than a standalone supplement, we'd suggest this option from Arbor Vitamins. You'll receive three pouches labelled ‘Morning’, ‘Day’ and ‘Night’, the idea being that you take one tablet from each pouch three times a day to encourage comprehensive health benefits.
The smallest and arguably easiest-to-take ‘Morning’ tablet houses a range of essential vitamins, including your daily dose of vitamin C (250mg to be exact) along with magnesium, iron and vitamin B5. These are formulated to have a delayed response in the body to allow for maximum absorption.
If you only want to invest in one type of supplement, this provides a good level of vitamin C and a comprehensive range of other vitamins in a bid to boost your immunity and reduce fatigue throughout the day and night.
What are the benefits of vitamin C supplements?
“Vitamin C is best known for supporting immune system health, but its benefits go much further,” says Sepel. “It contributes to healthy collagen formation, which is vital for maintaining skin health, and acts as a powerful antioxidant to help protect cells from oxidative stress. I often recommend it to support overall wellbeing, skin vitality and recovery during times of increased demand.”
What should you look for in a vitamin C supplement?
Sepel recommends choosing a formula that combines vitamin C with other supportive nutrients like bioflavonoids and quercetin, which can enhance its absorption and effectiveness: "A supplement that contains more than one form of vitamin C may also support optimal absorption. Look for options that are nutritionist-formulated and made with quality and efficacy in mind.”
From someone who's tested every product under the sun.
How should you take vitamin C supplements?
Vitamin C is water-soluble, which means it isn’t stored in the body and needs to be replenished regularly. “It can generally be taken once or twice daily, depending on your needs," Sepel continues. "Most people tolerate it well with or without food, though some find it gentler on the stomach when taken with a meal. As always, follow the directions on the label and speak with your healthcare provider for personalised advice.”
