The question is of course, whether you need it or not.

Thyroid support is needed for people with under-active thyroid. Hypothyroidism, also called under-active thyroid, is a condition in which the thyroid gland doesn't produce enough thyroid hormone to regulate the needs of the body.

What are the Symptoms of Hypothyroidism?

•          Abnormal menstrual cycles, increased menstrual flow  
•          Coarse, dry hair, nails, hair loss  
•          Cold intolerance , low body temperature 
•          Constipation 
•          Decreased libido 
•          Decreased metabolic rate 
•         Depression 
•         Dry, rough pale skin 
•         Elevated cholesterol 
•         Fatigue and insomnia 
•         Hoarseness 
•         Irritability 
•         Memory loss 
•         Muscle cramps and frequent muscle aches, aching muscles 
•         Poor concentration 
•         Poor coordination 
•         Reduced rate of breathing 
•        Slow heart rate
•         Swollen eyelids 

If you have these symptoms, please discuss them with your doctor.

Each individual  may have any number of the above mentioned  symptoms, and they will vary with the severity of the thyroid hormone deficiency.

You may have one of these symptoms as your main complaint, while another will not have that problem at all and will be suffering from an entirely different symptom. Most people will have a combination of these symptoms. Occasionally, some patients with hypothyroidism have no symptoms at all, or they are just so subtle that they go unnoticed. 

Additionally, you may need to seek the skills of an endocrinologist.  If you have already been diagnosed and treated for hypothyroidism and continue to have any or all of these symptoms, you need to discuss it with your physician. 

Take a look at your fingernails

No moons: Underactive thyroid;

Longitudinal ridges:Aging, poor absorption of vitamins and minerals; thyroid disease; kidney failure.