If you consume two 200 microgram tabs of LSD, the total amount of LSD ingested would indeed equal 400 µg. However, the subjective intensity of the experience might not scale linearly due to the following factors:
LSD has a non-linear dose-response curve, meaning the effects don't always double in intensity when the dose is doubled. For example:
Individual Sensitivity. The way your body and mind respond to LSD depends on: Tolerance, Set and Setting, Biological Variability.
If you're considering a higher dose like 400 µg, here are some tips to minimize risks:
Start Low: If it's your first time taking a higher dose, start with a single 200 µg tab to gauge your reaction.
Set and Setting: Choose a safe, comfortable environment with a trusted sitter who can assist if needed.
Stay Hydrated and Rested: Avoid alcohol or other substances, and ensure you’re in good physical health.
Know When to Seek Help: If you feel overwhelmed, grounding techniques (like deep breathing) or reassurance from a sober person can help. In extreme cases, a medical professional may need to intervene.