{"id":55179,"date":"2025-08-26T14:29:22","date_gmt":"2025-08-26T12:29:22","guid":{"rendered":"https:\/\/nathyroid.fr\/hypothyroidie-levothyroxine\/"},"modified":"2026-03-02T15:51:08","modified_gmt":"2026-03-02T14:51:08","slug":"hypothyroidism-levothyroxine","status":"publish","type":"page","link":"https:\/\/nathyroid.fr\/en\/hypothyroidism-levothyroxine\/","title":{"rendered":"Learn more about the thyroid"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\t\t\"levothyroxine\"\t\t\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tThe thyroid is often described as the body\u2019s thermostat\t\t\t<\/h1>\n\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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An underactive thyroid may cause signs linked to a slowed metabolism: chronic fatigue, sensitivity to cold, weight gain, loss of energy, mental confusion, paleness, swelling of the neck and face, sleep disorders, increased hair loss, dry skin, constipation, slower heart rate, hearing disorders, decreased libido, and more generally anything resulting from reduced metabolic activity.<\/p>

An overactive thyroid may cause signs of hypermetabolism such as: hyperthermia, sweating, nausea, accelerated transit, weight loss.<\/p>

In women, thyroid imbalances often occur during pregnancy, childbirth and menopause.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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The role of environmental factors<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Thyroid balance is very sensitive to our environment. What we eat, our physical activity, stress level, sleep, and even where we live are all factors that influence and may disturb the fragile balance of thyroid function.<\/p>

Thyroid function is regulated by the hypothalamic-pituitary axis located at the base of our brain. The pituitary gland secretes a mediator called Thyroid Stimulating Hormone (TSH), which activates the secretion of thyroid hormones T4 and T3 according to needs. T4 (levothyroxine) is the storage form of thyroid hormones; it is in fact a prohormone. It is then converted into triiodothyronine (T3), which is the active form used to stimulate the activity of our cells.<\/p>

Thyroid function can be monitored by measuring blood TSH levels. Normal TSH values are between 0.4 and 4 mIU per litre of blood. Blood T4 and T3 levels may also be measured. A thyroid assessment is always interpreted by a doctor.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\"levothyroxine\"\t\t\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The value of food supplements for well-being<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The thyroid is one of the most important endocrine glands because it regulates all energy activity in the body\u2019s cells. When the thyroid is underactive, both body and mind can struggle to function properly. It is therefore very important to take the greatest care of it, as it plays a major role in our daily well-being.<\/p>

Diagnosis by a healthcare professional is essential to measure your TSH. However, you may feel the first signs of slowed thyroid function without your doctor considering it necessary to prescribe hormonal treatment.<\/p>

At this stage, the intake of nutrients essential to its proper function and an improvement in lifestyle habits may sometimes be sufficient to restore balance.<\/p>

However, diet alone is often not enough to provide all daily requirements, so it is advisable to ensure a daily intake of essential nutrients through food supplements.<\/p>

Laboratoire PAPILLON<\/a> therefore created NATHYRO\u00cfD<\/a>, a food supplement that combines in one product a set of naturally derived ingredients recognised for their beneficial effects on thyroid function*.<\/p>

Food supplements must be used as part of a healthy lifestyle and should not be used as substitutes for a varied and balanced diet.<\/p>

NATHYRO\u00cfD<\/a> is a nutritional supplement and is not intended to replace treatment with synthetic thyroid hormones (levothyroxine). Speak to your doctor. If used in addition to such treatment, it is important to allow a minimum interval of 2 hours between taking the medicine and the food supplement due to the presence of iron in NATHYRO\u00cfD<\/a> which could alter levothyroxine absorption if taken at the same time.<\/p>

*Selenium and iodine contribute to normal thyroid function.
**Indian Myrrh extract (Guggul) supports a good balance of thyroid hormones.<\/i><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"NATHYRO\u00cfD\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Find out how NATHYRO\u00cfD<\/strong> can help you<\/span><\/p><\/div>\n\t\t\t

\n\t\t\tFind out more<\/span><\/a>\t<\/div>\n\t<\/div>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

The thyroid is often described as the body\u2019s thermostat An underactive thyroid may cause signs linked to a slowed metabolism: chronic fatigue, sensitivity to cold, weight gain, loss of energy, mental confusion, paleness, swelling of the neck and face, sleep disorders, increased hair loss, dry skin, constipation, slower heart rate, hearing disorders, decreased libido, and […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-full-width.php","meta":{"footnotes":""},"class_list":["post-55179","page","type-page","status-publish","hentry"],"yoast_head":"\nLevothyroxine and food supplements<\/title>\n<meta name=\"description\" content=\"Treatment for hypothyroidism is generally based on synthetic thyroid hormones, most often levothyroxine (T4).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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