Symptoms of an overactive thyroid gland are generally symptoms of an increased metabolism. These can include weight loss, nervousness or anxiety, irritability, a racing heart, increased bowel movements, sweating, sleeplessness, hand tremors, and muscle weakness.1  Previous.2  Continue.n addition to fatigue and weight gain, symptoms can include depression, constipation, sluggishness, dry skin and dry hair, and muscle cramps. Some people develop an enlarged thyroid, which leads to a swelling in the front of the neck known as a goiter.. 1  Previous.
Examples of oils containing Phenols â Wintergreen, Anise, Birch, Clove, Basil, Tarragon, Fennel, Oregano, Thyme, Mountain Savory, Peppermint, Tea Tree, Calamus, Cinnamon Bark, Citronella, Marjoram, Nutmeg, Eucalyptus citriodora, Parsley, Ylang Ylang. These all contain greater than 8% phenols.
An essential oil is a concentrated hydrophobic liquid containing volatile aroma compounds from plants. Essential oils are also known as volatile oils, ethereal oils, aetherolea, or simply as the oil of the plant from which they were extracted, such as oil of clove.