Many digoxin side effects are dose dependent and happen when blood levels are over the narrow therapeutic range. Therefore, digoxin side effects can be avoided by keeping blood levels within the therapeutic level. Serious side effects associated with digoxin include: 1  heart block, 2  rapid heartbeat, and. 3  slow heart rate.
In others, like Christianity, the white horse is a symbol of death. The horse is a universal symbol of freedom without restraint, because riding a horse made people feel they could free themselves from their own bindings. Also linked with riding horses, they are symbols of travel, movement, and desire.
A bull represents power, authority or brute strength. Being white indicates purity or singularity of purpose. Depending on what your bull was doing this could be something you need to do yourself, if it was passive it could be a call to take the bull by the horns and just do it. (whatever IT is)