Can I consume aloe vera juice if I'm on toprol (metoprolol) and Synthroid daily?

Consult this stie. For drug interactions between aloe vera and medications. It will be a good idea to tell your doctor about all drugs, including over the counter medications, that you take, http://www.Nlm.Nih.Gov/medlineplus/druginfo/natural/607.Html.
Yes. In small doses most people should be able to take this without any problems, there are no known interactions that i know of or could find. But as always, when you change medications you should monitor things especially closely, like your blood pressure and thyroid function tests. Symptoms like these deserve a full evaluation in person by your health care provider.