Tadalafil vs Sildenafil: the weekend tablet or the classic — which fits how you live?
The short answer
They work the same way; the difference is timing. Sildenafil (Viagra-style) lasts four to six hours and is cheap and everywhere. Tadalafil (Cialis-style) lasts up to 36 hours — and a small daily dose removes scheduling from the equation entirely. Neither mixes with nitrate heart medicines, and both are heavily counterfeited in Nigeria, so verify before you buy.
Both belong to the same family (PDE5 inhibitors) and neither causes an erection by itself — they amplify the response to normal arousal. Sildenafil is the older molecule: it kicks in within about an hour, works best away from heavy or oily food, and fades after four to six hours. Tadalafil is slower to peak but stays active for up to a day and a half, which is why it earned the 'weekend pill' name, and food barely affects it.
In the Nigerian market the practical concerns are as important as the pharmacology. These are among the most faked medicines sold here — bought from hawkers or unregistered shops, the blue tablet may contain anything. Buy from a licensed pharmacy, check the NAFDAC number, and if you use any nitrate-based heart medicine (or have serious heart disease), these drugs are off the table until a doctor says otherwise.
Side by side
| Tadalafil | Sildenafil | |
|---|---|---|
| How long it lasts | Up to 36 hours | About 4–6 hours |
| Food interaction | Minimal | Heavy/oily meals blunt and delay it |
| Daily low-dose option | Yes — removes timing altogether | No |
| Common side effects | Back ache, muscle ache, flushing | Headache, flushing, blue-tinged vision |
| Drug class | PDE5 inhibitor | PDE5 inhibitor |
| Typical price | ₦77,000–₦108,000 online (median ₦98,090, July 2026) | ₦7,250–₦28,330 online (median ₦9,520, July 2026) |
| NAFDAC registrations | 17 active Greenbook listings | 41 active Greenbook listings |
| Common brands | Cialis | Viagra |
Prices are sampled from licensed Nigerian online pharmacies and span brands and pack sizes — indicative only. Registration counts are from our copy of the NAFDAC Greenbook (July 2026); listings can lag renewals.
Reach for Tadalafil when…
- •You don't want to schedule intimacy around a tablet
- •Meals around the moment are unpredictable
- •A daily low-dose routine suits you (also used for prostate symptoms)
Reach for Sildenafil when…
- •Occasional use, planned in advance
- •You want the cheapest genuine option — sildenafil generics abound
- •You've used it before and it works for you
Frequently asked questions
Educational comparison, not a prescription. Both medicines have full guides covering dosage, side effects, and warnings — talk to a pharmacist or doctor before switching. Updated July 2026.