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Are heart palpitations and tachycardia recognised side effects of methotrexate?

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mark33043
mark33043

I started on methotrexate for psoriatic arthritis in March and was seeing greatly reduced inflammation by August. 15mg per week increased to 20mg in August. However, started getting tachycardia and palpitations in September, and general PoTS-like symptoms (elevated heart rate on standing). Could this be a side effect of methotrexate? Both Rheumatologist and Cardiologist have dismissed it as a possibility...does anyone have any experience of this, or can point to any definitive guidance? Thanks.

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