Antidiabetic (Short-acting insulin)
Last reviewed July 2026
Who is this for?
Insulin regular (human) is a man-made version of the insulin your body naturally produces. It helps move sugar from your blood into your cells where it is used for energy, thereby lowering your blood sugar levels.
Binds to insulin receptors on muscle, fat, and liver cells, activating intracellular signalling pathways that promote glucose uptake and utilisation while inhibiting hepatic glucose production and lipolysis.
Diabetes (sugar disease), used mainly for Type 1 diabetes and Type 2 diabetes when tablets alone are not enough to control blood sugar
Prescription Required
You need a doctor's prescription to buy this drug.
Explore this drug
If you miss a dose, check your blood sugar as soon as you remember. Take your insulin if your blood sugar is high and you are about to eat, but do not take a double dose to make up for it. If you are unsure, call your doctor or pharmacist for guidance.
Always buy your insulin from a reputable pharmacy, as insulin sold by roadside vendors or stored outside a fridge may be spoiled and dangerous. Learn to recognize the signs of low blood sugar (shakiness, sweating, confusion) and always carry sugar, sweets, or a sugary drink with you. Do not share insulin pens or needles with anyone, even family members, as it can spread infections.
Some medicines like prednisolone (steroids) and some water tablets (diuretics like hydrochlorothiazide) can raise your blood sugar and reduce how well insulin works. Alcohol can cause your blood sugar to drop dangerously low, especially if you have not eaten, so avoid drinking or drink very carefully. Blood pressure drugs like atenolol (beta-blockers) can hide the warning signs of low blood sugar, so be extra careful.
Check your specific combination
Is it safe to take Insulin with your other drugs?
Insulin regular is generally considered safe during pregnancy and breastfeeding, but your dose will likely need to be adjusted. Always work closely with your doctor throughout.
Store unopened vials and cartridges in a refrigerator (2–8°C), not in the freezer. Once opened, it can be kept at room temperature (below 25°C) for up to 4–6 weeks depending on the brand, but keep it away from direct sunlight and heat, as Nigerian weather can spoil insulin quickly. Never leave insulin in a hot car or near a window. 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
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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.