Bylvay Dosage

Generic name: odevixibat 200ug
Dosage form: capsule, coated pellets
Drug class: Miscellaneous GI agents

Medically reviewed by Drugs.com. Last updated on Feb 12, 2024.

Recommended Dosage for Progressive Familial Intrahepatic Cholestasis (PFIC) in Patients Aged 3 Months and Older

The recommended dosage of BYLVAY is 40 mcg/kg taken orally once daily in the morning with a meal. Table 1 below shows the recommended once daily dosage by body weight.
If there is no improvement in pruritus after 3 months, the dosage may be increased in 40 mcg/kg increments up to 120 mcg/kg once daily not to exceed a daily dosage of 6 mg/day.
BYLVAY oral pellets are intended for use by patients weighing less than 19.5 kilograms.
BYLVAY capsules are intended for use by patients weighing 19.5 kilograms or above.

Table 1. Recommended Dosage for PFIC in Patients aged 3 months and older (40 mcg/kg/day)
Body Weight (kg)	Once Daily Dosage (mcg)
7.4 and below	200
7.5 to 12.4	400
12.5 to 17.4	600
17.5 to 25.4	800
25.5 to 35.4	1,200
35.5 to 45.4	1,600
45.5 to 55.4	2,000
55.5 and above	2,400

Recommended Dosage for Alagille Syndrome (ALGS) in Patients Aged 12 Months and Older

The recommended dosage of BYLVAY is 120 mcg/kg taken orally once daily in the morning with a meal. Table 2 below shows the recommended once daily dosage by body weight.
BYLVAY oral pellets are intended for use by patients weighing less than 19.5 kilograms.
BYLVAY capsules are intended for use by patients weighing 19.5 kilograms or above.

Table 2. Recommended Dosage for ALGS in Patients aged 12 months and older (120 mcg/kg/day)
Body Weight (kg)	Once Daily Dosage (mcg)
7.4 and below	600
7.5 to 12.4	1,200
12.5 to 17.4	1,800
17.5 to 25.4	2,400
25.5 to 35.4	3,600
35.5 to 45.4	4,800
45.5 to 55.4	6,000
55.5 and above	7,200

Dosage Modification for Management of Adverse Reactions

Tolerability for Alagille Syndrome (ALGS)

Dose reduction to 40 mcg/kg/day (Table 1) may be considered if tolerability issues occur in the absence of other causes. Once tolerability issues stabilize, increase to 120 mcg/kg/day.

Liver Test Abnormalities

Establish the baseline pattern of variability of liver tests prior to starting BYLVAY, so that potential signs of liver injury can be identified. Monitor liver tests (e.g., ALT [alanine aminotransferase], AST [aspartate aminotransferase], TB [total bilirubin], DB [direct bilirubin] and International Normalized Ratio [INR]) during treatment with BYLVAY. Interrupt BYLVAY if new onset liver test abnormalities occur or symptoms consistent with clinical hepatitis are observed [see Warnings and Precautions (5.1)].

Once the liver test abnormalities either return to baseline values or stabilize at a new baseline value, consider restarting BYLVAY at the recommended dosage [see Dosage and Administration (2.1, 2.2)]. Consider discontinuing BYLVAY permanently if liver test abnormalities recur.

Discontinue BYLVAY permanently if a patient experiences a hepatic decompensation event (e.g., variceal hemorrhage, ascites, hepatic encephalopathy).

Preparation and Administration Instructions

For patients taking bile acid binding resins, take BYLVAY at least 4 hours before or 4 hours after taking a bile acid binding resin [see Drug Interactions (7.1)].
Do not crush or chew capsules.
Oral Pellets:
- Mix the contents of the shell containing Oral Pellets into soft food or a liquid (as described below).
- Discard the emptied shells. Do not let your child swallow the unopened shells containing the Oral Pellets.
Administration Instructions for patients capable of swallowing soft food:
1. Administer BYLVAY with the first morning meal.
2. Place a small amount (up to 2 tablespoons [30 mL]) of soft food (apple sauce, oatmeal, banana or carrot puree, chocolate or rice pudding) in a bowl. Keep the soft food at, or cooler than, room temperature.
3. Open the shell containing Oral Pellets and empty the contents into the bowl of soft food. Gently tap the Oral Pellet shell to ensure that all contents have been dispersed.
4. If the dose requires more than one shell of Oral Pellets, repeat Step 3.
5. Gently mix until well dispersed and administer the entire dose immediately.
6. Follow the dose with breast milk, infant formula, or other age-appropriate liquid.
7. Do not store the mixture for future use.
8. For patients unable to swallow soft food, see the instructions below.
Administration Instructions with liquids (Using an oral dosing syringe):
1. Administer BYLVAY with the first morning meal.
2. Open the shell containing Oral Pellets and empty the contents into a small mixing cup. Gently tap the shell containing Oral Pellets to ensure that all contents have been emptied into the mixing cup.
3. If the dose requires more than one shell of Oral Pellets, repeat Step 2.
4. Add 1 teaspoon (5 mL) of an age-appropriate liquid (for example, breast milk, infant formula, or water).
5. Let the pellets sit in the liquid for approximately 5 minutes to allow complete wetting REMINDER: The Oral Pellets will not dissolve in the liquid.
6. After 5 minutes, place the tip of the oral syringe completely into the mixing cup. Pull the plunger of the syringe up slowly to withdraw the liquid/pellet mixture into the syringe. Gently push the plunger down again to expel the liquid/pellet mixture back into the mixing cup. Do this 2 to 3 times to ensure complete mixing of the pellets into the liquid.
7. Withdraw the entire contents into the oral syringe by pulling the plunger on the end of the syringe.
8. Place the tip of the syringe into the front of the patient's mouth between the tongue and the side of the mouth, and then gently push the plunger down to squirt the liquid/pellet mixture between your child's tongue and the side of the mouth. Do not squirt liquid/pellet mixture in the back of the child's throat because this could cause gagging or choking.
9. Do not administer via a bottle or "sippy cup" because the Oral Pellets will not pass through the opening. The oral pellets will not dissolve in liquid.
10. Follow the dose with breast milk, infant formula, or other age-appropriate liquid.
11. If any pellet/liquid mixture remains in the mixing cup, repeat Step 7 and Step 8 until the entire dose has been administered.
12. Check the child's mouth to make sure all of the liquid/pellet mixture has been swallowed.
Capsules:
Administration Instructions:
1. Take in the morning with a meal.
2. Swallow the capsule whole with a glass of water.
3. Alternatively, for patients unable to swallow the capsules whole, BYLVAY capsules may be opened, and sprinkled and mixed with a small amount of soft food, or mixed with an age-appropriate liquid. Follow directions above for oral pellets to prepare and administer such a mixture.