Precautions and Warnings With Diphenhydramine
To help minimize risks, it is important to discuss the precautions and warnings with diphenhydramine with your healthcare provider before treatment begins. This medication is not suitable for everyone; you should not take it if you are breastfeeding or allergic to any components used to make diphenhydramine. You should talk to your healthcare provider before using diphenhydramine if you have glaucoma, asthma, or heart disease.
What Should I Tell My Healthcare Provider Before Taking Diphenhydramine?
You should talk with your healthcare provider prior to taking diphenhydramine (Benadryl®, Sominex®, and many other brand names) if you have:
- An enlarged prostate (also known as benign prostatic hyperplasia, or BPH)
- Heart disease
- High blood pressure (hypertension)
- Chronic obstructive pulmonary disease (COPD)
- Alzheimer's disease
- Stomach ulcers
- Gastroesophageal reflux disease (GERD)
- Difficulty passing urine
- An overactive thyroid (hyperthyroidism)
- Any allergies, including allergies to food, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant
Make sure to tell your healthcare provider about any other medications you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.