Before taking ranitidine, tell your doctor if you are taking triazolam (Halcion). You may
not be able to use ranitidine, or you may need dosage adjustments or special tests during
treatment.
There may be other drugs that can interact with ranitidine, or be affected by ranitidine.
Tell your doctor about all the prescription and over-the-counter medications you use. This
includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start
using a new medication without telling your doctor.
Stop using ranitidine and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face,
lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
chest pain, fever, feeling short of breath, coughing up green or
yellow mucus;
easy bruising or bleeding, unusual weakness;
fast or slow heart rate;
problems with your vision;
fever, sore throat, and headache with a severe blistering,
peeling, and red skin rash; or
nausea, stomach pain, low fever, loss of appetite, dark
urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
Less serious side effects may include:
headache (may be severe);
drowsiness, dizziness;
sleep problems (insomnia);
decreased sex drive, impotence, or difficulty having an
orgasm; or
swollen or tender breasts (in men);
nausea, vomiting, stomach pain; or
diarrhea or constipation.
This is not a complete list of side effects and others may occur. Tell
your doctor about any unusual or bothersome side effect.
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