Antibiotics and Antiparasitics Without Prescription

How do these medicines work?

The principle is always the same: hit something the organism has and your own cells do not.

Bacteria have a rigid cell wall, which human cells lack entirely. Some antibiotics block its construction — the bacterium keeps growing, cannot complete the wall, and ruptures.

Others target the protein-building machinery. The bacterial version differs enough from ours to be blocked selectively.

Antiparasitic drugs take different routes again: disrupting a worm's energy metabolism, or paralysing its nervous system so it loses its grip and gets expelled.

Antifungals go after a building block fungal cell membranes need and human cells do not.

Finish the course. Every time.

The most important sentence on this page.

After two or three days the fever usually breaks and you feel more or less human. Stopping is tempting.

But feeling better only means the bacterial numbers have fallen far enough for your immune system to cope. Some are still alive — and they are the hardiest ones, the ones that held out longest.

Stop there and you leave exactly those behind. The infection returns, harder to treat. That is how resistance develops, one shortened course at a time.

Take the whole course. Even if you have felt fine for a week.

The gut gets caught in it

An antibiotic cannot distinguish a troublesome bacterium from a useful one, so your gut flora takes collateral damage.

Hence the diarrhoea, bloating and general unsettled feeling that accompany most of this class. Thrush is common too, since the yeast that is normaly outcompeted suddenly has space.

What helps: a probiotic during and after, taken a few hours apart from the antibiotic itself. Plain food, plenty of fluids.

Diarrhoea that is severe, watery, bloody or comes with fever is different and needs reporting rather than tolerating.

None of this works on viruses

Colds, flu, most sore throats, most coughs. All viral. An antibiotic has nothing there to attack.

It will not shorten the illness by an hour. It will upset your gut and push resistance along.

What does warrant a closer look: fever persisting beyond a few days, sudden worsening after you had started improving, severe one-sided pain, coloured discharge with fever, or breathlessness.

Worms: treat the whole household

With threadworms and similar parasites, treating one person almost guarantees a return visit.

Eggs travel on hands, bedding, door handles and toys. If the household is not treated together, it simply circulates.

• Everyone treated on the same day
• Bedding and underwear washed hot
• Nails short, hands washed before eating and after the toilet
• A repeat dose after an interval is frequently needed

That last point is common: the first dose deals with adult worms but not eggs, which is why schedules often include a repeat.

Things to watch

• Always declare antibiotic allergies, penicillin especially
• Some antibiotics must not be taken with dairy or calcium supplements
• Several make skin more sensitive to sunlight
• With some, alcohol is completly out
• Oral contraception can become less reliable

A widespread rash, facial swelling or breathing difficulty after a dose is urgent, not an ordinary side effect.

Ordering without prescription: how it works

When one of these is needed, it is usually needed promptly, which is why people order rather than postponing.

Pick the product, the strength and the pack size, enter a delivery address and confirm. A couple of minutes, any time of day, no queue and no conversation across a counter.

Everything goes out in plain packaging. No pharmacy name on the outside, nothing indicating what is inside. How long delivery takes depends on where the parcel is going.

On price, the factors are strength and pack size. Larger packs generally work out better per unit, which matters most for anything taken long term.

The outside of the parcel gives nothing away, wherever in the UK it is going. No pharmacy branding, no product name, nothing that suggests medication. For most customers that is the whole reason for ordering online.