Approved Drug Label (PDF)
5
Warnings and Precautions
5.2 Potential for Drug Interactions with Strong
or Moderate CYP3A4 Inhibitors
Section
title revised
Additions
and/or revisions underlined:
Concomitant
administration with strong CYP3A4 inhibitors (such as ritonavir,
indinavir, cobicistat, ketoconazole) or moderate CYP3A4 inhibitors (such
as erythromycin) increases plasma concentrations of vardenafil.
…
7
Drug Interactions
7.2 Effect of Other
Drugs on Vardenafil
Additions
and/or revisions underlined:
…
Strong CYP3A4 inhibitors
…
Ritonavir
(600 mg b.i.d.) co-administered with LEVITRA 5 mg resulted in a 49-fold
increase in vardenafil AUC and a 13- fold increase in vardenafil Cmax. The
interaction is a consequence of blocking hepatic metabolism of vardenafil by
ritonavir, a HIV protease inhibitor and a highly strong CYP3A4
inhibitor, which also inhibits CYP2C9. Ritonavir significantly prolonged the
half-life of vardenafil to 26 hours. Consequently, it is recommended not to
exceed a single 2.5 mg LEVITRA dose in a 72-hour period when used in
combination with ritonavir. [See Dosage
and Administration (2.4) and Warnings and Precautions (5.2)].
Cobicistat
with LEVITRA can result in increased plasma concentrations, therefore it is
recommended that a single 2.5 mg dose of LEVITRA should not be exceeded in a
72-hour period. [See Dosage and
Administration (2.4) and Warnings and Precautions (5).]
…
7.3 Effects of
Vardenafil on Other Drugs
Additions
and/or revisions underlined:
…
In vitro data suggest that
vardenafil has the potential to inhibit P-glycoprotein (P-gp) at therapeutic
doses. While concomitant use of LEVITRA did not significantly increase plasma
concentrations of digoxin, a P-gp substrate, the effect on plasma
concentrations of P-gp substrates that are more sensitive than digoxin (e.g.
dabigatran) is not known.
8
Use in Specific Populations
8.1 Pregnancy
Additions and/or revisions underlined:
Risk Summary
LEVITRA is not indicated for use in females.
There are no data with the use of LEVITRA in
pregnant women to inform any drug-associated risks. In animal reproduction
studies conducted in pregnant rats and rabbits, no adverse developmental
outcomes were observed with oral administration of vardenafil during
organogenesis at exposures for unbound vardenafil and its major metabolite at
approximately 100 and 29 times, respectively, the maximum recommended human
dose (MRHD) of 20 mg based on AUC(see
Data).
Data
Animal Data
…
8.2 Lactation
Section title revised
Additions and/or revisions underlined:
Risk Summary
LEVITRA is not indicated for use in females.
There is no
information on the presence of vardenafil and its major metabolite in human
milk, the effects on the breastfed infant, or the effects on milk production.
Vardenafil is present in rat milk of lactating rats (see Data).
Data
Vardenafil was secreted into the milk of
lactating rats at concentrations approximately 10-fold greater than found in
the plasma. Following a single oral dose of 3 mg/kg, 3.3% of the administered
dose was excreted into the milk within 24 hours.
17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)
PATIENT
INFORMATION
Additions
and/or revisions underlined:
…
CAN
OTHER MEDICATIONS AFFECT LEVITRA?
Tell your doctor
about all the medicines you take including prescription and
non-prescription medicines, vitamins, and herbal supplements. LEVITRA and other
medicines may affect each other. Always check with your doctor before starting
or stopping any medicines. Especially tell your doctor if you take any of the
following:
Medicines
called nitrates (see “What important information should you know about
LEVITRA?”).
Ketoconazole
or itraconazole (such as Nizoral® or Sporanox®).
Ritonavir
(Norvir®) or indinavir sulfate (Crixivan®) saquinavir (Fortavase® or Invirase®)
or atazanavir (Reyataz®) or cobicistat.
...
GENERAL
INFORMATION ABOUT LEVITRA
Medicines
are sometimes prescribed for conditions other than those described in patient information
leaflets. Do not use LEVITRA for a condition for which it was not prescribed.
Do not give LEVITRA to other people, even if they have the same symptoms that
you have. It may harm them.
This
leaflet summarizes the most important information about LEVITRA. If you would
like more information, talk with your healthcare provider. You can ask your
doctor or pharmacist for information about LEVITRA that is written for health
professionals.
For
more information you can also visit www.LEVITRA.com, or call 1-888-825-5249.
…
Approved Drug Label (PDF)
5
Warnings and Precautions
5.4 Effects on the Eye
Addition
of the following:
… greater than or equal to 50 …
An observational case-crossover study
evaluated the risk of NAION when PDE5 inhibitor use, as a class, occurred
immediately before NAION onset (within 5 half-lives), compared to PDE5
inhibitor use in a prior time period. The results suggest an approximate 2-fold
increase in the risk of NAION, with a risk estimate of 2.15 (95% CI 1.06,
4.34). A similar study reported a consistent result, with a risk estimate of
2.27 (95% CI 0.99, 5.20). Other risk factors for NAION, such as the presence of
“crowded” optic disc, may have contributed to the occurrence of NAION in these
studies.
Neither the rare postmarketing reports,
nor the association of PDE5 inhibitor use and NAION in the observational
studies, substantiate a causal relationship between PDE5 inhibitor use and
NAION.
17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)
PATIENT INFOMATION
Additions and/or revisions underlined:
WHAT ARE THE POSSIBLE SIDE EFFECTS OF LEVITRA?
LEVITRA may uncommonly cause:
… In rare instances, men taking PDE5
inhibitors (oral erectile dysfunction medicines, including vardenafil) reported
a sudden decrease or loss of vision in one or both eyes. It is uncertain
whether PDE5 inhibitors directly cause the vision loss. If you experience
sudden decrease or loss of vision …