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Synalgos-DC Side Effects Center
Medically reviewed by Min Clinic Staff | Updated: January 2026
- Generic Name: aspirin, caffeine, and dihydrocodeine bitartrate capsules, usp
- Brand Name: Synalgos DC
Synalgos DC(Aspirin, Caffeine, and Dihydrocodeine Bitartrate Capsules, USP) side effects drug center
Synalgos-DC Side Effects Center
Synalgos-DC (aspirin, caffeine, and dihydrocodeine bitartrate) is a combination of an analgesic, a narcotic pain reliever, and caffeine, which increases the effects of aspirin, used to treat moderate to moderately severe pain. Common side effects of Synalgos-DC include:
- lightheadedness
- dizziness
- drowsiness
- sedation
- nausea
- vomiting
- constipation
- itching or rash
- other skin reactions
- shaking
- anxiety
- sleep problems (insomnia), or
- ringing in your ears
Tell your doctor if you have serious side effects effects of Synalgos-DC including:
- shallow breathing,
- slow heart rate,
- fast or pounding heart rate,
- muscle twitching;
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