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The relationship between oxycodone and morphine is based on their relative potencies as opioids. Oxycodone is generally considered to be more potent than morphine when taken orally.

Specifically, when converting oxycodone to morphine dosages, it is commonly accepted that 1 mg of oxycodone is roughly equivalent to 1.5 mg of morphine. Consequently, when calculating the equivalency for oxycodone to morphine, 20 mg of oxycodone would convert to approximately 30 mg of morphine. Thus, this ratio clarifies that 20 mg of oxycodone is a suitable conversion that reflects the potency relationship between these two medications.

Recognizing this conversion is critical for managing pain effectively and safely when switching from one opioid to another, ensuring patients receive an appropriate dose that maintains analgesic efficacy while minimizing the risk of overdose or withdrawal symptoms.