Herbs and Vitamins to Avoid with High Blood Pressure | NutriGardens

7 Herbs and Vitamins to Avoid with High Blood Pressure

High blood pressure impacts 116 million adults in the United States alone. While many people take medication to control blood pressure, some make dietary changes, too. However, it is crucial to be discerning with these changes because there are certain herbs and vitamins to avoid with high blood pressure.

Below is a list of herbs and vitamins that have been thoroughly studied and should be avoided by anyone with high blood pressure.

The 7 Herbs and Vitamins to Avoid with High Blood Pressure

7 Herbs and Vitamins to Avoid with High Blood Pressure | NutriGardens

Certain herbs, vitamins, and minerals may have substantial health benefits, yet for those with high blood pressure, they can have adverse effects. A few of the things to consider:

Vitamin D

While there is conflicting evidence of vitamin D’s impact on blood pressure, studies show that people with low vitamin D sometimes also struggle with blood pressure issues. This could be because vitamin D is a key vitamin that indirectly modulates blood pressure.

A systematic review and meta-analysis found that in studies totaling over 25,000 people, supplementation with vitamin D didn’t impact blood pressure. The main difference could be in older or obese individuals with low vitamin D levels; this is where a correlation with high blood pressure has been found.

Another possible reason vitamin D is on the list of vitamins to avoid with high blood pressure is that as a kind of steroid hormone, it promotes the absorption of calcium in the body. Low calcium levels are associated with hypertension, as studied on populations with low calcium diets. One way to get vitamin D 100% naturally is via sunlight which also boosts nitric oxide. As a result, people deficient in this key vitamin only need 10 to 15 minutes of sun exposure to boost vitamin D production.


Arnica is an herb in the sunflower family that’s native to the northern U.S., Siberia, Canada, and Europe. Traditionally, it was used to treat injuries and pain, but today, there are various arnica supplements that are available in diluted forms for ingestion.

Moderation is key; taking large amounts of undiluted arnica can cause a number of severe side effects, including high blood pressure, vomiting, shortness of breath, elevated heart rate, rashes, and more.


Guarana is often included in lists of foods that give you energy and is a popular ingredient in energy drinks. The plant, which is native to the Amazon, contains caffeine as well as theobromine and theophylline (both of which are similar to caffeine).

Caffeine and caffeine-like substances can increase the heart rate and, consequently, increase blood pressure. Research has shown that guarana and ephedra supplements, even when taken as directed, can increase blood pressure and heart rate.

A beetroot supplement may serve as a healthy alternative to guarana and other energy-boosting supplements. The naturally occurring nitrate in beetroot can help increase energy levels by boosting nitric oxide while nourishing the body with essential vitamins and minerals - offering sustained energy throughout the day without the crash.


Licorice root is considered one of the oldest herbal remedies and has long been used in numerous cultures around the world to treat a wide variety of ailments, as evidenced by ethnobotany examinations that dive into its rich history.

The root is believed to be plentiful in antioxidants and has anti-inflammatory and antimicrobial effects. More research is needed to back these claims, but that has not stopped people from taking licorice supplements to help with digestion and other ailments.

The main active compound in licorice is glycyrrhizin. Glycyrrhizin gives the plant a sweet taste, but it may also have antimicrobial, antioxidant, and anti-inflammatory effects.

Although licorice may have some potential uses, those with high blood pressure may want to steer clear of this root. Research has shown that even low doses can significantly increase blood pressure.


Ephedra is an herb that grows in arid to semi-arid regions of the world and is most notably known for its dangerous reactions, which in rare cases may include:

  • Strokes
  • Seizures
  • Heart attacks

The herb causes blood pressure elevation and quickening heartbeat, especially if caffeinated ephedra is taken. These herbal supplements are often used for weight loss. When taken in doses of 150mg, ephedra has been shown to cause a significant increase in both blood pressure and heart rate.

Avoiding caffeine and any type of fat-burning supplement is ideal for people with high blood pressure. Smarter food and dietary choices can have a major impact on regulating blood pressure.

St. John’s Wort

St. John’s Wort is a popular herb often used to aid in treating depression

Additionally, St. John’s Wort has been used topically to treat wounds.

The herb may be helpful for some individuals, but St. John’s Wort has been associated with some severe side effects and potentially dangerous drug interactions. Notably, St. John’s Wort has been shown to increase blood pressure.

Studies indicate that St. John’s Wort may interfere with some blood pressure medications, making them less effective. Anyone taking blood pressure medication or suffering from hypertension may want to avoid St. John’s Wort unless otherwise instructed by a healthcare professional.


Sodium is a mineral found in many multivitamins. So while it is not technically one of the vitamins to avoid with high blood pressure, it is listed because it is important to be mindful of. Sodium is found in many foods and is responsible for nerve and muscle function.

Too much sodium is linked to elevated blood pressure levels. Lowering consumption can help bring down blood pressure levels and improve vascular function.

Sodium in quantities less than 1,500 mg daily is acceptable for most people with high blood pressure. Larger quantities of salt can lead to water retention, which is known to put added stress on a the heart and blood vessels.

Consuming too much sodium is common in today’s world with highly processed foods. A mere teaspoon of salt contains 2,400 mg of sodium. Instead, avoid using table salt and opt for foods that are low sodium or sodium-free. A great alternative to salt is miso paste which has lower sodium levels and a similar taste.

beetroot supplements or red spinach supplements can boost nitric oxide | NutriGardens

The list of vitamins to avoid with high blood pressure is short, but there are plenty of herbs and minerals that can be avoided. Natural dietary supplements, such as a beetroot supplement or red spinach supplement, can safely be adopted for boosting nitric oxide in a healthy and sustainable way.




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