Non-narcotic analgesics are all of the following drugs EXCEPT:

Correct Answer: C

Rationale: The correct answer is C: Butorphanol. Non-narcotic analgesics are medications that relieve pain without producing narcotic effects. Butorphanol is a narcotic analgesic, not a non-narcotic one. Paracetamol (A), Acetylsalicylic acid (B), and Ketorolac (D) are all non-narcotic analgesics commonly used for pain relief without causing narcotic effects. Therefore, the incorrect options are A, B, and D because they are non-narcotic analgesics, unlike Butorphanol.

Correct Answer: B

Rationale: The correct answer is B: Eleuterococci's extract. This plant origin drug is known for its adaptogenic properties, which help increase overall tone and resilience in the body. Eleuterococci, also known as Siberian ginseng, is used to combat stress and boost energy levels. Meridil (A) is a synthetic drug with unknown effects on tone. Pantocrin (C) is a hormone derived from animal glands, not a plant origin drug. Caffeine (D) is a stimulant that may increase alertness but does not have the same generalized tone-increasing properties as Eleuterococci's extract.

Correct Answer: D

Rationale: The correct answer is D: All of the above. Benzodiazepines, when used in combination with ethanol, morphine, or chlorpromazine, can lead to additive CNS depression due to their similar mechanisms of action. Ethanol enhances the sedative effects of benzodiazepines, morphine can increase the risk of respiratory depression when combined with benzodiazepines, and chlorpromazine can potentiate the sedative effects. Therefore, using benzodiazepines with any of these substances can result in increased CNS depression. The other choices (A, B, and C) are incorrect because each of these substances alone can potentiate CNS depression when combined with benzodiazepines, making choice D the most comprehensive and correct option.

Correct Answer: A

Rationale: The correct answer is A: Enflurane. Enflurane can lower the seizure threshold, making it risky for patients with a history of seizure disorders. Nitrous oxide (B), Sevoflurane (C), and Desflurane (D) are considered safer options and do not have as significant an effect on seizure threshold. Therefore, Enflurane should be avoided in patients with a history of seizure disorders to prevent potential complications.

Correct Answer: A

Rationale: Step-by-step rationale: - Misoprostol is a synthetic prostaglandin E1 analog used to prevent gastric ulcers, not an antacid. - Maalox, Mylanta, and Almagel are all antacids used to neutralize stomach acid. - Misoprostol increases gastric mucus production, inhibits acid secretion, and promotes healing of the stomach lining. - Therefore, the correct answer is A (Misoprostol) as it is not an antacid but rather a medication used to prevent ulcers.