Caya® diaphragm and Caya® Gel
guarantee safety

Caya® offers triple safety

  • The silicone membrane acts as a mechanical barrier immediatley in front of the cervix. The solid rim of the Caya® safely covers the cervix.
  • Caya®Gel forms, by means of the cellulose (gel-forming agent), an additional physical barrier in front of the cervix.
  • Caya® Gel has an acidic pH value of 3.8, which deactivates sperm cells. At the same time, this pH value has a positive effect on the vaginal fluid and offers protection from vaginal infections.

Caya® Gel

Caya® -Safety, ease of use and comfort have been proven in clinical  studies.

The innovative form and function of Caya® were studied and tested in several independent studies1–4 in the US.

In a multicentric clinical trial by CONRAD4 (, at 10 centres in the US the reliability was examined: In 450 couples, the risk of pregnancy, safety, acceptance of the contraception method and fit were tested.


In case of correct application of the Caya® diaphragm the 12-month risk of pregnancy was found to amount to 13.7 %. This value is not the Pearl Index which defines method safety determined in the long term of use (cf.

The Pearl Index for diaphragms is comparable to that of natural rubber latex condoms for males.

1 Mauck C, Lai JJ, Schwartz J, Weiner D, et al. Diaphragms in clinical trials: is clinician fitting necessary? Contraception 2004; 69:263-266.

2 Yang CC, Maravilla K, Kilbourne-Brook M, Austin G, et al. Magnetic resonance imaging of SILCS diaphragm:anatomical consideration and corroboration with clinical fit. Contraception 2007; 76: 238-244.

3 Schwartz J, Ballagh S, Creinin M, et al. SILCS diaphragm: postcoital testing of a new single-size contraceptive device. Contraception 2008; 78:237-244.

4 Schwartz JL, Weiner D, Lai JJ, et al. Contraceptive efficacy, safety, and acceptability of SILCS, a novel single-sized diaphragm used with contraceptive gel. [Final Report]. Data not yet published.