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Do antihistamines affect breast milk supply?

Antihistamines and Breast Milk Supply: What You Need to Know
As many new mothers navigate the challenges of breastfeeding, the question of medication safety often arises, particularly concerning antihistamines. These common drugs, used primarily to alleviate allergy symptoms, have raised concerns about their potential impact on breast milk supply.
Understanding Antihistamines
Antihistamines are categorized into two main types: first-generation and second-generation. First-generation antihistamines, such as diphenhydramine (Benadryl), are known for their sedative effects, while second-generation antihistamines, like cetirizine (Zyrtec) and loratadine (Claritin), are less sedating and generally considered safer for breastfeeding mothers.
Impact on Milk Supply
The relationship between antihistamines and breast milk supply is complex and not fully understood. While some studies suggest that first-generation antihistamines may lead to decreased milk production, the evidence remains inconclusive. For instance, a lack of systematic studies specifically assessing the effects of these medications on breastfeeding women means that definitive conclusions are hard to come by.
However, anecdotal evidence and expert opinions indicate that certain antihistamines can indeed affect milk supply. For example, registered nurse and International Board Certified Lactation Consultant (IBCLC) Angie Mann Natero notes that many medications, including some antihistamines, have the potential to negatively impact milk production, especially with long-term use.
Breast Milk Transfer and Safety
When it comes to the transfer of antihistamines into breast milk, research indicates that only minimal amounts of these drugs are secreted. A study highlighted that while first-generation antihistamines are present in breast milk, the concentrations are typically low enough that they are not expected to cause significant harm to breastfeeding infants .
However, caution is advised. For instance, larger doses or prolonged use of certain antihistamines, particularly when combined with other medications like pseudoephedrine, may lead to drowsiness in infants or a decrease in milk supply.
Recommendations for Nursing Mothers
For nursing mothers considering antihistamines, it is crucial to consult healthcare providers. While some antihistamines may be acceptable in small, occasional doses, others could pose risks to milk supply and infant well-being. Experts recommend monitoring any changes in milk production and infant behavior when starting a new medication.
In summary, while antihistamines can be used during breastfeeding, their potential effects on milk supply warrant careful consideration. Mothers should weigh the benefits of allergy relief against the possible risks to their breastfeeding journey, always seeking professional guidance to ensure the best outcomes for both themselves and their babies.

What decreases milk supply?

Other things that can also lead you to have low milk production include:

  • Smoking or drinking.
  • Some medicines and herbs.
  • Hormonal forms of birth control. This is especially true for birth control that has estrogen.
  • Nursing or pumping less often.
  • Getting sick.
  • Feeling stressed.
  • Getting pregnant again.

Will claritin decrease my milk supply?

Is It Safe to Take Claritin While Breastfeeding? While regular Claritin is completely fine, taking Claritin-D while breastfeeding may reduce milk supply. Claritin-D contains both loratadine, an antihistamine, and pseudoephedrine sulfate, a nasal decongestant,2 which may reduce milk supply, says Silverman.

Why is Zyrtec not recommended for breastfeeding?

However, caution is advised for cetirizine use while breastfeeding due to the theoretical risk of CNS depression based on limited human data and risk of decreased milk production.

What causes a drastic drop in milk supply?

A decrease in milk supply can be caused by a variety of different factors. A very common (and solvable) problem is not pumping or feeding enough. Because milk production works on a supply and demand basis, not pumping on a frequent schedule will signal to your body that it does not need to produce milk.

What dries up milk supply fast?

To help dry up your milk supply: Drink one mug of sage or peppermint tea 3 or 4 times per day, for 2 to 3 days. Pseudoephedrine (Sudafed) can help dry up your milk, but ask your doctor before using this medicine, and do not take it if you have kidney or thyroid problems, or if you have glaucoma.

What medication dries up milk supply?

Women sometimes to ask for a tablet to stop their milk supply. This medication works best if it is taken within 12- 24 hours of your baby’s birth. The medication is not routinely prescribed in hospital due to the many side effects and health risks with this medication. The medication is called cabergoline (Dostinex®).

What causes breast milk to dry up?

Possible causes of low supply
Nearly all babies need to feed at least 8 to 12 times in 24 hours. Your baby does not feed effectively at the breast. You have started using formula milk as well as breastfeeding. You have had breast surgery that is affecting your milk supply.

What is the safest antihistamine while breastfeeding?

Cold and allergy meds that are safe while breastfeeding include: Cetirizine (Zyrtec) and loratadine (Claritin) are the recommended antihistamines when breastfeeding. Other antihistamines are also considered safe but do not have as much research to support this. These include Allegra and Xyzal.

Do antihistamines dry up your milk supply?

One mother reported a reduction in milk production after taking 10mg of loratadine. There have been no studies looking at other antihistamines, lower doses, or what effect any changes in prolactin might have on milk production.

What medications cause low milk supply?

For example, antihistamines like Benadryl, Zyrtec, Allegra, etc, or decongestants like Sudafed, can decrease your milk supply. So please call us if you are breastfeeding and need clarification on the safety of a medication or to see if a medication you are taking may be affecting your milk supply while breastfeeding.

Natasha Lunn

Tash is an IBCLC and Business Coach helping fellow IBCLCs create fun, profitable businesses that are more than just an expensive hobby. Before becoming an IBCLC and starting her private practice - The Boobala, Tash graduated as an Osteopath in 2008 and has been in Private Practice in South West Sydney. She was also a volunteer Breastfeeding Counsellor and Community Educator with the Australian Breastfeeding Association for 6 years. Through her business, Your Lactation Biz, Tash coaches and creates products to help new and seasoned IBCLCs build businesses that suit their personality and lifestyle.

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