Why do bronchodilating drugs (such as albuterol) cause rapid pulse, nervousness and anxiety even when used as directed?

Common side effects: The name of bronchodilators is beta2agonists. The common side effect is a palpitation, also common tremor, sweating and agitation. The medicine dilates vessels and stimulates the heart. If you use it too often the side effect is more prominent.

Side effects: This type of medication stimulates beta-2 adrenergic receptors. This type of stimulation causes beneficial effects such as bronchodilation, but it also effects many other areas of the body and causes the side effects you describe.

That's what they do: The medications you mention do that as part of their intended action. That's how dilation works. It's not an Asthma cure, but rather symptom relief. It mimics the release of adrenaline effects on our body that increase heart rate and breathing capacity to allow us to fight or flee is what it does. The tightness opens, but our heart also races and it's like we're being threatened. OK?