5 Common Medications That Could Increase Cancer 

Recent reports have shown that some widely used medications, both prescription and over-the-counter, may raise the risk of developing certain types of cancer. 

While cancer remains one of the leading causes of death globally, awareness about potential risks in everyday medications is growing.

Patients are warned to stop taking prescribed drugs without consulting their doctor. “Every medicine carries both risks and benefits.” 

Here are Medications That Could Increase Cancer:

1. Birth Control Pills

Oral contraceptives, used by millions of women annually, contain synthetic hormones estrogen and progesterone. While they are highly effective in preventing pregnancy, research shows that they can slightly increase the risk of breast cancer. 

However, they may also reduce the risk of ovarian cancer by limiting the number of times a woman ovulates, which decreases hormone exposure that can affect DNA.

2. Over-the-Counter Cold Medications Containing Benzene

Some generic cold medicines have been found to contain benzene, a chemical linked to blood cancers like leukaemia. 

Benzene is being phased out of medications by 2026, but caution is advised when using generic or unverified cold remedies. Benzene has also been detected in certain hand sanitisers and personal care products.

3. Ranitidine (Zantac)

Ranitidine, once a common heartburn medication, was recalled in 2020 after it was found to contain NDMA, a substance linked to liver, stomach, bladder, and prostate cancers. 

Though no longer available for sale, leftover tablets may still be in households. Safer alternatives are now widely available.

4. Supplements

Many dietary supplements are not strictly regulated, and studies have revealed discrepancies between listed ingredients and actual contents in some products. 

Contaminants such as lead, arsenic, cadmium, and mercury have been detected in certain protein powders and other supplements, which can pose long-term health risks.

5. Hormone Replacement Therapy (HRT)

HRT, commonly used to ease menopause symptoms, boosts estrogen and progesterone levels in the body. While it can slightly increase breast cancer risk, some studies suggest it may lower the risk of other cancers, including oesophageal cancer.