Less common
Chills
cough
diarrhea
fever
general feeling of discomfort or illness
headache
joint pain
loss of appetite
muscle aches and pains
nausea
runny nose
shivering
sore throat
sweating
trouble sleeping
unusual tiredness or weakness
vomiting
Rare
Abdominal or stomach pain
blistering, itching, peeling, or redness of skin
bloody or cloudy urine
clay-colored stools
convulsions
dark urine
difficult, burning, or painful urination
dizziness
frequent urge to urinate
muscle spasm or jerking of all extremities
rash
sudden loss of consciousness
unpleasant breath odor
vomiting of blood
yellow eyes or skin
Symptoms of overdose
Blurred vision
confusion
convulsions
disorientation
dizziness
drowsiness (severe)
faintness or lightheadedness when getting up from a lying or sitting position
fast, pounding, or irregular heartbeat or pulse
hyperexcitability
loss of consciousness
palpitations
sweating
unusual tiredness or weakness

Prophylactic treatment of bronchial asthma. Symptomatic treatment of allergic conditions including bronchitis, rhinitis, hay fever and urticaria.