Another good thing about Minoxidil is that it has a high percentage of effectiveness. I have been using Rogaine for about four years and I really noticed a difference even before the first 4 months were up. Some side-effects are more common than others. Read honest and unbiased product reviews from our users. It works for about 2 out of 3 men. You also get the most out of the Men’s Rogaine Hair Regrowth Treatment if aged under 40. Find user ratings and reviews for Rogaine topical on WebMD including side effects and drug interactions, medication effectiveness, ease of use and satisfaction Review . Like all forms of medication, Minoxidil has potential for side-effects. Rogaine For Men Review Side-Effects: The Good, The Bad And The Ugly. - Jlai, Female I love the results I have seen from using this product, I have to admit was skeptical but it really works - nats10, Male Much like the treatment itself, which doesn’t affect everyone in the same way, Rogaine’s side-effects vary from one man to the next. Find helpful customer reviews and review ratings for Men's Rogaine 5% Minoxidil Foam for Hair Loss and Hair Regrowth, Topical Treatment for Thinning Hair, 3-Month Supply,2.11 Ounce (Pack of 3) at Amazon.com. Men's Rogaine Foam contains 5% minoxidil (the same active ingredient in the Rogaine topical solution), an FDA approved product for treating hair loss and works by enlarging the hair follicle to reverse the shrinking that occurs over time with hereditary hair loss. For men, it is suggested that you take the 5% Minoxidil, while there is a recommended 2% Minoxidil for women.