Herbs, Spices and Natural Supplements can offer health benefits but just because something is natural doesn’t necessarily mean that it is safe to use or take in large quantities.
Herbs, Spices and Natural Supplements can have side effects, interactions with other foods and medications or simply may not work as intended. Be sure to consult with your doctor, nutritionist or appropriate health care professional before using Herbs, Spices and Supplements and be careful to follow recommended dosage guidelines.
I personally had a bad experience with senna tea (a natural tea known for its laxative effects) after drinking only 1 cup. I experienced an erratic and extremely elevated heart beat (most likely due to electrolyte imbalances and fluid loss) and almost ended up hospitalized. That taught me the importance of carefully researching foods and their side effects and contra-indications before taking them.
As with everything else, consult with your doctor before using Herbs, Spices and natural Supplements and always use common sense.
And keep in mind the old adage ” too much of anything is not good for you…”
Life with Frank 
I agree. Thank you so much for bringing this up.