Natural thyroid supplements such as seaweed or kelp based products are available for people looking to improve their thyroid function. If your thyroid is not working properly you may see yourself gaining weight or you may experience the feeling of being tired all the time. Thyroid supplements help battle these effects by promoting the proper function of your thyroid and therefore reducing the negative effects of a thyroid that is not working the way it should. Using supplements to give your thyroid a boost will result in better health overall and you may see an increase in energy and weight loss.