Ascorbic Acid
What is Ascorbic Acid?
Ascorbic acid is another name for vitamin C. It is an essential vitamin found naturally in many foods but also available as a dietary supplement. Vitamin C is important for growth and development, immune system function, iron absorption, and production of collagen in the body amongst other functions.
Ascorbic Acid in Our Supplements
The ascorbic acid used in our vitamin C supplements is a synthetic version identical to the natural nutrient found in food. As a water-soluble vitamin, excess vitamin C is excreted from the body. Our ascorbic acid vitamin C supplements provide high strength support for those needing increased levels.
Benefits of Ascorbic Acid
Some benefits of ascorbic acid supplements include:
- Powerful antioxidant properties to protect cells from damage
- Supports immune system health and function
- Aids iron absorption for healthy red blood cells
- Important for production of collagen for skin, joints and tissues
- Helps heal wounds and supports bone and teeth health
Are There Any Side Effects?
Ascorbic acid supplements are generally well tolerated when taken at recommended doses. However some mild side effects can occasionally occur including:
- Upset stomach
- Diarrhoea
- Increased urination
- Redness of skin
- Headache
- Insomnia
High doses above the upper limit can increase risk of kidney stones and rebound deficiency when ceasing supplements. Those with iron overload disorders, glucose-6-phosphate deficiency, or kidney stones should check with a health practitioner before taking vitamin C supplements.
What Is the Recommended Daily Intake?
The recommended dietary intake (RDI) for vitamin C in Australia is:
- Men: 45mg per day
- Women: 45mg per day
Smokers are advised to increase their vitamin C intake by 35mg per day due to increased risk of deficiency.
While vitamin C deficiency is rare in Australia, those at higher risk like the elderly, vegetarians, shift workers and smokers may benefit from an increased daily intake through supplementation.
How Much is Too Much?
The upper limit advised for vitamin C supplements without medical supervision is:
Higher doses above the upper limit increase the risk of side effects like kidney stones, diarrhoea, nausea and abdominal cramps. High doses can also lead to rebound deficiency when ceased.
Always follow dosage directions and check with a health practitioner if considering taking more than the upper limit. More is not always better when it comes to supplements.
Frequently Asked Questions
Why is vitamin C important?
Vitamin C has many critical functions in the body including antioxidant activity, immune health, collagen production, iron absorption, and supporting bones, teeth, skin and blood vessels. The body cannot make its own vitamin C so it must come from the diet.
Can you get enough vitamin C from food alone?
Most Australians can get adequate vitamin C from food sources alone by eating the recommended 5 serves of vegetables daily. However, some higher risk groups like smokers, shift workers, strict vegetarians or vegans and the elderly may benefit from supplements.
Is it better to get nutrients from food or supplements?
Experts generally recommend meeting vitamin and mineral needs from a balanced, healthy diet first where possible. However supplements can help fill nutrient gaps when requirements are higher or intake is inadequate. Both food sources and quality supplements have an important role.
When should vitamin C supplements be taken?
Vitamin C supplements are best taken with food for absorption and spread out through the day for sustained benefits. Dividing your daily dose (e.g. 500mg morning and night) is ideal rather than taking all at once.
Do vitamin C supplements boost immunity?
Vitamin C plays an essential role in supporting immune system health and function. Supplements can’t prevent illness, but ensuring adequate intake through food sources and supplements helps strengthen immunity and fight infection when sickness occurs.
-
20% OFF
Blackmores Echinacea ACE + Zinc
(0)Original price was: $29.99.$23.99Current price is: $23.99.View product- Premium immune support formula combining Echinacea, traditionally used to reduce common cold occurrence, with essential vitamins A, C, E and zinc
- Supports healthy immune system function year-round, especially during seasonal challenges
- Australian-made by Blackmores, with no artificial flavours, sweeteners, gluten, wheat or preservatives
- Convenient tablet form for easy integration into your daily wellness routine
-
Cold & Flu, Collagen Peptides, Immune Support, Joint & Bone Health, Liposomal Supplements, Vitamin CGreal Defender-C
(0)$64.35View product- Premium liposomal vitamin C supplement delivering 1000mg per chewable tablet with natural orange flavour
- May support immune system function and help reduce the duration of the common cold
- Assists in joint cartilage health and collagen formation for overall wellness
- Naturally sweetened with monk fruit and xylitol, free from alcohol, sugar, and common allergens
- Vegan-friendly, non-GMO formulation with no artificial ingredients or preservatives
-
15% OFF
Acne Supplements, Beauty & Skincare Supplements, Marine Collagen, Prebiotics, Probiotics, Skin Health, Superfoods, Vitamin B5skinB5 Clear Skin Superfood Booster
(0)Original price was: $39.95.$33.96Current price is: $33.96.View product- Premium skin health supplement with 63 powerful ingredients including VERISOL® marine collagen, probiotics, and vitamin B5 to support clear skin from within
- Features Australian native superfoods like Kakadu plum alongside organic hemp protein and digestive enzymes for holistic wellness
- Free from fillers, artificial additives, sugar, salt, and GMOs – just pure, high-quality ingredients for your skin
- Simply mix with water, juice or smoothies for a convenient daily skin-supporting nutrition boost
-

Greal Bloom
(0)$64.35View product- Comprehensive children’s multivitamin with essential nutrients that may support cognitive function and healthy development
- Delicious natural strawberry flavour with no added sugar, sweetened with xylitol and monk fruit
- Supports immune system function and helps maintain healthy teeth and bone structure
- Australian-made, vegan friendly formula free from common allergens and artificial additives
-
20% OFF
Blackmores Bio Magnesium
(0)Original price was: $34.49.$27.59Current price is: $27.59.View product- Premium dual-form magnesium supplement (oxide and phosphate) for enhanced bioavailability and muscle function support
- Enriched with vitamins B6, C, D3 and manganese to optimize absorption and nervous system health
- May help reduce muscle cramps, tension and stiffness when dietary intake is inadequate
- Australian-made quality formula free from gluten, artificial flavours and common allergens
-
20% OFF
Blackmores Bio C 500 Sustained Release
(0)Original price was: $54.49.$43.59Current price is: $43.59.View product- Sustained-release technology provides gradual vitamin C absorption throughout the day, reducing potential stomach discomfort
- Premium formula with 500mg vitamin C enhanced with bioflavonoids and rosehip extract for comprehensive immune support
- Supports collagen formation for healthy skin and assists with blood vessel health and wound healing
- May help reduce severity and duration of common cold symptoms while fighting free radicals
- Free from artificial flavours, sweeteners, gluten, wheat and milk derivatives
-
20% OFF
Blackmores Bio C 500 Chewable
(0)Original price was: $39.99.$31.99Current price is: $31.99.View product- Pleasant-tasting chewable tablets providing 500mg of vitamin C in dual-form combination for optimal absorption
- Supports immune system health and may reduce severity and duration of common cold symptoms
- Contains antioxidants and citrus bioflavonoids to help reduce free radicals formed in the body
- Naturally sweetened with stevia and xylitol – no artificial flavours, sweeteners, wheat or milk derivatives
-
10% OFF
Whole Earth & Sea Kids Multi
(0)Original price was: $25.95.$23.35Current price is: $23.35.View product- Comprehensive children’s multivitamin with essential nutrients derived from wholefood sources to support growing bodies and minds
- Enhanced with Farm Fresh Factors™ to support optimal nutrition, healthy mental function, and normal immune system function
- Contains a balanced blend of vitamins (C, D3, E, K2, B complex) and minerals (calcium, zinc, iron) for complete nutritional support
- Vegan friendly, non-GMO formula free from artificial sweeteners, flavours, gluten, and common allergens
-
25% OFF
Henry Blooms Vitamin C & Rosehip
(0)Original price was: $47.95.$35.96Current price is: $35.96.View product- Premium formula with 1g of Vitamin C plus 500mg rosehip extract per tablet to support immune function and overall wellbeing
- May help relieve common cold symptoms and support heart health while promoting healthy connective tissue
- Australian-made, vegan-friendly formula free from common allergens including gluten, dairy, soy, and preservatives
-
20% OFF
Blackmores Multivitamins For Men
(0)Original price was: $36.99.$29.59Current price is: $29.59.View product- Specially formulated for men with 23 key nutrients including vitamins A, B, C, D, E and essential minerals to support daily wellbeing
- Contains zinc and selenium to support reproductive health and sperm production
- Features lycopene and antioxidants to help reduce free radicals formed in the body
- Free from gluten, wheat, milk derivatives, added yeast and artificial sweeteners
-
25% OFF
Henry Blooms Immune Forte +
(0)Original price was: $43.85.$32.89Current price is: $32.89.View product- Premium immune support formula with Elderberry, Astragalus and Rehmannia combined with Vitamin C and Zinc to maintain natural defences
- May help reduce the occurrence of common colds and assist in reducing free radicals formed in the body
- Vegan friendly and free from common allergens including wheat, gluten, dairy, soy and artificial additives
- Traditional herbal ingredients blended with essential nutrients for comprehensive immune system support
-
20% OFF
Blackmores Horseradish Garlic + C
(0)Original price was: $36.99.$29.59Current price is: $29.59.View product- Combines horseradish and garlic extracts with 500mg of vitamin C to support respiratory health and immune function
- Traditionally used in Western herbal medicine to help relieve nasal congestion and symptoms of mild upper respiratory tract infections
- May assist in reducing the duration and severity of common cold symptoms
- Free from added yeast, milk derivatives, artificial flavours and preservatives












