A female client with mild depression reports to the nurse recently starting St. John’s wort. Which information provided by the client requires further instruction?
A Hard candy can be used for a dry mouth.
B Another form of contraception is not needed.
C Insomnia may occur while taking the medication.
D Sensitivity to the sun can develop.
The correct answer and Explanation is :
The correct answer is B: Another form of contraception is not needed.
St. John’s wort is an herbal remedy commonly used for mild to moderate depression, but it can interact with several medications, including oral contraceptives, and reduce their effectiveness. This happens because St. John’s wort induces enzymes in the liver (especially cytochrome P450 enzymes), speeding up the metabolism of certain medications, including hormonal contraceptives. As a result, the contraceptives may be broken down faster, reducing their ability to prevent pregnancy. Therefore, women taking oral contraceptives while also using St. John’s wort should be advised to use an additional form of contraception, such as condoms or other non-hormonal methods, to avoid an unintended pregnancy.
The other options are correct and do not require further instruction:
- A: Hard candy can be used for a dry mouth.
Dry mouth is a common side effect of St. John’s wort, similar to many other medications that affect neurotransmitters. Hard candy, especially sugar-free, can stimulate saliva production and help alleviate this discomfort. - C: Insomnia may occur while taking the medication.
St. John’s wort can cause insomnia or other sleep disturbances in some individuals. This is likely due to its influence on serotonin levels, which can affect sleep patterns. Clients experiencing insomnia should be advised to take the medication in the morning and practice good sleep hygiene. - D: Sensitivity to the sun can develop.
St. John’s wort can cause photosensitivity, increasing the risk of sunburn or skin reactions when exposed to sunlight. Clients should be advised to use sunscreen, wear protective clothing, and avoid prolonged sun exposure.
In summary, the use of St. John’s wort can compromise the effectiveness of hormonal contraceptives, and women should be educated on the need for additional contraception while taking this supplement.