The phrase "are frequently administered" is correct and usable in written English.
It can be used in contexts where you want to describe something that is given or applied often, such as medications or tests.
Example: "Vaccines are frequently administered to ensure public health and prevent outbreaks."
Alternatives: "are often given" or "are regularly provided".
A combination of nonopioid analgesics and opioids is most often used to achieve postoperative analgesia, and the opioids are frequently administered by nurse-administered injections.
Benzodiazepines, such as lorazepam and midazolam, are frequently administered to surgical intensive care unit (ICU) patients for postoperative sedation.
Consequently, analgesic and sedative medications are frequently administered to critically ill patients to treat PAD, to improve synchrony with mechanical ventilation, and to decrease the physiological stress response.
Dexamethasone and 5-fluorouracil (5-FU) are frequently administered together post-operatively, for their anti-fibroblastic and anti-inflammatory properties, respectively.
Of note, proton pump inhibitors affect intestinal iron intake and are frequently administered to ICU patients [32].
High inspiratory oxygen concentrations are frequently administered in ventilated patients in the intensive care unit (ICU) but may induce lung injury and systemic toxicity.
Inhalations were frequently administered, as were leeching, cupping, and bleeding.
Each time they received more X-rays, which were frequently administered by untrained dental employees.
Whether the β-1 agonist dobutamine, which is frequently administered to patients with heart failure, alters their chemoreflex sensitivity is not known.
The boost is frequently administered by use of brachytherapy or, occasionally, external-beam radiotherapy (EBRT) when brachytherapy does not provide sufficient coverage because of the size of the tumor or the geometry of the patient.
