A nurse is caring for a client who is taking oral erythromycin. Which of the following statements by the nurse indicates the client is experiencing a common adverse effect of this medication?

A. Tinnitus, or ringing in the ears, is a common adverse effect of aminoglycosides such as gentamycin which cause ototoxicity, rather than erythromycin which is a macrolide.
B. Constipation with abdominal cramping, is not a commonly reported side effect of erythromycin; this medication is more likely to cause diarrhea rather than constipation.
C. Common adverse effects of oral erythromycin include gastrointestinal symptoms such as abdominal cramping and nausea. Therefore, the statement indicating the client is experiencing a common adverse effect would be having a small amount of yellow emesis which aligns with the reported side effects of nausea and vomiting.
D. Swollen lips are not a common adverse effect of erythromycin. This symptom may indicate an allergic reaction or another issue unrelated to the medication.

A. It is generally advised to use additional forms of contraception or abstain from sexual activity for the first 7 days of the initial cycle.
B. If a pill is missed, the client should follow the specific instructions provided by the healthcare provider or the information leaflet, which typically involves taking the missed pill as soon as remembered and then continuing with the next dose at the regular time. Missed pills should be taken as soon as remembered, even if it means taking two pills in one day, and additional contraceptive measures may be necessary.
C. Increasing the dosage of an estrogen-progestin combination contraceptive for breakthrough bleeding is not a standard recommendation as this could lead to an increased risk of side effects. Breakthrough bleeding may occur, especially during the first few cycles of use, but it typically resolves on its own without the need for dosage adjustment.
D. There's no specific requirement to take combination contraceptives on an empty stomach. They can be taken with or without food, according to individual preference, but should be taken consistently at the same time each day to maximize effectiveness.