D4 Thermal Shock, T7 Extreme, and WS1 Extreme are formulated to be safely taken together. You can do so by following the dosing instructions on the individual bottles or for simplified dosing here is an example;
Take your first daily serving in the morning with breakfast as follows; 1 D4 Thermal Shock capsule, 2 T7 Extreme capsules, and 2 WS1 Extreme capsules. Take your second daily serving with lunch or a snack as follows; 1 D4 Thermal Shock capsule, 1 T7 Extreme capsule, and 2 WS1 Extreme capsules.
Make sure you allow at least 6 hours between servings and drink plenty of water throughout the day to avoid dehydration.
T7 Extreme and WS1 Extreme are stimulant free products so the timing of consumption in relation to sleep should not matter. However, D4 Thermal Shock is a high stimulant product so if taken too late in the day it could cause problems with sleep.
This schedule can be followed for up to 4 weeks at a time. After completing your 8 week cycle discontinue use of all products for 4 weeks before starting a new cycle. This is a practice that should be followed with all supplements in order to prevent your body from building up a tolerance to active ingredients. Correctly following dosing and cycling instructions is critical for long term results and continued effectiveness of products.