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Thyroid hormone synthesis support; Metabolic function; Nervous system support
Adults with busy routines seeking nutrient support for metabolic and nervous system demands or those with low dietary intake of iodine-rich foods.
Take 1 capsule twice daily with food and water; taking with meals may improve mineral tolerance.
May contain traces of crustaceans.
Iodine is required to form thyroid hormones T3 and T4, which influence metabolic activity throughout the body.
Caution: Those with thyroid conditions or high iodine intake from diet should be mindful of total iodine, as excessive amounts may affect thyroid hormone balance.
L-tyrosine provides the amino acid backbone for thyroid hormone synthesis and for neurotransmitters involved in stress response.
Caution: May affect alertness; avoid taking late in the day if sensitive and consult a professional if using stimulants or thyroid medication.
Selenium-dependent enzymes help convert thyroid hormone T4 into the more active T3 and protect thyroid tissue from oxidative stress.
Caution: High intakes from multiple supplements may lead to unwanted effects such as gastrointestinal upset; keep total selenium within recommended limits.
Zinc acts as a cofactor for enzymes involved in thyroid hormone production and receptor function.
Caution: Can cause stomach discomfort on an empty stomach and may interact with certain antibiotics; separate dosing if needed.
Forskolin activates cellular cAMP signalling, which is studied for its role in metabolic pathways and thyroid gland activity.
Caution: May lower blood pressure and increase heart rate; use caution if sensitive or using medications affecting blood pressure.
Iodine and L-tyrosine provide the raw materials for thyroid hormone construction, while selenium and zinc assist enzymatic steps involved in hormone activation and receptor function. Coleus forskohlii influences cellular signalling that relates to metabolic activity, complementing the nutrient cofactors.
Label Warning: For adults only. Avoid use if pregnant or breastfeeding, or if you have or have had low blood pressure, a blood clotting disorder, or gastric ulcers. Do not use with prescription medicines, especially blood pressure medicines, anticoagulants, or asthma medicines. Stop use two weeks before surgery.
Who should be cautious: People with thyroid conditions or on thyroid medicines, as iodine and L-tyrosine may affect thyroid function. Those with sensitivities to crustaceans should be cautious due to possible traces. People with cardiovascular concerns or on blood pressure medicines should seek advice. People on anticoagulants should use caution. People with gastrointestinal issues, especially ulcers, should be careful. Consult a healthcare provider before combining with medications if you use minerals like magnesium or zinc that may affect absorption of certain medicines.
Storage: Store in a cool, dry place.
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Combining L-Tyrosine with ashwagandha may support stress resilience and mental clarity, offering a holistic approach to stress management.
AI generated. Not medical advice.
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Thyroid hormones regulate metabolism and play a significant role in growth, cell reproduction, and nerve function. Swanson Thyroid Essentials provides ultimate thyroid gland nourishment with specialised ingredients like standardised Coleus forskohlii, a little-known but powerfully beneficial herb, and recognised thyroid supporters like iodine, zinc, copper and B vitamins.
As a dietary supplement, take one capsule twice a day with food and water.
Rice flour, gelatin, magnesium stearate.
May contain traces of crustaceans.
For adults only. Do not take this product if you are pregnant or breastfeeding, or if you have or have had low blood pressure, a blood clotting disorder, or gastric ulcers. Do not take this product if you are taking prescription medications, especially for blood pressure, anticoagulants, or asthma medications. Discontinue use two weeks before surgery. Keep out of the reach of children. Do not use if the seal is broken. Store in a cool, dry place.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally be despatched with alternative packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and do not rely solely on the information provided by iHerb. This website has been machine translated as a courtesy to customers. iHerb does not represent or warrant that the translations are complete or error-free and iHerb is not responsible for any translation errors or omissions.
| Supplement information | ||
| Serving Size: 1 Capsule | ||
| Amount Per Serving | %Daily Value* | |
| Thiamin (from thiamin mononitrate)(vitamin B1) | 25 mg | 2,083% |
| Riboflavin (vitamin B2) | 25 mg | 1,923% |
| Niacin (as niacinamide) | 25 mg NE | 156% |
| Vitamin B6 (from pyridoxine HCL) | 25 mg | 1,471% |
| Folate | 40 mcg DFE (25 mcg folic acid) | 10% |
| Vitamin B12 (as cyanocobalamin) | 25 mcg | 500% |
| Pantothenic Acid (from calcium pantothenate) | 25 mg | 500% |
| Iodine (from kelp) | 100 mcg | 67% |
| Magnesium (from magnesium oxide) | 25 mg | 6% |
| Zinc (from zinc oxide) | 25 mg | 227% |
| Selenium (from selenomethionine) | 50 mcg | 91% |
| Copper (from copper gluconate) | 2 mg | 222% |
| L-Tyrosine | 150 mg | * |
| Coleus forskohlii (standardised to 10% forskolin)(root) | 50 mg | * |
| *Daily Value not established. | ||
