Redoxon contains the active ingredient pure vitamin C
(ascorbic acid). Vitamin C is involved in a variety of vital
metabolic processes through various mechanisms.
It is used for the treatment and prophylaxis of vitamin C
deficiency syndromes such as scurvy and its precursor
stages.
For the following diseases, vitamin C requirements may be
increased and/or administration of supplementary vitamin
C may be required:
- Bleeding gums associated with vitamin C deficiency;
- Wound healing, for example after tooth extraction;
- Operations;
- Infectious diseases;
- Colds;
- Absorption disorders after operational removal of
the stomach (gastrectomy) or after gastrointestinal
diseases;
- Smoking;
- Pregnancy and breastfeeding;
- Treatment with antibiotics;
- Haemodialysis.
Other factors that need to be considered
As the body cannot produce vitamin C itself, it must be
ingested along with food. Vegetables and fruits, especially
citrus fruits such as oranges, lemons and grapefruit, are
rich in vitamin C. Large amounts of vitamin C can also be

found in liver and kidneys, but not in meat, cereals and
dairy products.
Cooking, rinsing, keeping warm and storing (including
freezing) can heavily reduce vitamin C content. Diabetics
who measure their urinary glucose levels themselves
should not take Redoxon for several days before the test,
as vitamin C can affect the result.

If you are allergic to one or more of the ingredients.
You should not take Redoxon if you suffer from kidney
stones with concurrent increased oxalic acid excretion,
have an iron storage disease or if you suffer from severe
renal impairment or renal failure (GFR < 30 mg/min)
including dialysis patients.
If you experience an allergic reaction during treatment
with Redoxon, you should stop taking the product.
Warnings and precautions
Patients with kidney stones should only take more than
500 mg Redoxon daily after consulting their doctor.
Redoxon is sweetened with aspartame. Patients with
phenylketonuria should therefore consult their doctor
before taking the product.
If you suffer from an intolerance to fructose (very rare),
you should not take Redoxon as it contains sorbitol (the
metabolic breakdown of sorbitol produces fructose).
Contraceptive drugs (oral contraceptives) and certain
medications used to treat allergies and inflammation
(corticosteroids) lead to increased breakdown of vitamin
C. Certain medications that inhibit bone resorption
(calcitonin) increase consumption of vitamin C. Derivatives
of salicylic acid (e.g. acetylsalicylic acid), certain antibiotics
(tetracyclines) and certain drugs used to treat epilepsy
(barbiturates) reduce the availability of vitamin C in the
body through reduced absorption or increased excretion.
High doses of vitamin C can lower the concentrations of
ciclosporin, indinavir, warfarin and disulfiram in the blood.
Concurrent administration of vitamin C and products
containing aluminium for heartburn (antacids) can lead
to increased uptake of aluminium. Caution is especially
advised if you suffer from kidney failure.
High doses of vitamin C can increase the level of
ethinyl estradiol (contraceptive pill) in the blood. When
discontinuing vitamin C, there is a risk of spotting and
failure of the contraceptive effect.
Please inform your doctor, pharmacist or druggist if you
are suffering from other diseases, have an allergy or are

taking other medications (including those you purchase
yourself).
Pregnancy and breastfeeding
There are no concerns for taking Redoxon during pregnancy
or when breastfeeding.

Unless otherwise prescribed by your doctor:
Adults and adolescents over 12 years:
- Take 500mg up to 1 g of Redoxon daily for vitamin
C deficiency and gastrointestinal diseases with
absorption disorders (impaired uptake into the blood).
500 mg daily is usually sufficient to meet increased
requirements.
- Take 1 g daily for colds.
Effervescent tablets: Add 1 effervescent tablet to approx.
150 ml of water. Redoxon is ready to drink as soon as it has
fully dissolved.
Redoxon is not suitable for use in children under 12 years.
Always take the dosage stated in this package leaflet or
prescribed by your doctor. If you think that the effect of
the medicine is too weak or too strong, please consult your
doctor, pharmacist or druggist.

following side effects may occur when taking Redoxon:
Administration may lead to allergic reactions (e.g.
rash, hives, oedema, itching), asthma, shortness of
breath, pulmonary spasms, gastrointestinal disorders
(e.g. diarrhoea, nausea, vomiting, abdominal and
gastrointestinal pains) and decreased blood pressure.
Occasional mild diarrhoea or increased urination and
vomiting have been observed after very high doses (4- 5
g and above).
If you notice any side effects not listed in this leaflet, please
tell your doctor, pharmacist or druggist.
To report any side effect(s):
National Pharmacovigilance and Drug Safety Center (NPC).
Fax: + 966 - 11 - 205 - 7662.
Call NPC at +966 - 11 - 2038222,
Ext.: 2317 - 2356 - 2353 - 2354 - 2334 - 2340.
Toll - free: 8002490000.
E - mail: npc.drug@sfda.gov.sa.
Website: www.sfda.gov.sa/npc

The effervescent tablets are to be stored well sealed at

temperature not above 30°C and protected from moisture.
Keep medicines out of the reach of children.
Do not use after the EXP date printed on the container.
Your doctor, pharmacist or druggist has access to the
detailed summary of product characteristics and will be
happy to provide you with further information.