Here is the translated text: "How Can I Lower My Blood Pressure Immediately?" Take a warm bath or shower. Stay in your shower or bath for at least 15 minutes and enjoy the warm water. Do a breathing exercise. Take a deep breath from your core, hold your breath for about two seconds, then slowly exhale. Relax! What herbal supplement is good for high blood pressure? To be on the safe side, always talk to your health care provider before starting any new treatments. Blood Pressure Treatment Alternatives. The following herbs and supplements may be beneficial as alternative hypertension treatments: Hawthorn Fish oil Garlic. Magnesium. Coenzyme Q10. Folic acid.