@Dave76
Hope you are giving key pen serum and digee serum separately.
Pl read this learning post by Sharat Sir
https://forum.litairian.com/discussion/370/how-many-times-in-a-day-frequency-to-place-a-request-to-vk-and-for-how-long#latest
For strength and stamina …. its PERFECT HEALTH SERUM……