Common side e昀昀ects of iron supplements include (select all that apply):

Correct Answer: A

Rationale: Iron supplements are known to commonly cause gastrointestinal side effects, such as constipation, upset stomach, and nausea. Constipation is a common side effect of iron supplements due to the way iron can harden the stool and slow down bowel movements. Upset stomach and nausea can occur because iron supplements can irritate the stomach lining, leading to discomfort and feelings of queasiness. It is important for individuals taking iron supplements to be aware of these potential side effects and to speak with their healthcare provider if they are experiencing severe or persistent symptoms.

Correct Answer: B

Rationale: The Drug Enforcement Administration (DEA) is the agency responsible for enforcing the control of drugs considered to have a potential for abuse in the United States. It is the primary federal agency involved in combating drug trafficking and the illegal distribution of controlled substances. The DEA works to regulate and enforce the Controlled Substances Act, which classifies drugs into different schedules based on their accepted medical use and potential for abuse and addiction. This agency plays a crucial role in preventing the diversion and misuse of controlled substances, as well as ensuring public safety and health.

Correct Answer: C

Rationale: A solution is a liquid preparation that contains one or more chemical substances dissolved in a suitable solvent. The solute (chemical substance) is evenly dispersed and mixed with the solvent, resulting in a homogenous mixture. Solutions are commonly used in medicine for oral administration, injections, topical treatments, and various other applications due to their ability to provide accurate dosing and rapid absorption into the body. decoction is a liquid derived from boiling plant material, fluid extract is a concentrated liquid extract of a substance, spirits are alcoholic solutions, and syrup is a viscous solution containing sugar.

Correct Answer: D

Rationale: Kallidin is a peptide, specifically a kinin, and is not classified as an eicosanoid. Eicosanoids are a group of lipid mediators derived from arachidonic acid or other fatty acids, including prostaglandins, prostacyclin, thromboxane, and leukotrienes. Although kallidin also plays a role in inflammation and vasodilation like some eicosanoids, it is not part of the eicosanoid family.

Correct Answer: B

Rationale: Combination chemotherapy is used to target cancer cells at different stages of the cell cycle and through multiple mechanisms of action. Alkylating agents, antimetabolites, and antitumor antibiotics each work differently: alkylating agents damage DNA, antimetabolites interfere with DNA synthesis, and antitumor antibiotics inhibit RNA synthesis. By combining these drugs, the treatment can kill more cancer cells and reduce the likelihood of resistance. This approach maximizes tumor cell killing while minimizing the risk of relapse. Dose-limiting toxicities still exist, but the combination strategy allows for lower doses of each drug, reducing individual side effects.