Alternative medicines range from a broad spectrum of treatments and procedures which falling outside of the mainstream of traditional healthcare, to those which isare strictly based on the scientific method.

when you use "range" you need to specify the range: from a (the beginning of the range) to b (the end of the range)

This presentation will argue the appeal,for the safety as well as efficacy of alternative medicines.

Being popped up as the best option instead of the toxic chemical drugs these therapies have spread as a wealthy business pushed by practitioners and pharmaceutical companies.

Not clear what you are saying here. I don't know what you mean by "being popped up."

Homoeopathy, acupuncture, chiropractic, and herbal medicines are clearly supposed to be preferred by many patients, and alsos well as by a large fractionpercentage of physicians because people believe they are absolutely safe, aren't they?.

You are saying here that physicians prefer these medicines because people believe they are safe. That's why physicians prefer them? Don't you mean that people prefer them because physicians believe they are safe?

TAlthough the popular idea quoted is that natural is safe, well actually this, this idea that natural remedies are safe is not always the castrue, since herbal medications and drugs often share the very same active ingredient, which occasionally can even be poisoning - like --such as foxglove (digitalis purpurea) and deadly nightshade (belladonna) - particularly depend- which occasionally can result in poisoning onif the dosage, thatwhich is known inas the the pharmaceutical and variable in the herboristic (???) prescription., is too great? Your sentence is difficult to follow. I don't know if my correction accurately represents the original idea.

The scientific literature still presents a low amount of evidencere is still not much evidence in the scientific literature on the efficacy of these approaches because of the lack of scientific validation according to the evidence-based medicine best practice, for instance, most of the studies are affected by bias or anecdotal. evidence. (This sentence is circular: you are saying there is not much evidence because there is a lack of evidence. )

in the phrase "affected by bias or anecdotal" you are combining a noun, "bias" with and adjective "anecdotal".

However, we must admit that in the last 20 years a surge of interest in this field has been detectsurged.

Or, "there has been an increased interest in this field"

In conclusion, although alternative medicines are becoming more and more popular, there is, unfortunately, there is not enough evidence supporting what they are claimed to bthe claim that they are - safer and more efficient than traditional medicine.