Nearly half of Britons suffer from hay fever, and the antihistamines they take for relief may be causing unexpected sexual side effects. According to Dr. Jen Caudle, these medications can lead to vaginal dryness, making penetrative sex uncomfortable. Dr. Kathryn Basford from Asda Online Doctor explains that antihistamines and decongestants dehydrate mucus membranes throughout the body, including in the vagina, mouth, nose, and eyes.
Why Antihistamines Cause Dryness
Mucus membranes in the vagina produce natural lubrication for comfortable intercourse. When antihistamines reduce this moisture, it can result in pain during sex. Dr. Basford recommends extended foreplay and water-based lubricants to alleviate dryness. She warns against petroleum jelly or similar creams, as they can cause infections and damage latex condoms.
Not everyone experiences this side effect, and prescribed medications should not be stopped without consulting a doctor. For over-the-counter hay fever tablets, switching to a nasal spray may help, as it works locally and is less likely to cause systemic dryness.
Impact on Men
Men are not immune. Some antihistamines can reduce libido or cause erectile dysfunction due to sedation and fatigue. Dr. Basford advises speaking to a GP about alternative medications if sexual health is affected.
Reversible and Common
These side effects are typically reversible once the medication is stopped. However, severe discomfort warrants a doctor's visit. Other causes of vaginal dryness include menopause, which can be treated with HRT or vaginal oestrogen creams. Erectile dysfunction affects 26% of men under 40 and half of men over 40, and may stem from psychological issues, weight, or testosterone deficiency.
If you are concerned about your allergy medication's impact on your sex life, consult your GP for personalized advice.



