Mixing DPH and Lithium

Mixing DPH and Lithium calls for caution — TripSit rates this combination “Caution.” Low risk never means safe.

There is a concern of serotonin syndrome at higher dosages of this combination. Caution is recommended in restricting diphenhydramine to medical dosages (25-50mg). Lithium and diphenhydramine both have concerns of QT prolongation which may be increased when taken in combination; risks increase due to a variety of factors such as the health of the user and drug dosages. Additionally, the combination may increase each drug's side effects, such as dizziness and loss of consciousness.

DPH (also known as Benadryl) and Lithium.

What to do

• Even for lower-risk pairs, the safest choice is not to mix — and never to use alone.
• Start with much less than usual and go slow — you can always take more, never less.
• Never use alone. If you do, call 1-800-484-3731 (Never Use Alone) so someone can send help if you stop responding.

Open the interactive combination checker

Related combinations

• Mixing Opioids and DPH
• Mixing Benzodiazepines and DPH
• Mixing Alcohol and DPH
• Mixing Cocaine and DPH
• Mixing Amphetamines and DPH
• Mixing Ketamine and DPH
• Mixing GHB / GBL and DPH
• Mixing Tramadol and DPH

This is educational information, not medical advice. "Low risk" never means "safe", and the potency of an unregulated supply is unknown.