Page 1 of 198
IBCLC EXAM NEWEST 2025 ACTUAL EXAM TEST
BANK| COMPLETE 550 REAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+| IBCLC EXAM PREP 2025
(BRAND NEW!!)
What is the first question to consider when helping a
breastfeeding mother with a medication question?
A) What is the relative infant dose of the medication?
B) What is the protein binding of the medication?
C) What is the molecular weight of the medication?
D) Is the medication really necessary to take now?
.......ANSWER........D
Which drug property results in more transfer of the drug into the
mother's milk?
A) Molecular weight >800 Daltons
,Page 2 of 198
B) High protein binding
C) High lipid solubility
D) Low maternal plasma concentration .......ANSWER........C
When it comes to medications and breastfeeding, drugs with a
shorter half-life are preferred. How many half-lives until it is
generally considered that the drug is eliminated from the system?
A) 3
B) 5
C) 7
D) 9 .......ANSWER........B
If a woman is given 80 mg of a drug to treat a urinary tract
infection - and the drug has a half-life of 3 hours - how much will
be left in her system after 3 half-lives?
A) 40 mg
,Page 3 of 198
B) 20 mg
C) 10 mg
D) 5 mg .......ANSWER........C
What is considered a high enough molecular weight that the
medication will be too big to easily get into the breast milk
compartment?
A) 200 Daltons
B) 300 Daltons
C) 400 Daltons
D) More than 800 Daltons .......ANSWER........D
Drugs can be highly bound to albumin, a large protein in the
blood circulation, and therefore too big to get into the breast
milk space. What percentage of protein binding is considered
high and therefore preferred?
A) 40%
, Page 4 of 198
B) 60%
C) 80%
D) >90% .......ANSWER........D
While most drugs are compatible with breastfeeding, a few are
not. Which type of drug is usually contraindicated for
breastfeeding?
A) Antibiotic
B) Antidepressant
C) Chemotherapy
D) Diabetic therapy .......ANSWER........C
A Relative Infant Dose (RID) of _____ indicates compatibility with
breastfeeding.
A) <10%
B) >10% .......ANSWER........A) <10%
IBCLC EXAM NEWEST 2025 ACTUAL EXAM TEST
BANK| COMPLETE 550 REAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+| IBCLC EXAM PREP 2025
(BRAND NEW!!)
What is the first question to consider when helping a
breastfeeding mother with a medication question?
A) What is the relative infant dose of the medication?
B) What is the protein binding of the medication?
C) What is the molecular weight of the medication?
D) Is the medication really necessary to take now?
.......ANSWER........D
Which drug property results in more transfer of the drug into the
mother's milk?
A) Molecular weight >800 Daltons
,Page 2 of 198
B) High protein binding
C) High lipid solubility
D) Low maternal plasma concentration .......ANSWER........C
When it comes to medications and breastfeeding, drugs with a
shorter half-life are preferred. How many half-lives until it is
generally considered that the drug is eliminated from the system?
A) 3
B) 5
C) 7
D) 9 .......ANSWER........B
If a woman is given 80 mg of a drug to treat a urinary tract
infection - and the drug has a half-life of 3 hours - how much will
be left in her system after 3 half-lives?
A) 40 mg
,Page 3 of 198
B) 20 mg
C) 10 mg
D) 5 mg .......ANSWER........C
What is considered a high enough molecular weight that the
medication will be too big to easily get into the breast milk
compartment?
A) 200 Daltons
B) 300 Daltons
C) 400 Daltons
D) More than 800 Daltons .......ANSWER........D
Drugs can be highly bound to albumin, a large protein in the
blood circulation, and therefore too big to get into the breast
milk space. What percentage of protein binding is considered
high and therefore preferred?
A) 40%
, Page 4 of 198
B) 60%
C) 80%
D) >90% .......ANSWER........D
While most drugs are compatible with breastfeeding, a few are
not. Which type of drug is usually contraindicated for
breastfeeding?
A) Antibiotic
B) Antidepressant
C) Chemotherapy
D) Diabetic therapy .......ANSWER........C
A Relative Infant Dose (RID) of _____ indicates compatibility with
breastfeeding.
A) <10%
B) >10% .......ANSWER........A) <10%
