In my personal tests between the Thai governement Sidegra (100 mg) and the Indian Kamagra (100 mg), I have less side effects with Sidegra, but until you mentioned it, I hadn't thought about perhaps it was because of less potency than even the Indian version Kamagra. I thought the Kamagra may have other active ingredients that may have caused the side effects, but you may be correct that perhaps the Thai government Sidegra has less of the primary active ingredient.
Interesting...