ED After A Weight Loss Diet; Increase Side Effects Of The Drug

After several years of using the drug vardenafil with excellent results and few side effects, I went on a diet losing 25 kilos and I realized that the side effects have changed in the use of the drug, that is, before they were simple redness of the face and a little digestive disorder; today they are light-headedness, almost dizziness and above all anxiety that I feel in the first 2-3 hours after taking the drug. How come this happens to me? I can’t understand: before to get the right effect I took 5 mg. and everything was fine. Now already with 2.5 mg. I feel a lot of these annoying new side effects: but how is it possible that after 8 years of use of the same active ingredient the side effects change? I weighed 250 lbs. and in weight loss up to 200 kg everything has remained the same; then gradually the side effects have increased. What would you suggest I should do?