Poirot,
what is the generic to Ferriprox? Maybe Kelfer? Is it still in use? and how much does it cost now? Do you still use it in India? does it have any considerable side effects? and if someone wants to order it from India how does one proceed?
Lots of questions - thanks in advance for your answers.
Lena
Lena,
Kelfer, Ferriprox, L1 are all the same drug - the generic name is Deferiprone.
Kelfer + Desferal is the chelation drug mix of choice in India - this is primarily because Kelfer is extremely effective in taking out iron from hearts (usually the main cause of mortality in thals) and Desferal is better at taking out iron from the liver. This combo therapy or just Kelfer are/is very much the dominant chelation therapy in India.
Our experience with Exjade or Asunra/Desirox has been more mixed in terms of price vs performance - not many haematologists want to go with Exjade as their first line of chelation treatment, especially in thals with already high Ferritin levels/compromised livers.
Cost of Kelfer = Rs350($7) per 50 capsules of 500 mg each. Standard dosage = 60-75mg/kg of body weight per day - so, you can calculate the dosage cost per day/per month. It is available via doctor's prescription only and has to be ordered directly from key distributors (ie not available at pharmacies) - but, generally a friendly Thal in India can buy the drug for you and mail it out to you. The strict monitoring of usage ceased a long time ago, as the drug has now been in use for over 20 years.
The main side effect of Kelfer reported by nearly 30% of Thals is joint pains - knees, and in severe cases, elbows and ankles. However, practice has again shown us that the best way to beat this is to increase dosage over a period of time (4-6 months). This allows the body to adjust to the drug, and usually even if there are joint pains at the starting, they disappear over time, even as dosage is increased. Other than this, different Thals have reported initial comments of nausea, stomach upsets and dizziness - but generally, these side effects disappear within a month.
A severe side effect, reported in about 2% of Thals, is neutropenia - depletion of WBCs. On starting Kelfer, one should monitor WBCs monthly for any change, and one can gradually reduce this monitoring over time. However, given that pre-transfusion CBC is done at most centres, this is automatically monitored. Kelfer should be stopped if WBCs fall below 3,000. Then, restart with a significantly lower dose, and see if the condition persists. Roughly, this condition persists in about 40-50% of those Thals who initially report neutropenia.
Hope this is useful.
Cheers
Poirot