Related Clues:

• Lysergic, for one
• Alkali counterpart
• Users drop it
• NaOH, familiarly
• The 'A' in DNA
• Strong cleansers
• Strong soap substances
• Wood ash product
• Drain opener
• Heartburn cause
• Base antagonist?
• Beyond sarcastic
• See 43 Across
• Soapmaking ingredient
• Caustic alkali