Apparently this substance helps with Bipolar I disorder, with and without mixed features. This substance, apparently, is also good for breast cancer.

**Mechanism of action:**  directly inhibits protein kinase C activity (which is increased in the manic phase of patients with bipolar I disorder) in the nervous system and subsequently helps to manage certain chemicals in the brain such as serotonin, norepinephrine and dopamine that control your mood.

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This substance is indicated in adults for the short-term (acute) treatment of manic episode (ups) with or without mixed features (both highs and lows at the same time) that happen with bipolar I disorder.

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* The most common possible side effects with endoxifen are headache, vomiting, trouble falling/staying asleep (insomnia).\*
* Other possible side effects are stomach upset (gastritis), upper abdominal (epigastric) discomfort, diarrhoea, restlessness, sleeping more than usual (somnolence) etc.