Bronchodilator (airway opener)
Brand of Aminophylline
Last reviewed June 2026
Who is this for?
Aminophylline is a medicine that relaxes and opens up the airways in your lungs, making it easier to breathe. It works by relaxing the muscles around your air passages and reducing swelling inside them.
Inhibits phosphodiesterase enzymes, increasing intracellular cyclic AMP levels and promoting smooth muscle relaxation in the airways. Additionally, acts as a non-selective adenosine receptor antagonist, further contributing to bronchodilation and improved airflow.
Prescription Required
You need a doctor's prescription to buy this drug.
Explore this drug
Adults usually take 100–300 mg by mouth 3 to 4 times a day, or as your doctor prescribes. Take it with food or a glass of water to reduce stomach upset. Do not crush or chew the tablets — swallow them whole. Your doctor may adjust your dose based on how your body responds, so follow their instructions carefully.
If you miss a dose, take it as soon as you remember. But if it is almost time for your next dose, skip the missed one and continue your normal schedule. Never take two doses at once to make up for a missed dose — this drug can be dangerous in high amounts.
Aminophylline has a very narrow safe dose range — a small increase can cause serious side effects, so never take more than your doctor prescribed. Do not buy aminophylline from roadside vendors or unregistered pharmacies, as fake or expired products are common and can be very dangerous. If you feel your heart racing, have tremors, or start vomiting after taking it, stop and see a doctor immediately.
Avoid drinking too much coffee, tea, kola nut, or energy drinks — they contain caffeine which can increase side effects like fast heartbeat and restlessness. Erythromycin and ciprofloxacin (common antibiotics in Nigeria) can increase aminophylline levels in your blood to dangerous amounts, so tell your doctor if you are taking them. Smoking tobacco or marijuana can reduce how well aminophylline works, so inform your doctor if you smoke.
Check your specific combination
Is it safe to take Aminophylline with your other drugs?
Aminophylline is not considered safe to use freely during pregnancy or breastfeeding — always consult your doctor before taking it if you are pregnant, planning to become pregnant, or breastfeeding.
Store in a cool, dry place away from direct sunlight and heat — Nigerian weather can be very hot, so avoid leaving it in your car or near windows. Keep the tablets in their original container and always keep out of reach of children.
For information only — not medical advice. Always talk to a doctor or pharmacist before changing your medication.
Names this drug is sold under — especially in Nigerian and West African pharmacies
Counterfeit Drug Warning
Fake drugs are a serious problem in Nigeria. Always buy from a registered pharmacy. If the packaging looks different from what is described above, do not use it.
Genuine packaging for Aminophylline 100 mg Tablet
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NAFDAC Number
A4-9071
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