Chinese medicine for curing primary hypertension and its preparation method
A technology of essential hypertension and drugs, which is applied in the direction of drug combinations, pharmaceutical formulas, cardiovascular system diseases, etc., can solve the needs of patients who cannot meet the needs of treatment, patients are prone to drug resistance to multiple drugs, contraindications and There are many side effects and other problems, and the effect of reducing plasma renin activity and angiotensin II level, dilating renal artery, and increasing renal artery blood flow is achieved.
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Embodiment 1
[0021] (1) Take 1100 g of Prunella vulgaris, add 6 times the amount of 90% ethanol to reflux extraction for 3 times, each time for 1.5 hours, combine the ethanol extracts, filter, recover ethanol, and dry under reduced pressure to obtain the Prunella vulgaris extract;
[0022] (2) Take 1250g of Uncaria chinensis, 450g of bitter wood, and 400g of lotus seed heart, grind them into coarse powder, add 9 times the amount of 80% ethanol, heat and reflux to extract twice, the first time is 2.5 hours, the second time is 1.5 hours, combined alcohol extraction Liquid, filtered, recovered ethanol and concentrated to a relative density of 1.10-1.15 (50°C), adjusted to pH 2-3 with dilute hydrochloric acid, allowed to stand, filtered, adjusted to neutral acid water, added ethanol to make the alcohol content reach 75 %, let it stand, filter, recover ethanol from the alcohol solution under reduced pressure and concentrate to a relative density of 1.30-1.35 (60°C), dry under reduced pressure to...
Embodiment 2
[0027] (1) Take 1200 g of Prunella vulgaris, add 10 times the amount of 80% ethanol to reflux extraction for 3 times, each time for 2 hours, combine the ethanol extracts, filter, recover ethanol, and dry under reduced pressure to obtain the Prunella vulgaris extract;
[0028] (2) Take 1350g of Uncaria chinensis, 500g of bitter wood, and 500g of lotus seed heart, grind them into coarse powder, add 8 times the amount of 90% ethanol, heat and reflux extraction for 3 times, the first time is 2 hours, and the second and third times are 1.5 hours , combine the alcohol extracts, filter, recover the ethanol and concentrate to a relative density of 1.10-1.15 (50°C), adjust the pH to 2-3 with dilute hydrochloric acid, let it stand, filter, adjust the acid water to neutral, add ethanol to make the containing The alcohol content reaches 80%, let it stand, filter, the alcohol solution is decompressed to recover ethanol and concentrated to a relative density of 130-1.35 (60°C), and dried und...
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