This medication passes into breast milk and may have undesirable effects on nursing infant. SIDE EFFECTS: Side effects include dry mouth, blurred vision, confusion, agitation, increased heart rate, heart palpitations, constipation, difficulty urinating, and occasionally seizures can occur. We comply with the HONcode standard for trustworthy health information. Investigate any tachycardia before administration of dicyclomine hydrochloride, since it may increase the heart rate. Do not use Dicyclomine if it contains particles, is cloudy or discolored, or is dicyclomine a narcotic if the vial is cracked or damaged. Do not start using new medication without telling your doctor. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects.