Arginine: A Mayo Clinic study found that patients with early-stage CHF who took arginine for six months had better blood flow to the heart and less angina compared with a placebo group. The suggested dose is one to two grams three times per day, up to a maximum of six grams per day.
Coenzyme Q10 (CoQ10): Researchers examining myocardial biopsies found that up to 75% of all patients with CHF suffered from CoQ10 deficiency. CoQ10 prevents oxidation of LDL - the bad cholesterol - in the blood, a key factor in development of CHF. Most CoQ10 research has used dosages between 90 mg and 200 mg per day. The full beneficial effects of this nutrient may not occur until several months of use.
Hawthorn: The journal Phytomedicine reports that standardized extract of hawthorn is effective in helping people with early-stage CHF. Hawthorn appears to increase blood flow to the heart, increase the strength of heart contractions, and reduce resistance to blood flow in the extremities. In one study, subjects with mild to moderate CHF were given 300 mg of hawthorn flower and leaf extract - standardized to contain 2.2% flavonoids - three times per day for two months. Symptoms of CHF - including heart palpitations, chest pressure, and swelling in the extremities - decreased with the use of hawthorn.
Magnesium: According to the American Journal of Cardiology, magnesium supplementation can reduce the risk of arrhythmia - irregular heartbeat. Many doctors now suggest 300 mg per day of magnesium for overall heart health.