Why not eat a good diet instead of herbal supplements...i don't know which brand u are talking about and what are the ingredients.  Try eating good amount of protien and carbohydrates which will help you gain weight. 

Dear Practo user I am not against any of the supplements.you should make sure a whey based protein powder is not causing infection on your sinus glands before using it. I would recommend you to consult a dietitian and get yourself assessed and understand the root cause of the sinus infection and nasal polyp .if it is treated using the diet take a modification of diet from the consulted person or if it is a medical condition get treatment from my ENT doctor. For personalized assessment you can connect me through my Practo page are you can visit my Instagram profile. https://instagram.com/rm.nutrition4all Regards Remya

Definitely HERBALIFE nutrition is too good.... I am also suggested to my patients. But it works on good guidence... Because which products need for u it's depends on various uspects.... Any other guidance contact with me

Better to not take  letter on it has its side effects like kidney stones,gall stone etc. Take balance diet regular exercise for 30 min for better absorption of nutrients.

Kindly contact me on Practo online consultation. As I need to know your food habits and your exercise schedule.