Oil of Oregano Side Effects
Here then are some of the adverse side effects that can be expected if this oil is administered wrongly or used carelessly.

• It inhibits the absorption of iron. Those who are taking iron supplements should consult their physicians before using this oil. Pregnant women, therefore, should be careful because they need an ample supply of iron for their growing fetus.
• It has a potential to be toxic if taken excessively. The thymol content of oregano oil can be toxic at high doses therefore you should only use oregano oil made from Origanum vulgare, which contains the right amount of thymol, and start with small doses to give your body time to adjust.
• It can cause allergic reactions. The source of oregano oil is a plant that belongs to the plant family of mint, thyme, sage, basil, marjoram and hyssop. If you are allergic to any of these herbs, it is better to avoid this oil. Some of the allergic reactions are skin rash, facial swelling, difficulty in swallowing, breathing and speaking, and itchiness of the skin. Those with sensitive skin who still wants to use oregano oil can dilute the oil before using it, either topically or internally.
• It can result in die-off effects. Using oil of oregano will kill microorganisms in your body that do not belong there. If there is massive die-off, you can experience nausea, dizziness and headache. But this can be mitigated by drinking several glasses of water after taking oregano oil.
• It can cause digestive problems when taken in concentrated form. Therefore, it is important to dilute the concentrated oregano oil with a carrier oil such virgin olive oil or virgin coconut oil.
• It can cause burning sensation in the eyes if the oil gets into them.
• It can cause irritation in the mucous membranes and especially the genital areas if applied topically in undiluted form.
• It can act as a blood thinner. Therefore those who have health problems that require them to take anticoagulants should refrain from taking oil of oregano. It can unduly increase the anticoagulant activity inside the body that can aggravate the condition further.
• It can cause a tingling sensation in the mouth if taken orally in concentrated form. But this only last about a minute and is completely normal.
• It may raise blood pressure in some people. However, the pressure will return to normal after discontinuing the administration of the oil, or taking a lower concentration.
• It can have interactions with other medications. Some studies have found that it can amplify the effects of some medications, such as supplementation of hormones, anti-diabetic medications, birth control pills and hormone replacement therapy. However, more studies are needed to document the dangers of these interactions

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