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.
The Roman chamomile essential oil has a sweet, apple-like fragrance and is very light clear blue in color with a watery viscosity, while the German chamomile oil has a sweet, straw-like fragrance, is dark blue in color and its viscosity is medium.oth chamomile oils are extracted from the flowers by steam distillation, with the Roman chamomile yielding about 1.7 % from fresh flowers and German chamomile yielding about 0.2 - 0.4 %.