St. John's wort is perhaps one of the most popular herbs available over the counter and scientists are still unsure about how it works in treating minor depression. They know it works, but they don't yet know how. One of the largest concerns surrounding herbal medicines is how they might interact with other drugs. And the fact is, over 60 percent of people who use alternative treatments are not telling their doctors about them. Whether you take aspirin in the morning, vitamin C at lunch or Valerian at night, your doctor needs to know to help prevent a possible interaction with other drugs.
Some people are at more risk than others.
If you take three or more medications for chronic conditions, suffer from diabetes, hypertension, depression or are elderly, you should be on the lookout for a possible drug-herb interaction. It has been known to increase blood pressure. Consuming caffeine with ginseng increases the risk of overstimulation, which could either result in insomnia or an upset stomach. Ginseng may cause menstrual abnormalities and breast tenderness, therefore it is not recommended for pregnant or lactating women. Garlic , Allium sativum, is more than a good flavoring in your favorite meal.