Hormonal contraception affected (NHS)

• the combined pill
• the progestogen-only pill
• a patch
• a vaginal ring
• an implant

Medication

Some medications, such as antibiotics and antifungals (and others), prevent hormonal birth control from being effective, when prescribed with medication always ask your doctor how it may interact with other medications you take including birth control. This includes medication you purchase at a pharmacy always ask the pharmacist!

Herbs

Some herbal supplements such as melatonin and vitamin C can effect your birth control in certain doses, this also extends to teas and herbal remedies. If you plan on having unprotected sex consult a doctor or pharmacist to check any herbs you consume will not effect the birth control

Not using it properly / taking it regularly

The most common cause of hormonal contraceptives being ineffective are if they are not used regularly. Always follow the instructions on your birth control, for oral contraceptives (the pill) this usually includes taking the medication everyday at the same time and not skipping days.

And no, if you miss a day taking two the next day will not make up for it. If you miss a day (or more) always make sure to use other forms of contraception when have sex eg condoms.

If implants are not put in properly or if an intrauterine device (IUD) gets moved out of place it can also alter the effectiveness.

Obesity

Obesity can also effect how well medications, including birth control, so as always consult a doctor if you have concerns about this!

Stay safe and if in doubt always consult a doctor!