'Previson' oral contraceptive pills.
‘Prevision’ is one of the earliest brands of oral contraceptive pills known as ‘first generation’ pills. Monophasic pills (like the one shown at the bottom of this image) are taken for 21 days, at the same time each day, with a week in between packets. The pill suppresses ovulation, which is the release of eggs into the womb. They also make it difficult for sperm to reach an egg, or for an egg to implant itself in the lining of the womb, all preventing pregnancy. First generation pills were introduced in the 1960s. They had high levels of hormones, which caused heart problems and increased the risks of heart attacks and strokes. Later contraceptive pills had much lower doses of hormones. The pills are shown with other oral contraceptives.
Related Themes and Topics
A substance produced in one part of the body which passes into the bloodstream and is then carried to other (distant) organs or tissues, where it acts to modify their structure or function
The use of methods and techniques to prevent pregnancy from sex.
Glossary: oral contraceptive pill
A drug containing hormones, taken to stop pregnancy.
Also known as a pill, it is made by compressing a powdered form of one or more drugs. It is usually taken by mouth, but may be inserted into a different body cavity.
Common term for vaginal bleeding, which happens once a month as part of a female's menstrual cycle. Periods usually last from one to five days and begin when a girl reaches puberty.