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Popular comparisons
When comparing two medicines is worth it
At the counter the comparison is almost never academic: it comes out of a concrete situation. These four are the usual ones.
The patient asks "which one is better?"
There is rarely an absolute "better". What there is are different profiles that fit this patient more or less well: their age, their underlying conditions, the rest of their medication and what they have already tried. The comparison exists to put those differences in terms the person can understand and decide on.
The usual one is out of stock
Before suggesting anything it is worth separating two things that get confused a lot: a pharmaceutical equivalent (same active substance, same dose and form) can be substituted under the dispensing rules; a therapeutic alternative (a different active substance in the same class) is a change of treatment and belongs to the prescriber.
Two prescribers, overlapping treatments
Common in patients who see several specialists: two drugs from the same class, or two presentations of the same active substance under different names. Here the comparison catches duplications, which are among the most frequent and most fixable medication problems. It is worth cross-checking with the interaction checker.
Price and reimbursement
A price difference between presentations may come from different strengths, a different number of units or different reimbursement conditions. Comparing the whole course — what the full treatment costs, not the pack — avoids recommendations that turn out expensive.
What to look at in the comparison
- Active substance and dose. First, because it decides whether this is a substitution or a change of treatment.
- Licensed indication. Two drugs in the same class do not always carry the same approved indications.
- Contraindications and cautions. This is where apparently interchangeable drugs differ most, especially in renal or hepatic impairment, pregnancy and old age.
- Adverse effect profile. It determines real adherence: a patient stops because of what they feel, not because of what the trial says.
- Formulation and regimen. Once a day versus three times changes compliance more than almost any other variable. And not every form can be split or blistered into a compliance aid.
- Interactions. Especially relevant if the patient already takes several medicines.
The comparison is guidance and professional support: any change of treatment is the prescriber's decision. The Summary of Product Characteristics is the reference that prevails.
Frequently asked questions
Paracetamol or ibuprofen?
Paracetamol: fever, pain without inflammation, pregnancy, gastric problems. Ibuprofen: pain with an inflammatory component (sprains, period pain, low back pain, dental pain). They can be alternated every 3 h.
Loratadine or cetirizine?
Loratadine: mild allergic rhinitis, no sedation. Cetirizine: urticaria, more potency (drowsiness in 10-15%). A barely sedating alternative is bilastine.
Omeprazole or pantoprazole?
Omeprazole: first line on experience and cost. Pantoprazole: if the patient takes clopidogrel, immunosuppressants or drugs sensitive to CYP2C19. Equivalent in reflux disease.
Finasteride or dutasteride for hair loss?
Finasteride: first choice for androgenetic alopecia (1 mg, Propecia) and standard BPH. Dutasteride: high-volume BPH or finasteride failure. Never if the partner could be pregnant.
Can I compare any pair of medicines?
Yes. If the pair is not in the curated dataset, the AI generates the comparison with the same structure (indications, dose, pregnancy, advantages, which to choose). Guidance only.