How Does Trinovum Work?

Trinovum is very effective at preventing pregnancy because it uses a variety of mechanisms in order to do so. Therefore, if one mechanism happens to fail, there are still two more mechanisms in place to ensure you do not fall pregnant. The pill will be less effective if you do not take it correctly.

It can stop you from falling pregnant by preventing an egg from being released during ovulation. Usually, one egg is released from follicles in the ovary per month, where it travels down the fallopian tube in the hope of being fertilised. This is stimulated by changes in the levels of oestrogen and progestogen. If the pill supplies a certain level of these hormones, the body believes that it has already ovulated and it will not release another egg. Therefore, there will be no egg release through this cycle and there is nothing for the sperm to fertilise.

The pill can also act upon the mucous fluid around the inside of the vagina. This is a natural substance that helps to keep the area clean and healthy. The pill makes this fluid thicker so that it becomes more viscous and forms a mucous plug. This then acts like a barrier against the sperm because they find it very difficult to swim through the mucous. The number of sperm that reach the egg is greatly reduced due to this barrier.

There is one more mechanism that Trinovum uses to ensure you do not fall pregnant. In the rare case that an egg does get released and manages to be fertilised, the pill can still prevent pregnancy. For the egg to be successful, it needs to embed into the uterus wall so that it can grow. It can only do so if the lining is thick enough and the hormones in the pill ensure that this layer is as thin as possible. Therefore, there is little chance of the egg successfully attaching to the uterus wall.

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