Review: could Synthroid cause Weight Gain?


Weight gain is found among people who take Synthroid, especially for people who are female, 60+ old , have been taking the drug for 10+ years, also take medication Lasix, and have Hypothyroidism . We study 89,159 people who have side effects while taking Synthroid from FDA and social media. Among them, 3,163 have Weight gain. Find out below who they are, when they have Weight gain and more.

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Synthroid has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. (latest outcomes from Synthroid 92,449 users)

Weight Gain

Weight gain has been reported by people with muscle aches, hair loss, oedema peripheral, memory loss, fatigue (latest reports from 74,828 Weight gain patients).

On Jul, 22, 2016

89,159 people reported to have side effects when taking Synthroid.
Among them, 3,163 people (3.55%) have Weight Gain

Number of reports submitted per year:

Could Synthroid cause Weight gain?

Time on Synthroid when people have Weight Gain *:

  • < 1 month: 7.58 %
  • 1 - 6 months: 14.44 %
  • 6 - 12 months: 5.78 %
  • 1 - 2 years: 11.19 %
  • 2 - 5 years: 12.27 %
  • 5 - 10 years: 11.19 %
  • 10+ years: 37.55 %

Gender of people who have Weight Gain when taking Synthroid *:

  • female: 89.65 %
  • male: 10.35 %

Age of people who have Weight Gain when taking Synthroid *:

  • 0-1: 0.04 %
  • 2-9: 0.23 %
  • 10-19: 0.9 %
  • 20-29: 3.08 %
  • 30-39: 6.94 %
  • 40-49: 19.84 %
  • 50-59: 27.32 %
  • 60+: 41.66 %

Severity if Weight Gain when taking Synthroid **:

  • least: 3.74 %
  • moderate: 57.94 %
  • severe: 29.91 %
  • most severe: 8.41 %

How people recovered from Weight Gain **:

  • while on drug: 0.0 %
  • after off the drug: 13.51 %
  • not yet: 86.49 %

Top conditions involved for these people *:

  • Hypothyroidism (472 people)
  • Depression (238 people)
  • Thyroid Disorder (158 people)
  • Hypertension (150 people)
  • Osteoporosis (138 people)

Top co-used drugs for these people *:

  • Lasix (326 people)
  • Lipitor (307 people)
  • Lyrica (217 people)
  • Premarin (213 people)
  • Zoloft (199 people)

* Approximation only. Some reports may have incomplete information.

** Reports from social media are used.

How to use the study: print a copy of the study and bring it to your health teams to ensure drug risks and benefits are fully discussed and understood.

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