Fildena CT 100 (or other sildenafil‑containing drugs) “can be used” by a man with obesity depends on a few health‑factors. But there is medical research that sheds light on how obesity and erectile dysfunction (ED) — and the use of drugs like sildenafil — interact. Below is a breakdown of what is known  What research says — sildenafil can “work” even in obesity One study showed that sildenafil improved erectile function even in men who were obese (BMI ≥ 30 kg/m²), as well as in overweight or normal‑weight men. The improvement in ED did not differ significantly between BMI groups. PubMed That suggests obesity by itself does not necessarily make sildenafil ineffective. So — from a strictly “does the drug act to improve erections?” perspective But Fildena CT 100 often comes with other risk factors — which affect safety and outcomes Obesity often goes along with other health issues that matter when using sildenafil: Obesity is strongly linked to ED: men with high body weight have higher risk of erectile dysfunction, often due to vascular, metabolic (insulin resistance, diabetes), hormonal, or cardiovascular changes. PMC +2 MDPI +2 Use of sildenafil (the active drug in Fildena CT 100) affects blood vessels and can lower or alter blood‑pressure. So in people with obesity — especially if there is high blood pressure, heart disease, diabetes, or other metabolic problems — there may be higher risk of side effects or complications. Drugs.com +2 NCBI +2 Some preclinical (animal) data suggest that in obesity, the metabolic effects of sildenafil may be less beneficial or potentially adverse (e.g. effects on glucose homeostasis, liver metabolism) when used long-term.