Indicate the non-narcotic analgesic,which lacks an anti-inflammatory effect:

Correct Answer: B

Rationale: The correct answer is B: Paracetamol. Paracetamol is a non-narcotic analgesic that lacks anti-inflammatory effects. It works primarily by inhibiting the production of prostaglandins in the brain, which helps to reduce pain and fever. Naloxone (A) is an opioid antagonist used to reverse the effects of opioids. Metamizole (C) and Aspirin (D) are both non-narcotic analgesics but have anti-inflammatory effects unlike Paracetamol.

Correct Answer: A

Rationale: Step-by-step rationale for the correct answer (A): Sydnocarb is a stimulant drug known to decrease fatigue, enhance professional work performance, and combat drowsiness. This aligns with the statement in choice A. The drug does not induce feelings of prosperity, relaxation, or euphoria (choice B), as it is not a psychoactive substance. Sydnocarb does not cause an influx of physical and mental forces or excitation of locomotive and speech (choice C), as it primarily targets fatigue and alertness. Additionally, Sydnocarb does not exhibit peripheral sympathomimetic action (choice D), which involves mimicking the effects of the sympathetic nervous system on peripheral organs.

Correct Answer: D

Rationale: The correct answer is D because tolerance involves multiple mechanisms. A is correct because tolerance can involve compensating for the drug effect. B is correct because chronic use can lead to increased drug disposition. C is correct because tolerance can result from changes in receptors, enzymes, or membrane actions. Therefore, all of the above (A, B, and C) are associated with tolerance, making option D the correct answer. Each option individually addresses a different aspect of tolerance mechanisms, making them incorrect as standalone choices.

Correct Answer: A

Rationale: Step 1: Identify benzodiazepine derivatives - Midazolam is a benzodiazepine derivative used as an intravenous anesthetic. Step 2: Eliminate other options - Thiopental is a barbiturate, Ketamine is a dissociative anesthetic, and Propofol is a sedative-hypnotic. Step 3: Verify knowledge - Benzodiazepines like Midazolam act on GABA receptors, producing sedative and anxiolytic effects. Step 4: Confirm choice - Midazolam's pharmacological profile aligns with a benzodiazepine derivative used for anesthesia. Summary: Midazolam (A) is the correct answer as it is a benzodiazepine derivative, while the other choices (B, C, D) represent different classes of intravenous anesthetics.

Correct Answer: A

Rationale: The correct answer is A: Papaverine. Papaverine is a smooth muscle relaxant, hence it decreases gastrointestinal motility. Metoclopramide, Domperidone, and Cisapride are prokinetic agents that stimulate gastrointestinal motility. Papaverine stands out as the exception due to its muscle-relaxing properties.