The following is taken from LegPros.com. We think they have explained the story very well.

Review Summary
Diosmin is a flavonoid found in some plant sources that is promoted as a high-quality active ingredient in vein improvement supplements. Women and men suffering from venous disorders, such as varicose veins and spider veins, may especially benefit from Diosmin-based products, according to some clinical studies that may have been conducted.

As with all hopeful, new ingredients, this natural flavonoid may be found in various forms in multiple products. Many companies appear to be trying to take advantage of the hype surrounding the ingredient. However, not all forms of Diosmin may be equally potent. We will examine this ingredient to determine what kinds of benefits it may offer.

Ingredient at a Glance
This ingredient is said to be derived either directly from various plant sources or from the flavonoid, Hesperidin, which may be found together with Diosmin in some capsule-based supplements. Sources suggest that this ingredient may have been used and/or studied in clinical settings since the late 1960s, although it may not have gained in popularity in the U.S. until much later.

Although there may be many claims associated with this natural ingredient, it appears to be most frequently linked to formulas advertised as capable of providing relief for venous diseases. These may include varicose veins, spider veins and other vascular disorders, many of which may affect the legs of women and men, as well as other parts of the body.

Ingredient in Focus
One of the purported reasons for developing varicose and spider veins may be that circulation and blood flow throughout the legs and body may be poor. The muscle contractions in the legs assist in pumping blood back towards the heart, but dilated blood veins may make it difficult to carry the blood efficiently from the legs, and blood may begin to pool at the legs.

Diosmin is thought to strengthen the neuromediators in the leg’s veins so that the veins are able to prevent blood from flowing back. Weak veins may become strong again, and the appearance of bluish spider veins may begin to diminish. Additionally, this active ingredient is considered useful for both preventing certain venous disorders and correcting them once they occur.

Lifestyle
While this ingredient may be exciting, not all forms are equal in today’s market, with some companies putting out watered-down versions. On the other hand, Diosmin 95®, a patented formula, is said to be one of the most potent forms available to date. It was once available only in Europe as a pharmaceutical drug, but may now be available in the U.S. without a prescription.

Women and men seeking relief from varicose or spider veins through capsule-based supplements may wish to ensure they are not getting cheated with less potent versions of the ingredient. Diosmin 95® is said to be backed by 30 years of research and numerous clinical studies, with thousands of success stories from women and men in clinical studies.

Positives
• May be backed by clinical studies
• May be associated with improved health

Negatives
• May not be as promising as Diosmin 95®, a patented form
• Some products based on Diosmin may contain inferior ingredients
• Money-back guarantees may not be available for all such products
• Testimonials may not be readily available for some products

Final Thoughts
Diosmin may have some value as a natural ingredient for relieving certain venous disorders, but select companies may market premium versions of this new, naturally derived ingredient. Some companies may produce budget formulas, while others may inflate the prices without justification; a select few may have just the right balance in their formulas.

Some women and men may be tempted to opt for surgery out of despair, but they may wish to consider a few things: surgery may be expensive, risky and may be time-consuming due to repeat visits. On the other hand, select formulas based on Diosmin 95® may be potent enough to take as a standalone supplement – and may be taken just once daily.

Online Resources
There are now a number of online resources when it comes to buying the supplement.  Just do an internet search for diosmin.

The last time we looked there were reviews for one product at Amazon.com and they were all negative.  We don’t know the level of ingredients in that product.

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