Hawthorn

Are there any interactions with medications?

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Digoxin (Lanoxin)
Interaction Rating: Major Do not take this combination.

Digoxin (Lanoxin) helps the heart beat more strongly. Hawthorn also seems to affect the heart. Taking hawthorn along with digoxin (Lanoxin) might increase the effects of digoxin and increase the risk of side effects. Do not take hawthorn if you are taking digoxin (Lanoxin).

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Medications for high blood pressure (Beta-blockers)
Interaction Rating: Major Do not take this combination.

Hawthorn might decrease blood pressure. Taking hawthorn along with medication for high blood pressure might cause your blood pressure to go too low.

Some medications for high blood pressure include atenolol (Tenormin), metoprolol (Lopressor, Toprol XL), nadolol (Corgard), propranolol (Inderal), and others.

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Medications for high blood pressure (Calcium channel blockers)
Interaction Rating: Major Do not take this combination.

Hawthorn might decrease blood pressure. Taking hawthorn along with medication for high blood pressure might cause your blood pressure to go too low.

Some medications for high blood pressure include nifedipine (Adalat, Procardia), verapamil (Calan, Isoptin, Verelan), diltiazem (Cardizem), isradipine (DynaCirc), felodipine (Plendil), amlodipine (Norvasc), and others.

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Medications for male sexual dysfunction (Phosphodiesterase-5 Inhibitors)
Interaction Rating: Major Do not take this combination.

Hawthorn might decrease blood pressure. Some medications for male sexual dysfunction can also decrease blood pressure. Taking hawthorn along with medications for male sexual dysfunction might cause your blood pressure to go too low.

Some medications for male sexual dysfunction include sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra).

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Medications that increase blood flow to the heart (Nitrates)
Interaction Rating: Major Do not take this combination.

Hawthorn increases blood flow. Taking hawthorn with medications that also increase blood flow to the heart might increase the chance of dizziness and lightheadedness.

Some of these medications that increase blood flow to the heart include nitroglycerin (Nitro-Bid, Nitro-Dur, Nitrostat) and isosorbide (Imdur, Isordil, Sorbitrate).

Dosing considerations for Hawthorn.

The following doses have been studied in scientific research:

BY MOUTH:

• For heart failure, some specific hawthorn products (Faros 300 by Lichtwer Pharma, Crataegutt forte by Wilmer Schwabe Pharmaceuticals, or HeartCare, Nature's Way) have been used in doses of 160 mg to 1800 mg divided and taken in 2-3 doses daily. These doses have been shown to improve symptoms of heart failure in some people, but they have also been shown to increase the risk of death or being hospitalized due to heart failure.