Natural health supplements sometimes have unexpected side effects or interactions with medication that can lead to adverse reactions that are sometimes life threatening. The following is a list of cautions that you should be aware of before using Hawthorn (Crataegus spp.). These are referred to as drug/herb interactions.
Warning 1 - Counterindications: Pregnancy and lactation.
Warning 2 - Cardiac glycosides: may cause increased toxicity and increased hypokalemia. Hawthorn may increase the effects of cardiac glycosides. Experts recommend avoiding concurrent use.
Warning 3 - Antihypertensives: may increase hypotension when used concurrently.
Warning 4 - Central Nervous System Depressants: May increase the sedative effects of CNS depressants.
Warning 5 - Iron salts: May decrease the absorption of iron salts; experts recommend separating dosages by at least 2 hours.
Used as a natural health remedy: Hawthorn is used internally for the following benefits and conditions:
- Congestive heart failue; stage II of NYHA
- Support healthy heart contraction
- Increases coronary blood flow
- reduce tinnitus
Side Effects of Hawthorn
Hawthorn is probably safe for most people but the long-term effects are still unknown. High doses of hawthorn are known to produce:
Other side effects may also occur when using hawthorn internally. (See form below)
- Hypotension (abnormally low blood pressure)
As with any herb, a serious allergic reaction is possible. Seek immediate medical attention if you notice any symptoms of a serious allergic reaction. These may include a rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, or trouble breathing.
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