2024年7月24日 · Phenylephrine works by directly stimulating receptors in the blood vessels of the nose and other parts of the body (called alpha-1 adrenergic receptors), causing vasoconstriction (narrowing of the blood vessels). This reduces nasal congestion by preventing fluid from draining from the blood vessels into the tissues lining the nasal passages.

In organic chemistry, the phenyl group, or phenyl ring, is a cyclic group of atoms with the formula C6H5, and is often represented by the symbol Ph (archaically φ) or Ø.

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Phenylephrine is used for the temporary relief of stuffy nose, sinus, and ear symptoms caused by the common cold, flu, allergies, or other breathing illnesses (such as sinusitis, bronchitis). This...

Phenyl group or phenyl ring or aryl group is an organic functional group with the chemical formula C6H5. Visit BYJU'S to understand the properties, structure and the uses of the phenyl group.

2023年9月29日 · Detailed Phenylephrine dosage information for adults and children. Includes dosages for Nasal Congestion, Hypotension and Shock; plus renal, liver and dialysis adjustments.

In organic chemistry, a cyclic group of atoms with the formula C6H5 is known as the phenyl group or the phenyl ring. Phenyl groups are closely related to benzene and can also be known as a benzene ring, except minus a hydrogen, which is substitutable by another element or compounds that can serve as a functional group.

Phenyl groups are everywhere in organic chemistry. Although represented with varied double and single bonds, phenyl groups are chemically aromatic and have equal bond lengths between carbon atoms in the ring. The phenyl formula is C6H5. Benzene and …

Phenylephrine is used for the temporary relief of stuffy nose, sinus, and ear symptoms caused by the common cold, flu, allergies, or other breathing illnesses (such as sinusitis, bronchitis)....

2025年3月4日 · Phenylephrine is a decongestant that shrinks blood vessels. Phenylephrine ophthalmic (for the eyes) is used to relieve eye redness, dryness, burning, and irritation caused by wind, sun, and other irritants.