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Which form of medication begins to lose it potency once dissolved?

A.

powder

B.

capsule

C.

liquid

D.

tablet

Answer and Explanation

The Correct Answer is A

A. powder: Many medications, particularly antibiotics and certain injectables, are manufactured as a stable powder (lyophilized or desiccated) to ensure a long shelf life. Once they are reconstituted (dissolved) with a diluent, the resulting liquid solution often has a short stability period (e.g., 7 to 28 days) and must be stored under specific conditions (refrigeration) to maintain potency before it expires.

B. capsule: Capsules are solid oral medications intended to maintain their potency until they are swallowed and dissolved by gastric acid in the stomach. They do not lose potency merely by being in their packaged form.

C. liquid: Medications already formulated as a stable liquid solution maintain their labeled potency until the manufacturer's expiration date, regardless of whether they were recently opened, unless they were improperly stored.

D. tablet: Tablets are solid, compressed medications that are highly stable and designed to retain full potency until their manufacturer-specified expiration date.


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Related Questions

Correct Answer is D

Explanation

A. Doing so ensures more accurate dosing: Prefilled Lovenox (enoxaparin) syringes are designed not to be purged. The medication is pre-measured, and removing any amount-even a tiny bit-will alter the dose. Therefore, accuracy is maintained by not expelling anything.

B. Doing so ensures needle patency:The needle is already patent (open). Purging is not required for this.

C. The cartridge won't work otherwise:The mechanics of the syringe work regardless of the air bubble.

D. The syringe may (and usually does) contain air:Lovenox prefilled syringes intentionally contain a small air bubble, and you should not purge it. The air bubble acts as an air-lock technique, ensuring the full dose is delivered and preventing medication leakage from the subcutaneous site, which reduces bruising.

Correct Answer is D

Explanation

Step 1: Convert the ordered dose to mg

  • Ordered dose = 0.05 g.
  • 1 g = 1000 mg.
  • 0.05 g = 50 mg.

Step 2: Compare with available tablet strength

  • Each tablet contains 50 mg.
  • Ordered dose = 50 mg.
  • Therefore, the patient needs 1 tablet.

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