Pharmacy knowledge base
Health guides & medicine information
Plain-English explainers from our editorial team — what the medicines do, how the strengths differ, and how to use them safely.
Showing 121–132 of 287 guides
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Exercise and Erectile Dysfunction: How Movement Helps
Summary: Regular exercise helps erections by strengthening the heart, keeping blood vessels flexible and boosting nitric oxide. It also improves weight, blood pressure, cholesterol and blood sugar. Aerobic activity such as brisk walking, cycling or swimming has the most consistent link to better erectile function, supported by strength training and pelvic floor exercises. Moderate activity most days is enough.
Erectile Dysfunction and Mental Health
Summary: Stress, anxiety and depression can all cause or worsen erectile dysfunction, because a tense or low mind disrupts arousal signals. In younger men they are often the main cause. ED can also feed low mood, creating a cycle. Some antidepressants affect erections, but never stop one without talking to your doctor.
Performance Anxiety and Erectile Dysfunction
Summary: Performance anxiety, the worry that you won't perform during sex, can stop an erection in a perfectly healthy body. Anxiety triggers a 'fight or flight' response that diverts blood away from the penis. It is one of the most common causes of ED in younger men. Reducing pressure, open communication and therapy can break the cycle.
Erectile Dysfunction by Age: What to Expect Through the Decades
Summary: Erectile dysfunction becomes more common with age, but it is never just inevitable. In your 20s and 30s it is most often psychological; from your 40s, blood pressure, cholesterol, weight and blood-vessel changes increasingly play a part. At any age, persistent ED deserves a check-up because it can signal heart or hormonal problems.
Premature Ejaculation: A Practical Overview
Summary: Premature ejaculation means ejaculating sooner than you or your partner want, with little sense of control. It is one of the most common male sexual concerns. It can be lifelong or develop later, often with anxiety, relationship issues or erectile dysfunction behind it. Behavioural techniques, counselling and on-demand medicines such as dapoxetine can help.
Dapoxetine for Premature Ejaculation Explained
Summary: Dapoxetine is a short-acting SSRI developed specifically for premature ejaculation. It briefly increases serotonin activity, which can delay ejaculation and improve control, and is taken a few hours before planned sex rather than daily. It does not treat erectile dysfunction or cause an erection. A doctor or pharmacist should confirm the dose and suitability.
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When to See a Doctor About Erectile Dysfunction
Summary: See a doctor about erectile difficulties if they persist beyond a few weeks, cause distress or relationship strain, or start suddenly. Also go if chest pain, breathlessness or signs of diabetes such as excessive thirst come with them. An occasional off night is normal, but persistent ED can be an early sign of heart disease, diabetes or hormone problems.
Modafinil 200: A Practical Guide to the Wakefulness Aid
Summary: Modafinil 200 is a 200mg tablet of modafinil, a wakefulness medicine. In the EU it is authorised only for excessive sleepiness caused by narcolepsy, following a 2010 EMA review. It is not a study or productivity aid and does not replace sleep. It makes hormonal contraception less reliable, so use extra contraception and only take it under medical supervision.
Pregabalin 300: Uses, Cautions and Why You Should Never Stop Abruptly
Summary: Pregabalin is a prescription medicine for nerve pain, some forms of epilepsy and generalised anxiety disorder, and 300 is a capsule strength. Common side effects include drowsiness, dizziness, blurred vision and weight gain, so take care driving and limit alcohol. It can cause dependence, and it must never be stopped abruptly: dose changes should be gradual and supervised.
Pain-O-Soma for Muscle Pain: Short-Term Relief, Used Carefully
Summary: Pain-O-Soma is carisoprodol, a muscle relaxant for short-term relief of acute muscle strains and spasms, usually alongside rest and physiotherapy. It acts on the nervous system rather than the muscle. Courses are short, usually no more than a couple of weeks, because dependence and tolerance can develop. It causes drowsiness, so avoid alcohol and driving.
Carisoprodol Safety: What to Know Before Taking a Muscle Relaxant
Summary: Carisoprodol's main risk is sedation: it causes drowsiness, slowed reactions and poor concentration, so don't drive until you know how it affects you. Combined with alcohol, opioids, sleeping tablets or some antihistamines it can slow breathing dangerously. It can also cause dependence, so use it only for short courses and give your doctor a full medicines list.
Doxycycline: Common Uses and Important Cautions
Summary: Doxycycline is a tetracycline antibiotic used for some chest, skin and sexually transmitted infections, and tick-borne infections. It also treats acne and rosacea and prevents malaria for travel. It makes skin burn more easily in sunlight, so cover up and use sunscreen. It is generally not used in pregnancy or young children. Finish the full course, as prescribed.