

Pharmacodynamics:
Nopoxypol is a non-ionic surface-active compound, its spermicidal effect is due to fragmentation and a decrease in sperm motility. It has bactericidal activity against gonococci and chlamydia. In vitro is active against HIV infections, but there are no clinical data on reducing the risk of HIV infection when using ponoxinol. Lactic acid has a beneficial effect on the normal microflora and vaginal mucosa.
When using a suppository, the concentration of ponoxinol in the vagina is on average 1-1.7%, which is sufficient for the manifestation of spermicidal activity.
The spermicidal action of the suppository occurs after its dissolution, approximately 10 minutes after insertion into the vagina, and lasts no more than 2 hours.
When using the drug does not form foam.
Pharmacokinetics:
Data on the pharmacokinetics of ponoxinol in humans are absent.
Local contraception.
Active substance: Nonoxynol-9 - 120 mg;
Excipients: D-, L-Lactic acid, macrogol 4000 (polyethylene oxide), macrogol 1000 (polyethylene oxide).
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The suppository is inserted into the vagina as deep as possible, no less than 10 minutes and not earlier than 1 hour before the start of sexual intercourse. When re-sexual intercourse using a new suppository in the same way. After intercourse for 6 hours, it is not recommended to produce a toilet of the vagina in order to avoid loss of the contraceptive effect.
Rarely - dermatitis, itching, burning of the vagina of a woman or a penis partner.
Irritation usually passes without special measures.
Because of the possible reduction in spermicidal activity, the drug Nonoxynol is not recommended for use with other drugs intended for intravaginal administration.
When pregnancy does not apply.
Can be used for contraception during breastfeeding.
When itching, use of the drug should be discontinued.
With frequent use of suppositories, the likelihood of side effects increases.
Use in combination with a condom is possible.
Studies and clinical trials of Nonoxynol (Click to expand)