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Vyvanse (lisdexamfetamine dimesylate)

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Old 11-01-08, 04:11 AM
dJMacPro dJMacPro is offline

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Vyvanse - Heart beating really fast when I lie down?

I've been taking Vyvanse for a few weeks. I notice my heart rate is a little faster, but nothing too crazy.

For some reason though, when I lie on my back, I can really feel my heart pounding.

I noticed this the first time I did yoga after taking Vyvanse (about 7 hours earlier), during corpse pose. I just feel extremely uncomfortable lying on the ground, like my heart is beating way too hard. It's at the point where I literally can't lie down with my hands to my side for more than 30 seconds.

If I'm not lying down though I barely notice any change in my heart rate.

Anyone else have this? Try lying on the ground (without a pillow) and see if it happens. Is it just me?
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Old 11-03-08, 12:21 AM
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Pink Sunset Pink Sunset is offline

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Re: Vyvanse - Heart beating really fast when I lie down?

Stimulants do have cardiac effects, some normal and manageable, but if you are uncomfortable with it, you should get it checked out.

I take vyvanse and do have periods where I feel my heart beating. It is not a faster then normal beat, but a harder than normal beat. I think a 'palpitation' can be defined as both. ( fast or hard). I do feel this mostly when I am at rest. Palpitations should be evaluated by a doctor.

I have personally not mentioned it to my doc because I had this before starting a stimulant, so it is not a 'change' for me. If it is a change for you, then call your prescribing doctor.

btw, lying flat brings yout heart closer to the chest wall making it easier to feel changes. Feeling it only while lying down does not mean you only have changes when lying down. Or your blood pressure is changing while in this prone position....anyway, have your b/p checked and have your md or np take a good listen to your heart.
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