|
|
calcitriol (cal SIT ree ol)
|
|
|
|
|
|
Rocaltrol
|
|
0.25 mcg
|
0.5 mcg
|
|
|
|
|
This drug is not available in a generic form.
|
|
|
What is calcitriol?
Calcitriol is a derivative of vitamin D. This vitamin is
necessary and important for the proper absorption and use of
calcium in the body. Calcium, of course, is the major
mineral in bones and teeth, and gives them their strength.
As individuals, especially females, age and when steroid
medication such as prednisone are used, the bones actually
lose calcium and osteoporosis occurs. When bones are
weakened like this, they are prone to fracture with serious
consequences.
|
|
|
|
|
|
What is it used for?
In gastroenterology, the drug is used along with oral
calcium to prevent bone loss, which can occur with steroid
(prednisone) use and with certain liver conditions such as
primary biliary cirrhosis and primary sclerosing
cholangitis. It is also used to treat low blood calcium seen
in chronic kidney dialysis patients, in parathyroid hormone
problems and in a condition called psoriasis vulgaris.
|
|
|
|
|
|
How do I take it?
Follow your physician's instructions carefully.
Calcitriol may be taken with food, milk or on an empty
stomach. Swallow whole, do not crush or chew the pill. Store
in a tightly sealed container away from light and heat. Keep
all medications away from children. Never share your
medications with anyone else.
|
|
|
|
|
|
What do I do for a missed dose?
If you miss a dose of this medicine, take it as soon as
possible. If it is almost time for your next dose, skip the
missed dose and return to your regular schedule. Do not
double up on this medication.
|
|
|
|
|
|
Are there interactions with food or beverages?
There are no known interactions with food or beverages.
Your calcium levels should be monitored while on this drug.
It is usually desirable to increase your daily intake of
calcium with dairy products or to take a calcium supplement.
Check with your physician.
|
|
|
|
|
|
Are there interactions with other drugs?
An interaction generally means that one drug may increase
or decrease the effect of another drug. Also, the more
medications a person takes, the more likely there will be a
drug interaction.
Interactions with this drug may occur with the following:
- mineral oil
- magnesium containing antacids
- digoxin (Lanoxin)
- verapamil (Calan)
- cholestyramine (Questran)
- phenytoin (Dilantin)
- thiazide diuretics (Dyazide,
hydrochlorothiazide)
- barbiturates (phenobarbital)
|
|
|
|
|
|
Is there a problem if I have another disorder or
disease?
At times, a drug may have a different or enhanced effect
when other diseases are present. At other times, the drug
may worsen or effect another disease. Patients with chronic
kidney disease may have significant fluctuation of their
blood calcium levels. Close contact with the physician and
regular blood studies are necessary.
|
|
|
|
|
|
What about allergies?
People who have known allergies or asthma may be at an
increased risk for a reaction from any new medication. The
physician should always know a patient's allergy history.
Signs of an allergic reaction are skin rash, hives or
itching. Of course, a person should not take calcitriol if
there has been a previous reaction to this or vitamin D.
|
|
|
|
|
|
What if I'm pregnant, considering pregnancy or
breast-feeding?
Most females now know that, if possible, no drug,
including alcohol, should be taken during pregnancy or
lactation. The potential danger, of course, is an injury to
the baby. However, some drugs are much safer than others in
this regard. So, the FDA has a grading system for each drug
which reflects what is known medically. It ranks drugs from
A, where medical studies show no evidence for danger to the
fetus or mother, to B, C, D and X, where the medical
evidence indicates that the risk to the fetus outweighs any
benefit to the mother. Calcitriol is ranked C. Always
consult your physician before taking any drug during or when
planning pregnancy.
|
|
|
|
|
|
What are the effects on sexual function?
With long-term use of calcitriol, there can be a decrease
in sex drive.
|
|
|
|
|
|
Are there other precautions?
Take the exact dose of the drug that has been prescribed.
Taking extra doses may raise the calcium blood level into a
toxic range.
|
|
|
|
|
|
How long is it safe to take calcitriol?
Long-term use of this drug is necessary and safe,
provided periodic physician supervision and dosage
adjustments occur.
|
|
|
|
|
|
How about side effects?
Adverse reactions can occur with any drug, even
over-the-counter medications. Some of these are mild such as
a stomach upset, which may be avoided by taking the
medication with food. Minor reactions may go away on their
own but if they persist, contact the physician. For major
reactions, the patient should contact the physician
immediately. This drug has no side effects if taken at the
proper dosage.
For calcitriol, the following are the effects of an
overdose:
Minor:
- persistent headache
- fatigue
- weakness
- dry mouth
- metallic taste
- thirst
- nausea
- vomiting
- diarrhea
|
|
|
|
|
|
A physician's comment...
As the population gets older, more and more people are
confronted with the problem of bone loss. It is now
well-known that osteoporosis can be prevented or delayed by
not smoking, by regular exercise and avoiding excessive
alcohol. A hip fracture in an elderly individual is really a
disaster as up to 50% of these people will die within one
year. So, prevention is the key. The above lifestyle changes
and adequate amounts of oral calcium and vitamin D are
necessary. When cortisone (steroids, prednisone) is used for
a medical condition, the need is even greater.
|
Posted: July 1998
|