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Thyrin 2525mcg

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Square Pharmaceuticals PLC.
Generic: Levothyroxine Sodium
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descriptionSafety Advices
Consuming alcohol with Thyrin 25 does not cause any harmful side effects.
Thyrin 25 is safe to use during pregnancy. Most studies have shown low or no risk to the developing baby.
Thyrin 25 is safe to use during breastfeeding. Human studies suggest that the drug does not pass into the breastmilk in a significant amount and is not ... View More
Thyrin 25 does not usually affect your ability to drive.
There is limited information available on the use of Thyrin 25 in patients with kidney disease. Please consult your doctor.
There is limited information available on the use of Thyrin 25 in patients with liver disease. Please consult your doctor.
descriptionMedical Overview


Thyrin 25 is a medicine used to treat an underactive thyroid gland (hypothyroidism). It replaces the hormone which was not being produced by your thyroi... View More

Uses of Thyrin 25

  • Hypothyroidism

Side effects of Thyrin 25

  • Palpitations
  • Vomiting
  • Anxiety
  • Diarrhea
  • Flushing (sense of warmth in the face, ears, neck and trunk)
  • Weight loss
  • Nervousness
  • Restlessness

How to use Thyrin 25

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Thyrin 25 is to be taken e... View More

How Thyrin 25 works

Thyrin 25 is a synthetic version of a hormone produced by the thyroid gland. It works by replacing the thyroid hormones that your thyroid gland cannot p... View More

What if you forget to take Thyrin 25?

If you miss a dose of Thyrin 25, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your... View More

quick tipsQuick Tips
  • Thyrin 25 should be taken on an empty stomach (ideally, first thing in the morning). No food, milk, or tea should be taken 1 hour before and 2 hours aft... View More
  • It may take 6 to 8 weeks to get the full effect.
  • For most people, Thyrin 25 can be a lifelong medication. Do not discontinue it without discussing your doctor.
  • Inform your doctor if you have diarrhea, nervousness, irritability, sleep disturbances, shaking hands, or chest pain. Your doctor may adjust your dose.
  • Leave a gap of at least 4 hours before taking any antacids, calcium or iron supplements, and multivitamins, as these may interfere with the effect of th... View More
  • Get your hormone levels checked regularly and inform your doctor if you notice a significant change in your body weight. The dose may need to be adjuste... View More
  • Inform your doctor before changing the brand of Thyrin 25 as all brands may not have the same effect.
descriptionBrief Description


Hypothyroidism, TSH suppression, Myxoedema coma


Should be taken on an empty stomach with full glass of water. Take on an empty stomach ½-1 hr before meals.

Adult Dose

Oral Mild Hypothyroidism 1.7 mcg/kg or 100-125 mcg PO qDay; not to exceed 300 mcg/day >50 years (or <50 yr with CV disease) Usual initial dose: 2... View More

Child Dose

Oral Hypothyroidism Age 1-3 months 10-15 mcg/kg/day PO Use lower starting dose (25 mcg/day) if patient at risk of cardiac failure; if initial serum... View More


Untreated hyperthyroidism; uncorrected adrenal failure; recent MI.

Mode of Action

Levothyroxine Na is a synthetic form of thyroxine which increases the basal metabolic rate (BMR) and the utilisation and mobilisation of glycogen stores... View More


Patients w/ CV (e.g. angina, heart failure, HTN), DM and diabetes insipidus, epilepsy, pre-existing myasthenia syndrome, long-standing hypothyroidism. E... View More

Side Effect

Nervousness, excitability, tremor, muscle weakness, fatigue, cramps; sweating, flushing, heat intolerance, headache, fever, insomnia, tachycardia, palpi... View More


Reduced absorption w/ iron, antacids, bile acid sequestrants, colestyramine, simeticone, Ca carbonate, sucralfate, cation exchange resins. Reduced tri-i... View More

Alternative brand for Thyrin 25
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The information provided herein is accurate, updated and complete as per the best practices of the Company. Please note that this information should not... View More

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