Dimetapp Paediatric Elixir is contra-indicated in patients sensitive to any of the ingredients and in infants or neonates. It should not be given to patients whose sensitivity to small doses of sympathomimetic substances is manifested by sleeplessness, dizziness, light headaches, weakness, tremulousness or cardiac arrhythmia.
In fact, worrying (or anxiety) can stimulate the release of epinephrine into your system, whereby it will bind with your beta-adrenergic receptors in your liver, causing your blood vessels to constrict and your blood pressure to rise, along with your heart rate (pulse).
a. Two basic types of epinephrine receptors -- called alpha and beta adrenergic receptors (adrenergic = for adrenaline). The two types are distinguished (primarily) by their relative affinities for epinephrine (adrenaline) and norepinephrine (noradrenaline).n example -- effects of epinephrine (adrenaline) on smooth muscle. Some smooth muscles relax, and some contract in response to epinephrine. In this case, different receptors & 2nd messengers are involved.