chazk said:
your not alone i did a google and researched it very well. seems alot of people said the same as you it did nothing. But on the other hand you claimed it nothing but you used it for 3 years,so just maybe you would have lost hair faster or lot more of it with out nizoral.I'm using it anyways becuase its cheap combination with t-gel just becuase it better then nothing i suppose
the debate on wheather nizoral has any effect on hairloss has become warped over the years...it is a dandruff and seborrheic keratosis shampoo. it has shown effetiveness in increasing hair diameter and thickness so to speak in the individuals with thinning due to those two conditions..not everyone with dandruff and sebum problems have thinning hair..the ones with severe problems can have hairloss....ketoconazole(the active ingrediant in nizoral shampoo) is also used as an antifungal that has been shown to have some anti androgen activity when taken ORALLY as a pill..it is very hepatoxic and its antiandrogenic effects are systemic involving not just 5 alpha reductase, in general it is not .
the following is not my writing:
The major drawbacks of ketoconazole therapy are from the occasionally seen adverse reactions. It may induce anorexia, nausea and vomiting [462, 591]. Increase in transaminase levels and hepatoxicity may occur [1318, 2338]. Ketoconazole may decrease testosterone and cortisol levels, resulting in gynecomastia and oligospermia in men and menstrual irregularities in women [1643, 2213].
The effects of ketoconazole on functions of the thyroid gland have also been investigated. There have been a number of reports suggesting that ketoconazole may have antithyroid function via impairment of thyroglobin iodination and iodothyrosine coupling. In vitro, ketoconazole has been found to form a complex with iodine and inhibit lactoperoxidase. In vivo experiments in rats have shown that the weight of thyroid gland increases in rats treated with ketoconazole [461]. In another study designed to investigate the influence of ketoconazole on the basal and TSH-stimulated iodide uptake in the rat thyroid cells, concentration-based variations were observed. Ketoconazole appeared to increase the basal iodide uptake slightly at lower concentrations, while it sharply decreased the uptake below the basal levels at higher concentrations. Under TSH stimulation, the inhibitory effect of the drug were observed even at low concentrations [1207]. In contrast to these animal data, studies carried on in a limited number of euthyroid, healthy individuals, hypothyroid patients, and patients with thyrotoxicosis failed to provide any data suggesting a potential inhibitory effect of ketoconazole on thyroid functions [530, 531]. These data suggest that possible antithyroid effect of ketoconazole demands further investigation and close follow-up.
that is in oral administration