True or False: All medicines for colds have stimulant effects.

The statement "All medicines for colds have stimulant effects" is false. Many cold medications contain ingredients that relieve symptoms such as congestion, coughing, and fever without having stimulant properties. For instance, some cold remedies include antihistamines, decongestants, and expectorants, which are primarily aimed at alleviating symptoms rather than stimulating the central nervous system.

Antihistamines, commonly included in cold medicine, can actually have sedative effects, making the user feel more drowsy rather than stimulated. Furthermore, not all cold medicines are designed to promote alertness or energy; many are intended to help manage symptoms and improve comfort during illness, thus demonstrating that it is not accurate to categorize all cold medicines as stimulants.