RIDDLES VITAMIN C TABLET

Ascorbic acid BP   100 mg
Read all of this leaflet carefully before you take this medicine.
• Keep this leaflet. You may need to read it again.
• If you have further questions, please ask your Pharmacist or your Doctor.
• This medicine has been prescribed for you. Do not pass it on to others. It may harm them, even if their symptoms are the same as yours.

In this leaflet:

1. What Riddles Vitamin C tablet is and what it is used for: 
2. Precautions and warnings before you take Riddles Vitamin C tablet
3. How to take Riddles Vitamin C tablet
4. Possible side effects.
5. Symptoms and Treatment of Overdosage 
6. How to store Riddles Vitamin C tablet
7. Further information

1. WHAT RIDDLES VITAMIN C TABLET IS AND WHAT IT IS USED FOR 
Riddles Vitamin C tablet is a proprietary medicine containing Ascorbic acid as the active ingredient.  Ascorbic acid is an essential water soluble vitamin involved with the biologic oxidations and reductions used in cellular respiration. It influences tyrosine metabolism, conversion of folic acid to folinic acid, carbohydrate metabolism and resistance to infections. Deficiency causes degenerative changes in the capillaries, bone and connective tissue known as scurvy which can be reversed with adequate intake.

2. PRECAUTIONS AND WARNING BEFORE YOU TAKE RIDDLES VITAMIN C TABLET 
Contraindication:
• Do not take Riddles Vitamin C tablet if you are allergic or hypersensitive to the active drug or any of the ingredients of Riddles Vitamin C tablet. However, there are no known contraindications.

Pregnancy and Lactation:
• Ingestion of large doses during pregnancy may result in scurvy in neonates
• Breast feeding mothers should take Riddles Vitamin C tablet with caution as it appears in breast milk. 
• Hemolysis has been caused in neonates, both healthy ones and those with glucose-6-phosphate dehydrogenase deficiency. 

Do not take Riddles Vitamin C if:
You are doing amine dependent tests for stool occult blood in 48-72 hours or tests based on oxidation-reduction reactions as in glucose determinations.

Take special care with Riddles Vitamin C Tablet if:
• You have renal insufficiency or are prone to renal calculi.
• You have diabetes or are on sodium-restricted diets or anticoagulant therapy.

Driving and using Machines 
Riddles Vitamin C tablet is not known to cause sedation or dizziness, and will not adversely affect operating machinery or any activity that requires alertness.

Taking other Medicines:
Please inform your Pharmacist or Doctor if you are taking or about to take any other medicine, including those obtained without a prescription.

3. HOW TO TAKE RIDDLES VITAMIN C TABLET
• Adults and Children 12years and above: one tablet 2 - 3 times daily.

It may be taken directly or mixed with food. Prolonged use of large doses causes increased metabolism of ascorbic acid; scurvy may result when reduced to normal. But conditions that elevate the metabolic rate (hyperthyroidism, fever, infection, burns, postoperative states, neoplastic disease and chronic alcoholism) significantly increase ascorbic acid requirements.

4. POSSIBLE SIDE EFFECTS
Like all medicines, Riddles Vitamin C tablets can cause side effects, although not everybody gets them. Side effects like diarrhea, faintness, dizziness, acid urine, oxaluria, renal calculi and discomfort at injection site have been reported.

Possible interactions with food and drugs
It may lower urine pH causing renal reabsorption of acidic drugs while basic drugs like tricyclic antidepressants may cause decreased reabsorption and therapeutic effect. Salicylates inhibit ascorbic acid uptake by leukocytes and platelets while sulphonamides may cause crystallization; avoid use together. It may inhibit the anticoagulant effect of warfarin while influencing the intensity and duration of dicumarol. It may also increase the plasma levels of ethinyl estradiol and iron absorption from the GI tract by maintaining it in the ferrous state. Smoking may however decrease serum levels.

5. SYMPTOMS AND TREATMENT OF OVERDOSAGE 
Excessively high doses of ascorbic acid are excreted really and rarely accumulate. Serious adverse effects or toxicity are uncommon. Severe effects require discontinuation of therapy. 

6. HOW TO STORE RIDDLES VITAMIN C TABLET                                                                                                                                                           Keep tablets out of reach or sight of children and stored below 300c. Keep it in the original package. Check the expiry date on the label and do not use product if expired.  

7. FURTHER INFORMATION
In addition to Ascorbic acid, the other ingredients in Riddles Vitamin C tablet are: Lactose, maize starch, povidone, sodium lauryl sulphate, erythrosine, tartrazine, sodium metabisulphite, silicon dioxide, stearic acid, flavour and aspartame.  

Date of publication / review: Effective January, 2016, this publication is subject to review every two years and upon receipt of new product information.

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