Does any one have any sucess stories for the treatment; conventional or alternative of tachycardia.?

Supra-ventricular tachycardia
Does anyone know what the cause is?
Alternative treatments; nutrition, homeopathy, mineral deficiencies, meditation etc

Also known as SVTs, it describes a very rapid heart rate. It would be helpful to know the underlying rhythm (ie: atrial flutter, atrial tachycardia, etc...) If you find out, post this question again. It would be helpful to know a few other things about you, so I'll have to give a broad answer. The heart is unique tissue that beats when it receives electrical impulses (you may have seen actors who pose as "dead patients" on t.v. get "shocked" in the ER with electricity to help their hearts beat again). With SVTs, a part of your heart gets "excited" and starts to shoot off it's own electrical impulses, which can cause the heart to beat out of rhythm, and very fast. You should see a cardiologist and have a few tests such as a 12-Lead EKG, 2d echo, holter monitor, blood & thyroid tests, and possibly a stress test. Many young females get SVTs, which is usually harmless and do not cause any longterm problems. These cases can be treated with simple lifestyle modifications that can minimize attacks (such as sleeping better, reducing stress and eliminating caffeine products). Patients can do Valsalva manuevers to stop SVTs. As far as alternative, homeopathic, etc... there are no products that have shown evidence in successfully treating SVTs. If you ever find that your SVTs won't stop, you may get dizzy, get chest pain and your cardiac output will fall and you can pass out. Have someone dip your face/head in a bucket of ice-cold water (the mammalian diving reflex) and call 911. Medications, ablation, cardioversion, etc... are reserved for advanced cases. These patients may be older or have other cardiac issues going on. Or they can get SVTs before or after a heart attack due to changes that occurs in a part of the heart called the "Atrium". I hope I was able to answer some of your questions...

SVT can be treated through several modalities, the simplest of which is the vagal or valsalva maneuver, wherein a patient is asked to bear down as if having a bowel movement. This puts pressure on the vagus nerve and, under normal circumstances, slows the patient's heart rate by stimulating the parasympathetic nervous system. Another modality involves treatment with medications. Prehospital care providers and hospital clinicians might administer Adenosine, Cardizem, Toprol, or Verapamil. If none of the above works, or if the patient is extremely unstable, synchronized cardioversion may also be used.

Another form of treatment is Radiofrequency ablation, a surgical procedure that uses radiofrequency energy to destroy abnormal electrical pathways in heart tissue and has shown great promise eliminating SVT.