Although hops appears generally safe for most people when taken in the recommended daily amount, it can cause side effects such as drowsiness, sedation and reduced alertness. Be careful if you are driving, operating heavy machinery, or doing any other activities that require alertness after taking hops.
The hops plant contains pollen, which may cause allergic reactions such as skin irritation, asthma, hay fever, and lung sensitivities. Stop using hops immediately and see a doctor if you have an allergic reaction.
Hops should be used with caution if you have the following conditions:
- high or low blood sugar
- bleeding disorders
- depression or other related conditions such as bipolar disorder
- pregnancy or breast-feeding
Hops should not be taken with other sedativesedativean agent that induces sleep, relaxes, and reduces tension agents (i.e., agents that can slow brain function) because it may increase the chance of side effects. This includes prescription medications (e.g., sedatives, anesthetics) and natural products or supplements with sedative effects.
Other medications that may interact with hops include:
- substances that affect blood sugar (e.g., insulin)
- hormonal agents (e.g., tamoxifen)
- agents metabolized by the liver’s cytochrome P450 enzyme system
Some examples of supplements that should not be used while taking hops include:
- California poppy
- Jamaican dogwood
- St. John's wort
- yerba mansa
Do not use alcohol while taking hops. Since hops may interfere with anesthetics, stop using hops at least 2 weeks before surgery.
Do not use hops if you are allergic to it or to any plants from the Cannabaceae family (e.g. peanuts, chestnuts, bananas).
If sleeplessness continues for 3 or more weeks, contact a health care provider.
Before taking any new medications, including natural health products, speak to your physician, pharmacist, or other health care provider. Tell your health care provider about any natural health products you may be taking.