Controlled-release vaginal vitamin C tablets for relief of non-specific vaginitis/bacterial vaginosis symptoms

Available with or without a prescription at the pharmacist's counter!

Usual dose

The recommended dosage to help reduce/relieve symptoms of non-specific vaginitis/ bacterial vaginosis is one (1) Prevegyne® vaginal tablet per day.

The recommended duration of treatment to restore physiological pH and normal vaginal flora is six (6) days.

If after six (6) days you are still experiencing symptoms or if your symptoms increase while using Prevegyne®, please consult your healthcare professional.

Prevegyne® tablets contain a special vaginal formulation capable of slowly releasing moderate amounts of ascorbic acid (vitamin C) over the course of several hours. Prevegyne® tablets should not be crushed or intentionally split.

In the event that a tablet is accidently split, both halves should be used at once. For your comfort, insert each half by its rounded end.

How to insert Prevegyne®

Wash your hands thoroughly before and after inserting Prevegyne® vaginal tablets.
Remove one (1) tablet from the blister package. To reduce the risk of breaking a tablet, apply localized pressure at the edge of the blister (avoid putting pressure on the center of the tablet). The tip of a spoon or a fingernail may be used to gently break the foil underneath the blister.
To ease insertion, it is recommended to tablets be inserted while lying down, preferably at bedtime.
Insert one (1) Prevegyne® tablet deeply into the vagina using the index finger and/or middle finger.


When inserted in the vagina, vitamin C is not absorbed in significant amounts. Only one (1) tablet should be inserted vaginally per day.

Missed dose

When a tablet has been missed, it should be inserted as soon as possible.

Adverse reactions

The most common adverse reactions associated with Prevegyne® are vaginal itching and burning. Other adverse reactions associated with Prevegyne® may include vaginal discharge, pain or insomnia.

This is not a complete list of side effects.

Should you experience any unexpected side effects while taking Prevegyne® contact your doctor, pharmacist or healthcare professional.

How to store Prevegyne®

Prevegyne® should be stored:

  • At room temperature
  • In a dry place
  • Out of reach of children

Reporting suspected side effects

You can report any suspected adverse reactions associated with the use of any health product to the Canada Vigilance Program in one of the following 3 ways:

  • Report online at
  • Call toll-free at 1-866-234-2345
  • Complete a Canada Vigilance Reporting Form and forward it via:
    Fax (toll-free) to 1-866-678-6789, or
    Mail to: Canada Vigilance Program, Health Canada, Postal Locator 0701D, Ottawa, Ontario K1A 0K9

Postage-paid labels, Canada Vigilance Reporting Form and adverse reaction reporting guidelines are available on the MedEffect™ Canada website at

Note: Should you require information related to the management of side effects, contact your health professional. The Canada Vigilance Program does not provide medical advice.

Warnings and precautions

If you have never been diagnosed with non-specific vaginitis/bacterial vaginosis, it is recommended that you consult your doctor, pharmacist or other healthcare professional.

For vaginal use only. Do not swallow.

BEFORE you use Prevegyne® talk to your doctor, pharmacist or other healthcare professional if you:

  • have a vaginal infection due to Candida (“yeast infection”)
  • are taking anticoagulants (blood thinners)
  • have hemolytic anemia (premature destruction of red blood cells)

Drug interactions

No interactions have been reported with the intravaginal use of Prevegyne®.

About Duchesnay

Duchesnay is a specialty pharmaceutical company with a long-standing commitment to women’s health. In addition to filling the void in terms of scientific research, education and information and developing pharmacological solutions that are safe for use during pregnancy and breastfeeding, Duchesnay is equally committed to ensuring women’s health and improving their quality of life at every stage.

Thus, Duchesnay has broadened its portfolio of products to offer safe and effective therapeutic options that meet the health and quality of life needs of women and their family members at different stages of their lives.

To learn more about Duchesnay, visit